, National Fire Protection Association NFP Electrical...

NFPNational Fire Protection AssociationElectrical Engineering, 1 Batteryarch Park , Quincy, MA 02169-7471Phone: 617-770-3000. Fax: 617-984-7070. wwwnfpa.org

National Electrical CodeCI Committee

TO: Members of Code-Making Panel

MEMORANDUM

/dfFROM: Jean O'Connor

SUBJECT: Letter Ballot on Panel Actions on Comments for the 2008 NationalElectrical Code

DATE: #006In accordance with the NFPA Regulations Governing Committee Projects , the PanelActions on Comments for the 2008 National Electrical Code are hereby submitted toyou for letter ballot.

Enclosed is a copy of all the actions for your Panel's Comments with the Panel Actionsand Panel Statements (where required) on the Comments as agreed upon by a majorityof the voting members in attendance at the recent meeting of your Panel in RedondoBeach , CA.

Also enclosed is a ballot form. For nonvoting members , the ballot is enclosed forinformation only. The letter ballot contains a summary of the Comment number , lognumber, NEC section , and Panel Action. Please keep in mind that your vote on thisletter ballot is based on concurrence or otherwise with the Panel Action taken bythe Panel at the meeting, and not on the Comment itself.

If you are voting affirmatively on all Panel Actions , you may return only the firstpage of the ballot. Therefore , if you concur with all of the Panel Actions , you mayindicate concurrence by checking the first box at the top of the ballot. You would thensign and date the first page and return it to NFPA.

If you do not concur with all of the Panel Actions and wish to vote "affirmativewith comment"

, "

negative" or indicate "abstaining" on certain Comments, pleasecheck the second box at the top of the ballot and place an "X" in the appropriatecolumn(s) adjacent to the Panel Action. Please return only those ballot pages which

you have marked with an "X" along with the corresponding reasons for such "affirmativecomment"

, "

negative" and "abstaining" votes.

Affirmative comments and reasons for negatives/abstentions must accompany theballot pages. We ask that your reasons be listed on a separate sheet of paper, not onthe ballot sheets. When listing affirmative comments and negative/abstention reasonsplease identify the person voting (your name), the Comment number , and the actionyou are taking (affirmative comment , negative or abstaining) along with your commentor reason.

A completed copy of the ballot, including any reasons and attachments , must bereceived by the NFPA Electrical Department as soon as possible but no later than5:00 m. EST on January 9, 2007. You may fax your ballot to Jean O'Connor at(617) 984-7070. Either mail it or fax it, please do not do both.

Following receipt of ballots by NFPA , all reasons for negative and abstaining votes willbe mailed to all members of your Panel by January 18 , 2007.

NOTE: Please remember that the return of ballots and attendance at CommitteeMeetings is required in accordance with the Regulations Governing CommitteeProjects.

COMMENT BALLOT DUE BY: Tuesday, January 9 , 2007

NFPA 70 NEC-P12National Electrical Code

Staff Liaison: Mark W. Earley

Retnrn Completed Ballot To: Jean O' Connor . Fax to (617) 984-7070 Committee Action Key:

A = AcceptR= RejectAP A = Accept in Part

APR = Accept in PrincipleAPP = Accept in Principle in PartH = Hold

With respect to the Committee Actions on the Comments which accompaniedthe ballot, please record me as voting: (check one):

Affirmative On All Items. I agree with all committee meeting actions without comment.Please return this Ballot Page to NFP A.

Affrmative With Exception(s): I agree with all committee meeting actions Exceptfor the Affrmative with comment, Negative and lor Abstention checked below.*Reasons must accompany these votes.

Date: Signed:

Name:

Type or Print black ink

VoteComment Committee Affrm with

COllment No Log No Section on Prop# Action Comment* Negative Abstain

12- 610 620 630 640 645 650 , and 12-

J 2- 529 610.14(A) 12-

12- Table 610.14(D) 12-

12- 1852 610. 12- APR

12- 1246 610. 12-

12- 2095 620.11(A) Exception (New) 12-

12- 402 Table 620.14 12-

J 2- 1305 620.15

12- 620.21 Exception 12-

12- 2094 620.21 (A)(2)(d) Exception (New) 12-


Comment No Log No. Section on Prop# Action Comment* Negative Abstain

12- 620.21(A)(3)(e) 12-

12- 551 620.21(A)(4) 12-

12- 1718 620.37(D) 12-

12- 552 620.44 12-

12- 620.51(A) 12-

12- 620.51(A) 12-

12- 553 620.51(A) 12- APR

12- 1854 620.51(A) 12- APR

12- 2093 620.51(A) Exception No. 12- APR

12- 554 620. 51 (A) Exception 12- APR

12- 2092 620.51(C) 12-

12- 1326 620.51(C)(1) 12- APR

12- 555 620. 12- APR

12- 556 620. 12- APR

12- 1856 620. 12- APR

12- 557 620. 12- APR

12- 1858 620.55 12- APR

12- 954 620. 12-

12- 1349 620. 12-

12- 1401 620. 12-

12- 2086 620. 12-

12- 2195 620. 12-

12- 2345 620. 12-

12- 620. , FPN 12-

12- 620. , FPN 12-

12- 533 625. 12-

12- 626 (New) 12-

12- 279 626 (New) 12-

12- 883 626 (New) 12-

12- 1327 626 (New) 12-

12- 1420 626 (New) 12- APR

12- 1726 626 (New) 12- APR


COlllnlCnt No LOI!No. Section on Prop# Action Comment* Nel!ative Abstain

12- 1984 626 (New) 12-

12- 2025 626 (New) 12- APR

12-45 1728 626.2 12-

12- 2307 626.3 12- APR

12- 1735 626.1 0 and 626.12 12-

12-48 2344 626.20. 12- APP

12- 2350 626.20. 12- APR

12- 2356 626.28 12- APR

12- 2259 626.28(D) 12- APR

12- 2261 626.28(D) 12- APR

12- 1723 626.30(4)(a) and Figure 626.30(c) 12- APR

) 2- 2260 626.30(A)(2) 12- APR

12- 1727 626.30(F) 12- APR

12- 2331 626.40(E) 12- APR

12- 2336 626.42 , 626.42(B) 12- APR

12- 544 640.3 12-

12- 1432 640.3 12-

12- 1611 640. 12-

12- 240 640.3(A) and 640.6(C) 12- 101 APR

12- 1433 640.3(A) and 640.6(C) 12- APR

12- 1605 640.3(A) and 640.6(C) 12- APR

12- 640. 12-

12- 276 640. 12- APR

12- 485 640. 12-

12- 545 640. 12- APR

12- 680 640. 12-

12- 681 640. 12-

12- 888 640. 12- APR

12- 2168 640. 12- APR

12- 864 640. , FPN 12-

12- 1860 640.6(D)(I) 12- APP

12- 1248 640.7(A) 12-


COIJ1mcnt No Log No. Section on Prop# Action Comment* Negative Abstain

12- 2169 645.2 12- 104

12- 645.4(6) 12- 108

12- 1316 645.4(6) (New) 12- 108

12-77a 2506 645.4(6) Exception 12- 108

12- 1986 645.4(6) Exception 12- 108 APA

12- 277 645.5 12- 116 APR

12- 546 645. 12- 116 APR

12- 865 645.5(C)(6) 12- 109

12- 688 645.5(D) (New) 12- 114

J 2- 789 645 . 5(D)(5)( d) 12- 114 APR

12- 1985 645.5(D)(5)d. 12- 103 APR

12- 645.5(F) 12- 116

12- 1863 645. 5(F) 12- 116 APP

12- 790 645.1 0(1) 12- 120

J 2- 1948 647.7(A)(4) 12- 127

12- 532 660. 12- 132

12- 531 665.12 12- 137

12- 1249 665.26 12-

12- 526 668.3(C)(3) 12- 141

12- 473 668.15 12- 142

12- 497 668.30(D) 12- 144

Report on Comments - June 2007 NFP A 70

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12- Log #73 NEC-P12(610, 620 630 640, 645 650 , and 665)

Final Action: Accept

Submitter: Technical Correlating Committee on National Electrical CodeCIComment on Proposal No: 12-Recommendation: The Technical Correlating Committee directs that the Panel clarify the Panel Action on this Proposalby inserting the specific Sections or Parts of Article 250 that apply as required by 4. 1 of the NEC Style Manual. Thisaction will be considered by the Panel as a Public Comment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptRevise 620.82 and 680. 10 read as follows:620.82 Electric Elevators. For electric elevators , the frames of all motors , elevator machines, controllers, and the metal

enclosures for all electrical equipment in or on the car or in the hoistway shall be bonded in accordance with Article 250,Parts V and VII.

620.83 Nonelectric Elevators. For elevators other than electric having any electric conductors attached to the car, themetal frame of the car, where normally accessible to persons, shall be bonded in accordance with Article 250, Parts Vand VII.Panel Statement: The panel accepts the TCC direction and has added the required parts in 620.82 and 620.83.

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12- Log #529 NEC-P12(610. 14(A))

Final Action: Reject

Submitter: Dan Leaf, Seneca , SC

Comment on Proposal No: 12-Recommendation: Accept the proposal as revised:Add: Neutral conductors that comply with 310. 15(8)(4)(a) shall not be required to be counted in determining allowable

ampacities.Substantiation: 310. 15(8)(4)(a) permits the neutral not to be counted as current-carrying. Tables 310. 15(8)(2)(a),310. 16, and 310. 18 headings use the phrase "current-carrying" which exempt neutrals that comply with 31 0. 15(8)(4)(a).Panel Meeting Action: Reject

Panel Statement: Existing footnotes to Table 61 0. 14(A) meet the concerns of the submitter.



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12- Log #74 NEC-P12(Table 610. 14(0))


Submitter: Technical Correlating Committee on National Electrical Code(BComment on Proposal No: 12-Recommendation: The Technical Correlating Committee directs the panel to reconsider this proposal and clarify if theirrevisions are to the recommendation or the existing code text. This action wil be considered by the panel as a publiccomment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptChange the title ofTable 610. 14 (D) in the 2005 NEC to "Minimum Contact Conductor Size Based on Distance

Between SupportsAdd the word " Minimum" in front of the column title "Size of Wire (AWG)"

Panel Statement: The panel accepts the TCC direction and clarifies the meeting action to apply to the 2005 NEC textand not the text of Proposal 12-



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12- Log #1852 NEC-P12(610. 31)

Final Action: Accept in Principle

Submitter: Michael Walls , American Chemistry CouncilComment on Proposal No: 12-Recommendation: Revise text to read as follows:The provision for locking or adding a lock to the disconnecting means shall be installed on or at the switch or circuit

breaker used as the disconnecting means and shall remain in place with or without the lock installed. PVlldJIt: 111\:ClII fu,

ClJJi,, CI IvLo" tv II I\: ilLoII VI Loi, Louil!;, \:CI "\:I 1'Cl llllvl!;\: jJ\:lIlIill\:J.Substantiation: The last sentence that was added by the panel "Portable means for adding a lock to the switch orcircuit breaker shall not be permitted. " Will prohibit the use of portable devices that provide for the attachment of multiplelocks (i.e. Scissors) to the locking mechanism. The sentence should be removed.

Panel Meeting Action: Accept in PrincipleRevise the sentence that reads "Portable means for adding a lock to the switch or circuit breaker shall not be

permitted." of committee action on Proposal 12-9 to read as follows:Portable means for addinq a lock to the switch or circuit breaker shall not be permitted as the means required to be

installed at and remain with the eauipment."

Panel Statement: An attachment device (i.e. , scissors or multiple lock hasp) that provides a means to attach multiplelocks to the locking device on the disconnect is not prohibited. Instead of inserting one lock in the locking device , themultiple lock hasp is inserted and multiple locks can be used. The intention of prohibiting portable means for adding alock is so that a provision for locking or adding a lock to the disconnect is permanent.



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12- Log #1246 NEC-P12(610.61)


Submitter: Neil F. LaBrake, Jr. , Syracuse , NY

Comment on Proposal No: 12-Recommendation: Revise the Panel's action on 610.61 as follows:

610.61 Grounding. All exposed non-current-carrying metal parts of cranes , monorail hoists , hoists , and accessories

including pendant controls , shall be bonded to each other and to an equipment grounding conductor either bymechanical connections or bonding jumpers, where applicable so that the entire crane or hoist is a ground fault currentpath as required or permitted by Article 250, Parts V and VII.

Moving parts , other than removable accessories, or attachments that have metaHo-metal bearing surfaces , shall be

considered to be electrically bonded to each other through bearing surfaces for grounding purposes. The trolley frameand bridge frame shall not be considered as electrically grounded through the bridge and trolley wheels and itsrespective tracks. A separate bonding conductor jumper shall be provided.Substantiation: The addition of "to each other and to an equipment grounding conductor" in 610.61 clarifies what

needs to be bonded and to where, which is the equipment grounding conductor. See the Panel action on Proposal 5-and on the definition of the term "equipment grounding conductor" in Proposal 5-6. The change of the term "bonding

conductor" to "bonding jumper" in the second paragraph in 610.61 is consistent with the NEC TCC Task Group on

Grounding and Bonding s original initiative that "bonding jumper" as defined in Article 100 is the proper use of the term.

This Comment was developed by a Task Group assigned by the NEC Technical Correlating Committee to addressactions that were other than "accept" taken by Code-Making Panels on proposals from the TCC to resolve 2005 NEC

Proposal 5-1 and Comment 5-1. Members of the Task Group on Grounding and Bonding for this Comment included: C.Douglas White; Michael Johnston; Jeffrey Boksiner; Daleep Mohla; Phil Simmons; Christopher Hutchings; JamesCarroll; Alan Rebeck; Richard Loyd; Paul Dobrowsky; and Neil F. LaBrake , Jr.

Panel Meeting Action: Reject

Panel Statement: The original panel action in the ROP took into account the NEC TCC task group recommendation aspresented in ROP Proposal 12-1 as it applied to cranes and hoists. While the intended results are the same , the

changes proposed in the comment fail to regard some of the special physical constraints such as requiring the use of animpractically long jumper versus grounding conductor-collector systems required in some equipment systems.


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12. Log #2095 NEC-P12(620. 11 (A) Exception (New)


Submitter: Kevin L. Brinkman , AEMA, Dave BalmerComment on Proposal No: 12-Recommendation: The proposal has been reworded below to clarify the intent. Please consider approval as modified.

620. 11 (A) Hoistway Door Interlock Wiring. The conductors to the hoistway door interlocks from the hoistway riser shallbe flame retardant and suitable for a temperature of not less than 200 C (392 F). Conductors shall be Type SF or

equivalent.Exception: Where Firefiahters' Emeraencv Operation is not reauired. the conductors to hoistwav door interlocks shall

complv with 620. 11 (C).Substantiation: The Panel Statement indicates that the purpose of this rule is to protect firefighters who are using theequipment during firefighters operations. The intent of this proposal was to defer to requirement 620. 11 (C) for

equipment that does not have firefighters operation because it is not intended for use during fires (such as privateresidence elevators , platforms lifts, etc.Panel Meeting Action: Reject

Panel Statement: Whether the elevator is used by firefighters or not , protection should be provided to prevent the

elevator from running with the doors open due to melted insulation on the hoistway door interlock wiring.


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12- Log #402 NEC-P12(Table 620. 14)


Submitter: Daniel Leaf , Seneca, SCComment on Proposal No: 12-Recommendation: Accept in Part. Where Table 620. 14 is used no other demand factors shall be oermitted.Substantiation: 220.61 (B)(2) allows a demand factor for certain feeders that may supply elevator rooms. Proposalwould clarify that both demand factors cannot be used.Panel Meeting Action: Reject

Panel Statement: The submitter has not provided any additional substantiation for the change.



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12- Log #1305 NEC-P12(620. 15)


ubmitter: David Sroka , Turner Falls , MAComment on Proposal No: 1-Recommendation: Add a sentence as follows:

The short-circuit current rating shall be included on the nameplate for elevator controllers.Substantiation: This data is hard to obtain after the original installation. It is important information. The nameplate isthe best place for the controller s short-circuit current rating. Integral component's rating can mistakenly be taken as thecontroller s rating. Lastly, it is safest to read the nameplate to get this information rather than physical removal ofcovers , moving wires , etc. The function of an elevator controller is so critical that the rating merits inclusion on thenameplate.Panel Meeting Action: Reject

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12- Log #75 NEC-P12(620.21 Exception)


Submitter: Technical Correlating Committee on National Electrical Code(IComment on Proposal No: 12-Recommendation: The Technical Correlating Committee directs that the Panel clarify the Panel Action on thisProposal regarding the exact location of the Exception.The Technical Correlating Committee understands that the last phrase in the first sentence should read "the pump

shall be permitted to be cord connected.This action wil be considered by the Panel as a Public Comment.

Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptFollowing 620.21 (A)(1)(d), add the following text:(e) A sump pump or oil recovery pump located in the pit shall be permitted to be cord connected. The cord shall be a

hard usage oil resistant type, of a length not to exceed 1.8 m (6 ft), and shall be located to be protected from physicaldamage.Panel Statement: The panel accepts the direction of the TCC and has clarified the panel action and furthermorerewrites the exception into positive Code language.


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12-10 Log #2094 NEC-P12(620.21 (A)(2)(d) Exception (New) )


Submitter: Kevin L. Brinkman , AEMA, Dave BalmerComment on Proposal No: 12-Recommendation: The proposal has been reworded to reflect this change. Please consider approval as modified:

620.21 (A)(2)(d) Add Exception as follows:Exception: Flexible metal conduit. liouidtioht flexible metal conduit. or liouidtioht flexible nonmetallic conduit shall be

permitted, in lenoths not to exceed 3.. 6 m (12 ft) without beino installed in a racewav and where the conduit is located tobe protected from phvsical damaoe and is clamped every 1.8 m (6 ft) and where the conductors are of the flameretardant tvpe..Substantiation: In certain applications , such as wiring from a car top box to switches mounted on the car frame, it isvery difficult to run hard conduit due to the close conditions and the need to "weave" in and around the car frame.Allowing longer lengths of flex conduit, while adding a requirement for clamping of the conduit every 6 ft , should provideequivalent safety to the current requirements.Panel Meeting Action: Reject

Panel Statement: Flexible metal conduit, liquidtight flexible metal conduit , or liquidtight flexible nonmetallic conduitare raceways and would not be installed in another raceway.No technical substantiation has been provided for modifying the support distance required in 348. , 350.30, and

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12-11 Log #76 NEC-P12(620.21 (A)(3)(e))


Submitter: Technical Correlating Committee on National Electrical CodeCIComment on Proposal No: 12-Recommendation: The Technical Correlating Committee directs that the Panel clarify the Panel Action on thisProposal since the proposal text is unclear as to how the final sentence is incorporated into the preceding text. Thisaction will be considered by the Panel as a Public Comment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptRevise the recommendation of Proposal 12-31 to read as follows:(e) Flexible cords and cables in lengths not to exceed 1.8 m (6 ft) that are of a flame-retardant type and located to be

protected from physical damage shall be permitted in these rooms and spaces without being installed in a raceway.They shall be part of:(1) Listed equipment,(2) A driving machine , or(3) A driving machine brake.

Panel Statement: The panel accepts the direction of the TCC and has clarified 620.21 (A)(3)(e).


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12-12 Log #551 NEC-P12(620.21 (A)(4))


Submitter: Andy Juhasz , Kone, Inc. / Rep. National Elevator Industry Inc. (NEil)Comment on Proposal No: 12-Recommendation: Remove the (d) shown in the very beginning of the text in the original proposal. It was incorrectlyincluded. The proposal should read as follows:(4) Counterweight. FIt:"iL.It: Illddl WII , li4u iJLiy l,L flt:" iL.It: II .dCl I WIIJu , li4u iJLiyliL flt:"iL.It: IIVllllldCl lli" "vll iL VI

flt:"iL.It: ,-VI J" ClIIJ '-ClL.It:", VI '-VII Judvl" Y" VUf.t:J Lvydllt:1 ClII J LClf.t:J VI ,-VI J",J U IdL Cli t: f.ClI L v f li"It:J t:4U ;f.IIIt:IIL , CI

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flClIlIt:-n::LClI JClII L Ly f.t:.The followinq wirinq methods shall be permitted on the counterweiqht assemblv in lenqths not to exceed 1.8 m (6 ft:(a) flexible metal conduit(b) liquidtiqht flexible metal conduit(c) liquidtiqht flexible nonmetallic conduit(d) flexible cords and cables. or conductors qrouped toqether and taped or corded. shall be permitted to be installed

without a raceway. Thev shall be located to be protected from phvsical damaqe and shall be of aflame-retardant typeand shall be part of:

(1) listed equipment(2) a drivinq machine. or(3) a drivinq machine brake

Substantiation: The Technical Correlating Committee was misled in their understanding as the original submittal wasin error when it indicated 620.21 (A)(4)(d) in the text of the revision. The subject of the revision is 620.21 (A)(4).

Panel Meeting Action: Accept


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12-13 Log #1718 NEC-P12(620.37(D))


Submitter: Thomas P. Hammerberg, Automatic Fire Alarm AssociationComment on Proposal No: 12-Recommendation: Add new language to 620.27 as follows:620.37(O) Interface with Fire Alarm Svstem. Wirinq connectinq the fire alarm recall outputs to the Elevator Control

Svstem shall be kept within the elevator machine room. the elevator control room. or the elevator control space.Substantiation: This new language has been proposed by the Technical Correlating Committee of the National FireAlarm Code. This proposal is consistent with NFPA 70's goal' s "for the practical safeguarding of persons and propertyfrom hazards arising from the use of electricity." It is hoped that the Task Group appointed by the NEC-TCC Chair willbe able to reach a compromise on language that will meet the needs of those jurisdictions who only have adopted theNEC and not NFPA 72 to protect persons and property from hazards arising from the use of electricity.Panel Meeting Action: Reject

Panel Statement: The submitter has provided no new substantiation for Proposal 12-47.



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12-14 Log #552 NEC-P12(620.44)


Submitter: Andy Juhasz , Kone , Inc. / Rep. National Elevator Industry Inc. (NEil)Comment on Proposal No: 12-48, 12-Recommendation: Recommend Panel reconsider Proposals 12-48 and 12-49.

Proposed change:620.44 Installation of Traveling Cables. Traveling cables that are suitablv supported and protected from phvsical

damaqe shall be permitted to be run without the use of a raceway in either or both of the followinq:(a) when used inside the hoistwav. on the elevator car. hoistwav wall. counterweiqht. or controllers and machinerv that

are located inside the hoistwav provided the cables are in the oriqinal sheath(b) from inside the hoistwav. to elevator controller enclosures and to elevator car and machine room, control room.

machinerv space. and control space connections that are located outside the hoistwav for a distance not exceeding 1.m (6 ft) in length as measured from the first point of support on the elevator car or hoistway wall , or counterweight whereapplicable , provided the conductors are grouped together and taped or corded , or in the original sheath. ThesefFraveling cables shall be permitted to be continued to this equipment d"vCl lvl '-VII I. vll"" "," UI" ClIIJ lv d"Vdlvl '-ClI

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Substantiation: NFPA 70 permits elevator travel cables that are properly supported to be used as fixed wiring in thehoistway without the use of junction boxes. There is no technical rationale to require these same cables that are locatedwithin the hoistway to be in raceways when lengths exceed 1.8 m (6 ft) when they are properly supported and protectedfrom the risk of damage. Fully sheathed elevator travel cables are robust and designed to survive in an elevatorhoistway for great lengths , as much as 250 meters, in unsupported conditions. Cables are designed for little strain onthe copper conductors by use of a steel support member typically used as a center member in a round cable and asintegral support members in flat construction and must meet the requirements of NFPA 70. Fully sheathed travel cablesthat are attached to cars , counterweights , and other hoistway machinery and suitably protected from physical damagehave no more risk of damage than cables provided in raceways in these locations.

I have submitted examples with this comment on applications in accordance with the proposed change and note thetravel cables are not exposed to any new hazards in the hoistway or on the car.

The supporting material are two examples that would permit application of elevator traveling cables in their originalsheath in lengths greater than the current 6 ft limitation of NFPA 70, 620.44 in the hoistway and on the car. Elevatortraveling cables are designed to be hung at great lengths within the hoistway, and when secured and protected fromphysical damage the use of raceways within the hoistway are not necessary.

Note: Supporting material is available for review at NFPA Headquarters.Panel Meeting Action: Accept



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12-15 Log #77 NEC-P12(620.51 (A))


Submitter: Technical Correlating Committee on National Electrical Code(I,Comment on Proposal No: 12-Recommendation: The Technical Correlating Committee directs that the Panel clarify the Panel Action on this Proposalsince the sentence requiring the disconnecting means to be listed is in two different locations in the accepted text inProposals 12-51 and 12-52. This action wil be considered by the Panel as a Public Comment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptPanel Statement: The panel accepts the direction of the TCC. See panel action and statement on Comment 12-17.


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12-16 Log #78 NEC-P12(620.51 (A))


Submitter: Technical Correlating Committee on National Electrical Code(B,Comment on Proposal No: 12-Recommendation: The Technical Correlating Committee directs that the Panel clarify the Panel Action on this Proposalsince the sentence requiring the disconnecting means to be listed is in two different locations in the accepted text inProposals 12-51 and 12-52. This action will be considered by the Panel as a Public Comment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptPanel Statement: The panel accepts the direction of the TCC. See panel action and statement on Comment 12- 17.



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12-17 Log #553 NEC-P12(620.51 (A))


Submitter: Andy Juhasz , Kone , Inc. / Rep. National Elevator Industry Inc. (NEil)Comment on Proposal No: 12-Recommendation: Revise the text shown in the ROP under the Panel Action as follows:The provision for lockinq or addinq a lock to the disconnectinq means shall be installed on or at the switch or circuit

breaker used as the disconnectinq means and shall remain in place with or without the lock installed. Portable means foraddinq a lock to the switch or circuit breaker shall not be permitted. other than means to add multiple locks such as amultiple lock hasp.Substantiation: While Mr. White has a valid concern and comment , it should be made clear that portable means, other

than those legitimately needed , are not to be permitted.Panel Meeting Action: Accept in PrincipleRevise the sentence that reads

, "

Portable means for adding a lock to the switch or circuit breaker shall not bepermitted" of committee action on Proposal 12-51 to read as follows:

Portable means for addinq a lock to the switch or circuit breaker shall not be permitted as the means required to beinstalled at and remain with the equipment."The text of the committee action on Proposal 12-51 as modified here is to be located before the sentence "The

disconnecting means shall be a listed device.

Panel Statement: See panel statement on Comment 12-


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12-18 Log #1854 NEC-P12(620.51 (A))



breaker used as the disconnecting means and shall remain in place with or without the lock installed. Pv, ldult: "'t:d" fu,

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Substantiation: The last sentence that was added by the panel "Portable means for adding a lock to the switch orcircuit breaker shall not be permitted." Will prohibit the use of portable devices that provide for the attachment of multiplelocks (Le. Scissors) to the locking mechanism. The sentence should be removed.

Panel Meeting Action: Accept in PrincipleRevise the sentence that reads

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Portable means for addinq a lock to the switch or circuit breaker shall not be oermitted as the means required to beinstalled at and remain with the equioment"The text of the committee action on Proposal 12-51 as modified have is to be located before the sentence "Thedisconnecting means shall be a listed device.Panel Statement: See panel statement on Comment 12-



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12-19 Log #2093 NEC-P12(620.51(A) Exception No.


Submitter: Kevin L. Brinkman , AEMA, Dave BalmerComment on Proposal No: 12-Recommendation: Please consider approval as modified:

620.51 Disconnecting Means.Add to end of Exception for (A) the following:Where an individual branch circuit supplies a stairwav chairlift. the stairwav chairlift shall be permitted to be

cord-and-pluo connected provided it complies with 422. 16(A).Substantiation: Stairway chairlifts are typically supplied with a flexible cord for connection to a receptacle. This type ofequipment may need to be removed for service , similar to many appliances. A cord-and-plug connected stairway chairliftallows the unit to be easily disconnected for service. The proposal has been reworded to use language similar to that in422. 16 for cord-and-plug connected appliances.Panel Meeting Action: Accept in PrincipleNumber the existing exception as Exception NO. 1 and add the following new Exception NO.

Exception NO. 2: Where an individual branch circuit supplies a stairway chairlift , the stairway chairlift shall be permittedto be cord-and-plug connected , provided it complies with 422. 16(A) and the cord does not exceed 1. 8m (6 ft) in length.

Panel Statement: The panel agrees with the intent of this comment and believes the revised wording meets the intentof the submitter.



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12-20 Log #554 NEC-P12(620. 51 (A) Exception)


Submitter: Andy Juhasz , Kone, Inc. / Rep. National Elevator Industry Inc. (NEil)Comment on Proposal No: 12-Recommendation: Revise the text shown in the ROP under the Panel Action as follows:The provision for lockina or addina a lock to the disconnectina means shall be installed on or at the switch or circuit

breaker used as the disconnectina means and shall remain in place with or without the lock installed. Portable means foradd in a a lock to the switch or circuit breaker shall not be permitted. other than means to add multiple locks such as amultiple lock hasp.Substantiation: Coordinate with same change made in Proposal 12-51.Panel Meeting Action: Accept in PrincipleRevise the sentence that reads

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Portable means for add in a a lock to the switch or circuit breaker shall not be permitted as the means reauired to beinstalled at and remain with the eauipment."


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12-21 Log #2092 NEC-P12(620.51 (C))


Submitter: Kevin L. Brinkman , AEMA , Dave BalmerComment on Proposal No: 12-Recommendation: Please consider approval as modified.

620.51 Disconnecting Means.(C) Location.(4) On Wheelchair Lifts and Stairway Chairlifts. On wheelchair lifts and stairway chairlifts , the disconnecting means

shall be located within sight of the motor controller. Where the disconnectinq means cannot be located within siQht of themotor controller lift shall be provided with a manually operated switch in the control circuit to prevent startinQ. The

manually operated switch shall be located adiacent to the equipment.Substantiation: On most platform (wheelchair) lifts the motor controller is located within the structure of the liftmechanism and the lift is installed within a runway enclosure , unlike an eleyator that traditionally has had a separatemachine room or space. The running clearance requirements in AS ME A 18. 1 do not allow sufficient room within therunway to mount the disconnecting means and provide working clearance; therefore , the disconnecting means needs tobe mounted outside the runway. Also, for curved stairway lifts that may have the motor controller on the platform , it is

not possible to have the disconnecting means within sight of the controller on the platform. The following revisedproposal addresses the Panel's statement regarding the runway door and uses requirements similar to those in620. 51 (C)(1).Panel Meeting Action: Reject

Panel Statement: The submitter has not provided sufficient technical substantiation for the change. Furthermore , the

comment would create contradictory requirements within the Code.



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12-22 Log #1326 NEC-P12(620. 51 (C)(1))


Submitter: Kevin S. Arnold , BussmannComment on Proposal No: 12-Recommendation: Add this new text to the end of the proposed text: "The additional switch shall be a listed device.proposed by the original proposal.This switch shall complv with 620.91 (C) if connected on the line side of the elevator controller if additionally powered

bv an emerqency or standbv power svstem.Substantiation: We feel that this additional text should be added for safety reasons. Adding an additional disconnectwithin slight is intended to increase the level of safety for this type of installation. The traditional shunt trip disconnectthat is used to disconnect the elevator motor has an auxiliary contact that is mechanically connected to thedisconnecting mechanism of the switch so it disconnects all power sources , both the normal power and the emergencyor standby power which, for a hydraulic elevator, controls a solenoid to a piston drain valve. Adding an additionalnon-fused disconnect will negate this safety feature if it does not also disconnect both normal and emergency or standbypower. Just disconnecting the non-fused switch for normal power will still leave the emergency or standby poweroperable , providing power to the solenoid and allowing the piston drain valve to open which allows the elevator to moveand create a safety issue. Therefore , where an emergency or standby power source is connected to the controller, thenew additional disconnect must be required to disconnect both the normal and emergency or standby power.

Overall , we feel this will provide for a safer system as long as all power to the elevator motor is disconnected by thisrequirement.

Note: Supporting material is available for review at NFPA Headquarters.Panel Meeting Action: Accept in PrincipleRevise the last sentence of the committee action on Proposal 12-58 to read as follows:

The additional switch shall be a listed device and shall comply with 620. 91 (C).

Panel Statement: The revised wording meets the intent of the submitter.



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12-23 Log #555 NEC-P12(620.53)


Submitter: Andy Juhasz , Kone , Inc. / Rep. National Elevator Industry Inc. (NEil)Comment on Proposal No: 12-Recommendation: Revise the text shown in the ROP under the Panel Action as follows:The provision for lockina or add in a a lock to the disconnectina means shall be installed on or at the switch or circuit

breaker used as the disconnectina means and shall remain in place with or without the lock installed. Portable means foradd in a a lock to the switch or circuit breaker shall not be permitted, other than means to add multiple locks such as amultiple lock hasp.Substantiation: Coordinate with same change made in Proposal 12-51.Panel Meeting Action: Accept in PrincipleRevise the sentence that reads

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Portable means for add in a a lock to the switch or circuit breaker shall not be permitted as the means reauired to beinstalled at and remain with the eauipment."




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12-24 Log #556 NEC-P12(620.54)


Submitter: Andy Juhasz , Kone , Inc. / Rep. National Elevator Industry Inc. (NEil)Comment on Proposal No: 12-Recommendation: Revise the text shown in the ROP under the Panel Action as follows:The provision for lockinq or addinq a lock to the disconnectinq means shall be installed on or at the switch or circuit

breaker used as the disconnectinq means and shall remain in place with or without the lock installed. Portable means foraddinq a lock to the switch or circuit breaker shall not be permitted. other than means to add multiple locks such as amultiple lock hasp.Substantiation: While Mr. White has a valid concern and comment, it should be made clear that portable means otherthan those legitimately needed are not to be permitted.Panel Meeting Action: Accept in PrincipleRevise the sentence that reads

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Portable means for addinq a lock to the switch or circuit breaker shall not be permitted as the means required to beinstalled at and remain with the equipment."



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12-25 Log #1856 NEC-P12(620. 54)



breaker used as the disconnecting means and shall remain in place with or without the lock installed. Pu,lClult: "'t:ClII fu,

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Substantiation: The last sentence that was added by the panel "Portable means for adding a lock to the switch orcircuit breaker shall not be permitted." Will prohibit the use of portable devices that provide for the attachment of multiplelocks (i.e. Scissors) to the locking mechanism. The sentence should be removed.

Panel Meeting Action: Accept in PrincipleRevise the sentence that reads, "Portable means for adding a lock to the switch or circuit breaker shall not be

permitted" of committee action on Proposal 12-66 to read as follows:Portable means for addinq a lock to the switch or circuit breaker shall not be permitted as the means required to be

installed at and remain with the equipment."



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12-26 Log #557 NEC-P12(620. 55)


Submitter: Andy Juhasz , Kone , Inc. / Rep. National Elevator Industry Inc. (NEil)Comment on Proposal No: 12-Recommend.ation: Revise the text shown in the ROP under the Panel Action as follows:The provision for lockinq or addinq a lock to the disconnectinq means shall be installed on or at the switch or circuit

breaker used as the disconnectinq means and shall remain in place with or without the lock installed. Portable means foraddinq a lock to the switch or circuit breaker shall not be permitted, other than means to add multiple locks such as amultiple lock hasp.Substantiation: Coordinate with same change made in Proposal 12-51.Panel Meeting Action: Accept in PrincipleRevise the sentence that reads

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12-27 Log #1858 NEC-P12(620. 55)



breaker used as the disconnecting means and shall remain in place with or without the lock installed. PVIICl IJlt: "'t:ClI'" fu,

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Substantiation: The last sentence that was added by the panel "Portable means for adding a lock to the switch orcircuit breaker shall not be permitted. " Will prohibit the use of portable devices that provide for the attachment of multiplelocks (i.e. Scissors) to the locking mechanism. The sentence should be removed.

Panel Meeting Action: Accept in PrincipleRevise the sentence that reads

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12-28 Log #954 NEC-P12(620.62)


Submitter: John Cool , PowerPlus Engineering IncComment on Proposal No: 12-Recommendation: The Technical Panel should continue to reject this proposal.Substantiation: Selective coordination is an important requirement for elevator circuits. Elevators are used for egressof building inhabitants during emergency situations and can be vital to firefighters for effective and rapid deployment.This requirement has been in several code cycles and there are several viable solutions to achieve selectivecoordination for elevator circuits. Our firm has done many jobs and easily meets the selective coordinationrequirements as well as other important life safety elevator system requirements. This requirement can be achievedwith either fusible systems or circuit breaker systems.Panel Meeting Action: Accept


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12-29 Log #1349 NEC-P12(620.62)


Submitter: Bruce W. Blouin , Power Analysis Associates IncComment on Proposal No: 12-Recommendation: The Panel should continue to reject this Proposal.Substantiation: New York City has had a requirement for Selective Coordination for decades. The NEC has alsorequired selective coordination for ground faults in health care facilities for decades. Requirements for selectivelycoordinated overcurrent protective devices in elevator circuits have existed in the NEC since the 1993 edition. Beginningwith the 2005 NEC , requirements were added for selective coordination of emergency circuits and legally requiredstandby systems. We ve found design solutions to meet these requirements , with both circuit breakers and fusedswitches , without compromising safety or reliability, and wonder what all the fuss is about.

We are a consulting engineering firm that specializes in short-circuit and coordination studies, so we are intimatelyfamiliar with what it takes to selectively coordinate both fuses and circuit breakers. It does take sharp engineering skillsto design both a selectively coordinated system and at the same time to minimize arc-flash energies and equipmentshort-circuit damage, but that is precisely what's needed for critical circuits such as are found in elevator, emergencysystems, and legally required standby systems. But , it can be and is achieved on a regular basis. Requiring totalselectivity does not tie our hands when it comes to multiple emergency generators. We can design in transfer switches.

ve heard of complaints about two devices in series of the same size not coordinating. Simply making thedownstream disconnecting means a non-fused switch solves that problem. There is enough latitude in 450.3 to choose

the overcurrent protective devices on the line side and load side of a transformer so that they will selectively coordinate.We also do not see any issues with violations of other NFPA Standards that call out for "optimized" selectivecoordination. To us, optimized means the very best that you can do, and total selectivity is certainly the very best thatyou can do. Finally, there are arguments that there needn t be a requirement to selectively coordinate in the short-circuitrange because short-circuits rarely happen. If that were the case, we don t need Sections 110.9 and 110. 10 in the NEC.

Nor do we need the new requirements for marked short-circuit current ratings on industrial machinery or industrialcontrol panels. Do you insure your home for just $5,000 because most claims are under that amount? Or, do you insureit for the full value, just in case it does burn to the ground or get blown away in a storm? Of course you insure it for thefull value, even though a total loss may be an unusual event. Needless to say, we believe the Panel should continue tosupport the requirement for selective coordination in elevator circuits.Panel Meeting Action: Accept


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12-30 Log #1401 NEC-P12(620.62)


Submitter: Merrell Young, Herzig EngineeringComment on Proposal No: 12-Recommendation: Panel 12 needs to continue to Reject this and similar proposals that remove the requirement fortotal selective coordination of elevator circuits.Substantiation: I would consider our consulting firm as experts on arc-flash , short-circuit, and coordination studies. Assuch , we have been able to meet the selective coordination requirements found in 700. , 701. , and 620. , while atthe same time , minimizing arc-flash hazards and improving reliability and continuity of service. We are able to obtainselective coordination for both overload and short-circuit conditions by utilizing various design techniques. For example,we can specify zone selective interlocking with short-time delay on the upstream circuit breaker so that upstream anddownstream circuit breakers will coordinate in both the overload zone and the short-circuit zone, and provide forinstantaneous reaction time for short circuits (including arcing faults), between the circuit breakers , which keeps

arc-flash hazards to a minimum. Where our customers want fuses , we specify current- limiting fuses that can bothselectively coordinate and minimize arc-flash hazards. We are able to design with transfer switches and differentrelaying schemes in order to utilize multiple emergency generators in parallel , for the greatest reliability, As far asground faults are concerned , we sometimes add an additional layer of ground fault protection in order to selectivelycoordinate under phase to ground faults , utilizing the same approach as is already required for health care facilities. Inshort, we don t have to compromise to meet the selective coordination requirements , minimize personnel hazards , and

protect equipment It does take time and requires a thorough understanding of the entire electrical system , and that'swhat consulting engineers get paid to do.Panel Meeting Action: Accept



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12-31 Log #2086 NEC-P12(620.62)


Submitter: Philip M. Piqueira , General Electric Co.Comment on Proposal No: 12-Recommendation: I disagree with the panel action. Accept Proposal 12-72 as written.Substantiation: Selective coordination is a system design issue , not a Code issue.

Systems are normally designed for selective coordination in the overload region of the overcurrent device time-currentcurves. If this were not so, they would not operate under normal conditions , so what is really being called for in thisrequirement is overload and short circuit selective coordination. In order to achieve total short circuit selectivecoordination , the size of upstream overcurrent protective devices may need to be increased and/or time delay tripcharacteristics increased , thereby possibly increasing the arc flash hazard. In other words , by forcing selectivecoordination for an event that most likely wil never occur, namely a bolted fault, the hazards involved in performingtasks which most likely will occur , namely system maintenance , may be increased. This is why system designers needthe flexibility to optimize the design of a system , which the current requirement does not allow.

The need for the flexibility to optimize the design of a system is recognized in IEEE Standard 242-2001 (The BuffBook). Section 15. 1 states

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In applying protective devices, it is occasionally necessary to compromise betweenprotection and selectivity. While experience may suggest one alternative over another , the preferred approach is to favorprotection over selectivity. Which choice is made , however, is dependent on the equipment damage and the effect onthe process.

In summary, GE strongly supports selective coordination as a valuable safety asset in the current range whereoverloads most often occur. However, GE does not support the mandate for Selective Coordination for ALL currentranges and ALL overcurrent devices because safety and reliability can both actually be diminished , thus the sectionshould be deleted.Panel Meeting Action: Reject

Panel Statement: The Code is not a design specification but does provide the minimum requirements. Article 620provides additional needed requirements for increased reliability and safety of elevator circuits. The selectivecoordination requirement increases reliability in elevator circuits. How selective coordination is achieved is up to thedesign engineer.



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12-32 Log #2195 NEC-P12(620. 62)


Submitter: Peter R. Walsh , Peter R. Walsh , P. E. & AssociatesComment on Proposal No: 12-Recommendation: The Panel should continue to Reject this Proposal.Substantiation: The NEC has required selective coordination for elevator circuits for years without major problems.The recent expansion of requirements makes good sense for the users of the buildings. Who wants to to be stranded inan elevator or suffer from a blackout as a result of non-selective coordination? Engineers have software programs , likeEasy Power Version 8.0 that can automate selective coordination.With Zone Selective Coordination trips , almost anything can be coordinated. Arc flash can be adjusted by proper trips.

The code making panel should require reliable power through selective coordination of important circuits.Panel Meeting Action: Accept


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12-33 Log #2345 NEC-P12(620.62)


Submitter: Alan Manche, Square D CompanyComment on Proposal No: 12-Recommendation, Accept the Proposal in Principle and revise the present text to read:

620. 62 Selective Coordination. Where more than one drivino machine disconnectino means is supplied bv a sino Ie

feeder. the overcurrent protective devices in each disconnectino means shall be selected to optimize selectivecoordination with on Iv the immediate line side feeder device ahead of the machine disconnectino means.Substantiation: It is clearly recognized in the NEMA comment that selective coordination can compromise reliabilityand safety if the engineering community is not provided appropriate latitude to ensure all performance aspects areaddressed. If the panel is not willing to delete this section then it is prudent that the panel recognize this requirementcan negatively impact safety and reliability and utilize similar language offered by Mr. Lottmann at NEMA to "optimizeselective coordination.The present wording is often misunderstood across the industry. The wording in 700.27 has likely created this issue by

requiring ALL supply side devices to the selective and 620 using the phrase "

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any supply side... devices...Recognizing the reason selectivity was put in place in 620 was to address an identification issue of not knowing thelocation of the feeder, selectivity was intended to address only that concern not any other safety issue. The historicalrecords are clear and simple. I would invite you to read Mr. Lawry s substantiation in 12-84 and negative commentsfrom panel chair Mr. Trout in the TCR for the 1993 NEC. The panel then decided to addresses the identification issue ina later cycle and did not remove selectivity. The confusion comes into play with the present wording of"

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coordinatedwith any other supply side overcurrent protective device.

Once again, if this is read to be applied back to the service , consider a campus style electrical system arrangementmaking it impossible to comply with the NEC. One can only conclude that if that is the intent of the panel that thissection is not perceived as a safety issue and not being enforced. It also would not address all of the other branchcircuits or feeders that are not selective or simply become overloaded and could trip a feeder on the system thatsupplies the feeder for the elevator. The intent as documented in the historical documents points only between thebranch and immediate feeder devices and the challenge of finding the line side overcurrent device that tripped. Arevision as provided above would clarify that "optimizing" selectivity on the branch and feeder would be required andremove most of the concerns that create a challenge for maximizing safety, reliability and performance.Panel Meeting Action: Reject

Panel Statement: The panel does not agree that the requirements for selective coordination reduce the level ofreliability based on the substantiation provided. The rule exists to require a certain level of performance that provides thelevel of reliability needed for elevator circuits. Suffcient technical substantiation is not provided for removal of thisrequirement.


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12-34 Log #79 NEC-P12(620.91. FPN )


Submitter: Technical Correlating Committee on National Electrical Code(IComment on Proposal No: 12-Recommendation: The Technical Correlating Committee directs that the Panel clarify the Panel Action on this Proposalwith respect to the appropriateness of the word " requirement" . This action will be considered by the Panel as a PublicComment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptRevise the recommendation of Proposal 12-74 to remove the word "requirement."Panel Statement: The panel accepts the direction of the TCC and has removed the word "requirement" from the FPN.


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12-35 Log #80 NEC-P12(620. , FPN )


Submitter: Technical Correlating Committee on National Electrical Code(I,Comment on Proposal No: 12-Recommendation: The Technical Correlating Committee directs that the Panel clarify the Panel Action on this Proposalwith respect to the appropriateness of the word " requirement" . This action will be considered by the Panel as a PublicComment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptPanel Statement: The panel accepts the direction of the TCC. See panel action and statement on Comment 12-34.



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12-36 Log #533 NEC-P12(625.28)


Submitter: Dan Leaf, Seneca , SCComment on Proposal No: 12-Recommendation: Accept the proposal.Substantiation: Requirement is superfluous. Hazardous (classified) areas are required to comply with Articles 500through 516 by 90.3. There are , for example , no specific requirements for wet locations since it is unnecessary; 90.indicates Chapters 1 through 4 apply where such locations are covered.Panel Meeting Action: Reject

Panel Statement: The panel reaffirms its position. No new substantiation was supplied with the comment.



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12-37 Log #81 NEC-P12(626 (New))


Submitter: Technical Correlating Committee on National Electrical Code(I,Comment on Proposal No: 12-Recommendation: The Technical Correlating Committee advises that Article placement , titles and scope statementsare the responsibility of the Technical Correlating Committee and , based on the current content of the Article, theTechnical Correlating Committee directs that the Title and Scope be rewritten to read as follows:

Article 626 Electrified Truck Parking Spaces626. 1 Scope. The provisions of this article cover the electrical conductors and equipment external to the truck or

transport refrigerated unit that connect trucks or transport refrigerated units to a supply of electricity, and the installationof equipment and devices related to electrical installations within an electrified truck parking space.This action will be considered by the Panel as a Public Comment.

Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptPanel Statement: The panel accepts the direction of the TCC. See panel action on Comment 12-44.



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12-38 Log #279 NEC-P12(626 (New) )


Submitter: Stanley J. Folz, Morse Electric , Inc.

Comment on Proposal No: 12-Recommendation: Delete entire new Article.Substantiation: All of the information to wire an Electrified Parking Space is already contained in the NEC. Is it theintention of the NEC to provide Articles for every specialized application that exists?Panel Meeting Action: Reject

Panel Statement: Although many of the actual requirements for an electrified truck parking space are found inChapters 1 though 4 of the existing NEC Code, there are additional requirements and choices needed to provide aconsistent and safe installation as described in the new Article 626

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12-39 Log #883 NEC-P12(626 (New) )


Submitter: Dan Kelly, St. Louis , MO

Comment on Proposal No: 12-Recommendation: The Panel action should have been Reject.Substantiation: The proposed new Article 626 does not contain any material that supplements or modifies anymaterials in Chapters 1-4. Therefore , the new article is not needed. Also , there is not any special equipment involved.Panel Meeting Action: Reject

Panel Statement: See panel statement on Comment 12-38.


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12-40 Log #1327 NEC-P12(626 (New) )


Submitter: Robert Clarke , Truck Manufacturers AssociationComment on Proposal No: 12-Recommendation: Relative to the currently proposed version of Article 626 , we offer the following recommendations:. Battery chargers, small inverter systems , fuel heaters , fuel/water separator and heaters , and oil pan heaters should

be included in the exceptions list , along with engine block heaters. These systems , just as engine block heaters, areemployed in past and current tractor models , as well as in future product. We have proposed language, underlined, in

. the following excerpt which includes sections Twenty-Ampere Power-Supply Assembly (section 626.30. 30(1) on page70-671); Conductors (section 626.30. 30(2)(F)(1) on page 70-671); Cord (section 626.30. 30(2)(F)(2) on page 70-672):

30.30 Separable Power-Supply Cable Assembly. Where a separable power-supply cable assembly consisting of a cordwith a female connector and attachment plug is provided, the vehicle shall be equipped with a permanently mountedflanged surface inlet in accordance with 626.32(A), wired directly to the panel board by an approved wiring method. Theattachment plug shall be of a listed type. The power-supply cable assembly or assemblies shall be identified OEM(factory) supplied or OEM or factory approved, and be of one of the following types and rating specified herein. Cordswith adapters and pigtail ends, extension cords, and similar items shall not be attached to, provided or shipped with atruck.A. Rating(s).

(1) Twenty-Ampere Power-Supply Assembly. Trucks wired with a 20-ampere, 125-volt truck inlet , in accordance with626.21 (F)(1), shall use a listed 20-ampere power-supply assembly.

Exception: A listed separable power supply cable assembly, either hard-service or extra hard service and rated15-amperes , 125 volts may be provided for connection to an engine block heater r. batterv charqer. inverter svstemusinq less than 15 amps. fuel heater. oil pan heater. or fuel/water separator/heaterl for legacy vehicles.

(2) Thirty-Ampere Power-Supply Assembly. Trucks wired with a 30-ampere, 120/208-volt truck inlet, in accordance with626.21 (F)(2) shall use a listed 30-ampere main power-supply assembly.

(F) Listed Cord Assemblies.(1) Conductors. The cord shall be a listed type with three or four conductors , for single phase connection, one of which

shall be identified by a continuous green color for use as the equipment grounding conductor.Exception: A separate listed three conductor separable power supply cable assembly, having one conductor identified

by a continuous green color for use as the equipment grounding conductor , and rated 15 amperes , 125-volts may beprovided for connection to an engine block heater r. batterv charqer. inverter svstem of 1000W or less. fuel heater. oilpan heater. or fuel/water separator/heaterl for legacy vehicles.

(2) Cord. Extra-hard usage flexible cords and cables rated not less than 194 F (90 C), 600 volts; listed for both wetlocations and sunlight resistance; and having an outer jacket rated to be resistant to temperature extremes , oil , gasoline,ozone , abrasion , acids , and chemicals shall be permitted where flexibility is necessary between the electrified truckparking space supply equipment and the panelboard and inlet(s) on the truck.

Exception: Cords for the separable power supply cable assembly for 15 and 20A connections may be a hard-servicetype.

(3) Attachment Plug. The attachment plug(s) shall be listed , by itself or as part of a cord set, for the purpose and shallbe molded to or installed on the flexible cord so that it is secured tightly to the cord at the point where the cord enters theattachment plug. If a right-angle cap is used, the configuration shall be oriented so that the grounding member is farthestfrom the cord. Where a flexible cord is provided with an equipment grounding conductor and equipped with anattachment plug, the attachment plug shall comply with 250. 138(A) and 250. 138(B).

(3) Connection to a 20-Ampere Receptacle. A separable power supply cable assembly for connection to a truck havinga 20-ampere inlet shall have an attachment plug that shall be 2-pole, 3-wire , grounding type , rated 20 amperes , 125volts and intended for use with the 20-ampere, 125-volt receptacle, conforming to the configuration shown in Figurexxx. 21(e). 626. 30(c)

Exception: A separable power supply cable assembly, rated 15A, provided for the connection of an engine block heaterr. a batterv charqer. an inverter svstem of 1000W or less. a fuel heater. an oil pan heater. and/or a fuel/waterseparator/heaterl only, shall have an attachment plug that shall be 2-pole , 3-wire, grounding type , rated 15 amperes,125 volts , conforming to the configuration shown in Figure 626.30(c) xxx.21 (d).FPN: Complete details of the 15- or 20-ampere plug and receptacle configuration can be found in the National

Electrical Manufacturers Association Standard for Dimensions of Attachment Plugs and Receptacles, ANSI/NEMA WD2002 , Figure 5-15 or 5-20.


Report on Comments - June 2007 NFP A. Section 626.32.32 proposes specifications for on-board equipment yet vehicle specification standards are the

purview of the Society of Automotive Engineers J2698 document. The following two parts of Section 626.32.32 indicatedin strikethrough format should therefore be removed:

32.32 Truck/ehicle Coupler.(A) Inlet Rating and Configuration. Truck Inlet.

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power of the primary power source is accounted for in the Society of Automotive Engineers J2698 document. Thefollowing part indicated in strikethrough format should therefore be removed:

34.34 Lv f P, illldlY PVVV"" 3vulv"'. M"'dll I'd ll L", I-lvv iJ",J .., lI'dl, ul-v" f vv lld\:'" f,vllIlI,,, ulilily VI viii""

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I-dl ill\: ~I-dv'" vv i, ill\: I"'"1 UI .I", 1-''"lIill",J Ly 626. 36.Substantiation: TMA appreciates the opportunity to provide comments on this latest version of the proposed 2008National Electrical Code , Article 626: Electrified Truck Parking Space Equipment (hereinafter Article 626). TMArepresents the following companies: Ford Motor Company, Freightliner LLC , General Motors Corporation , InternationalTruck and Engine Corporation , Isuzu Commercial Truck of America , Inc. , Kenworth Truck Company, Mack Trucks , Inc.

Peterbilt Motors Company, Sterling Truck Company, Volvo Truck North America , Inc. , and Western Star Trucks. Manyof the recommendations we offered in our September 23 , 2005, letter have been addressed in this latest version; weappreciate the NEC code article committee s responsiveness in this regard. A few issues remain , however.

Paralleling the NEC effort , we can report that the corresponding SAE Task Force has balloted SAE J2698 - PrimarySingle Phase Nominal 120 VAC Wiring Distribution Assembly Design. This document, while still in the approval processwill provide the basis for the on-board vehicle wiring assemblies to which parking space electrical connections can bemade. It is critical to the successful implementation of truck stop electrification that the two documents provide aconsistent and compatible interface between the vehicle and the electrified parking space.The following compatibility issues remain crucial to enabling trucks to connect to off-board power:1. TMA maintains our previous recommendation that a minimum of two 20-ampere, 120-volt AC connections are

needed at electrified truck parking spaces. Depending on environmental conditions, the driver and vehicle may notutilize this full capacity, but this minimum availability is necessary for a viable electrified truck parking space system.2. Trucks may be equipped with: NEMA 5- 15P or NEMA 5-20P plugs and/or vehicle shore power connectors for engine

block heaters , battery chargers, inverter systems of 1000 watts or less , fuel heaters , fuel/water separator and heatersand oil pan heaters; and with NEMA 5-20P plugs and/or vehicle shore power connectors for on-board 120V AC systems.

3. At this time, TMA members do not envision their customers needing a 30-ampere , 120/208 volt AC configuration onboard the truck. While it is difficult to predict future power configurations, our members who are participating in theSAEJ2698 standard development process are only able to identify need for 120-volt AC systems.Panel Meeting Action: Reject

Panel Statement: The panel realizes that there are many on-board loads but on-board systems are beyond the scopeof this article.The requirements for protection against corrosion and mechanical damage and loss of primary source are necessaryand should not be deleted. See panel action and statement on Comment 12-44.



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12-41 Log #1420 NEC-P12(626 (New) )


Submitter: Vince 8aclawski , National Electrical Manufacturers Association (NEMA)Comment on Proposal No: 12-Recommendation: (Section numbering in this Comment replaces "xxx" from the original Proposal with "626" in specificnumbering, based on the assignment of this Proposal as new Article 626.The Proposal should be Accepted in Principle, with the following specific modifications:626.3 General Requirements. A. Systems. This article covers 120:, 120/208- , VI 120/240- . 208Y/120- . 480- , or 480Y/277-volts, nominal , single-or

three-phase, 3 or 4-wire power systems respectively, with ground. (remainder unchanged)II. Electrified Parking Space Electrical Wiring System. (insert after 626.4 , before 626.626.x Hazardous (Classified) Locations.(A) Motor Fuel Oispensinq Stations. Electrified parkinq space electrical wirinq svstems located at or servinq motor fuel

dispensinq stations shall comply with Article 514 in addition to the requirements of this article.(8) Vehicle Repair and Storaqe Facilities. Electrified parkinq space electrical wirinq systems located at facilities for the

repair or storaqe of self-propelled vehicles that use volatile flammable liquids or flammable qases for fuel or power shallcomply with Article 511 in addition to the requirements of this article.

FPN: For additional information. see NFPA 30A. 2003. Motor Fuel Oispensinq Facilities and Repair Garaqes.(revised 626.5 to reference above)626. 5 Other Articles. Except where required bv 626.x, wherever WI,t:IIt:vt:1 the requirements of articles of this Code

and Article 626 differ, the requirements of Article 626 apply.626.20(8) Type Receptacles Provided. (626.20(8) main paragraph and 626.20(8)(1) unchanged)(2) One 30-ampere, 120/208-volt, 3-pole , 4-wire receptacle or one 30-ampere. 125/250-volt. 3-pole. 4-wire receptacleFPr . CVllltJ ldt: Jda ib v f lI,t: 30 allltJt:1 t: fJlu allJ I t:vt:tJLadt: vVll UI a livlI vall I.t: fuUIIJ ill lI,t: 3LallJai J fu, Pill all

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626.21(0) Attachment Plug. (626.21(0) main paragraph and 626.21(0)(1) unchanged)(2) Connection to a 30-Ampere Receptacle.(a) rated 30 amperes , 120/208 volts and intended for use with the 30-ampere, 120/208-volt receptacle , wll fvlllI i'l

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Lv II It: vVllfi UI alivlI I,vvvil ill Fi UI t: 020.21 (1.)

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31t:t:vt: CVll UI alivll , UL 1 080, CVll ul alivil vlivll , Pal L C2. 1 0 VI C3.

(next paragraph of 626.21 (0) unchanged)Figure 626.21 (delete configurations (b), (c), (f), and (g) and their rows)626.21(E) Connector. (626.21 (E)(1) unchanged)(2) The connector for a separable power supply cable assembly, as specified in 626.21 (A)(2) , shall be a 3-pole, 4-wire

grounding type, either:(a) rated 30 amperes , 120/208 volts vvild It:J i,.ld vVI II I t:vlv I lytJt:, vVll fvllll i'l Iv II It: vVll UI a iivil I,vvv" i,l ri ul t:

620.21 (v) allJ intended for use with 120/208-volt iLd It:J inlet vVll fvllll ill lv lI,t: vVll ul aLivlI I'VVVII ill ul t:

020.21(v),(b) rated 30 amperes, 125/250 volts, wllfullll i'l Lv lI,t: vVll UI aLivl1 1,vvVI ill Fi ul t: 020.21 (Q allJ intended for use

with 125/250-volt inlet vVll ulalivll vVll fvllll ill lv lI,t: vVll ulaLivlI 1,vVVI ill Fi ult: 020.21(1.).

FPN. CVlllfJldt: Jda ib v f lI,t: 30 allltJt:1 t: fllu~ allJ I t:vt:tJlavlt vVll UI alivlI vall I.t: fvulIJ i,l lI,t: 3LallJai J fVI Pill all31t:t:vt: CVllfi ulaLivlI , UL 1086 , CVll ulalivlI t:vlivlI , Pad C2. 10 VI C3.

FPN: The connector in 626.21 (E)(2)(b) may be used on a 120/208-volt , single-phase circuit.620.20(0) 3vv iLd I-RaLd VI ",Lt:l lvv"t:J Rt:vt:flLadt: (delete 626.20(0) in its entirety)626. 21 (A) Rating. (626.21 (A) main paragraphs unchanged)(1) Twenty-Arrpere Power-Supply Assembly. Trucks wired with a 20-ampere , 125-volt truck inlet , in accordance with

020.21(F)(1) 626.2HGH1) , shall use a listed 20-ampere power-supply assembly.



Exception: (unchanged)(2) Thirty-Ampere Power-Supply Assembly. Trucks wired with a 30-ampere , 120/208- or 125/250-volt truck inlet , in

accordance with 026.21 (F)(2) 626.2HG)(2) , shall use a matina listed 30-ampere main power-supply assembly havina

the same voltaae ratina.020.21 (r) 3vvild I-RClld VI T, u\,J, Cvul- lt:1. (delete 626.21 (F) in its entirety)626.21 (G) Truck Coupler.(2) Construction and Installation. The truck coupler shall be lJVII;:1. udd ill CllJWI JCllllJt: vv illl 020. 21 (r) ClIIJ be installed

so as to guard against inadvertent personal contact l"y 1-t:I;:VII;:with parts made live from the electrified parking spacesupply equipment or truck.

020.28(0) 3vv ild I-RClld VI Illb Ivd,t:J Rt:lJt:I- ICldt:;:. (delete 626.28(0) in its entirety)626. 11 Calculations , Table 626. 10 Demand Factors for Services and Feeders, and USDA Agriculture Plant Hardiness

Zone Map.

This proposal's sole mandatory method to correlate Demand Factor to the USDA Agriculture Plant Hardiness ZoneMap should be a nonmandatory FPN (as one possible alternative) to allow the AHJ to select alternative methods toestablish the applicable Demand Factor.

Reevaluate the percentage Demand Factors assigned to any given Zone based upon the year-round data, rather thansolely upon January data , to ensure that those values reflect the relative balance between heating and cooling loadsthat shift in the various climatic zones as the summer months approach. Also , the percentage Demand Factors shouldbe based upon coincident peak daily demand rather than average daily demand.Substantiation: NEMA supports proposed new Article 626 in Principle but disagrees with some specifics within theProposal , as revised above the substantiated as follows:

626.3: The proposed Article 626 covers Transport Refrigerated Units , also known as Refrigerated Transport Units.American National Standard ANSI/UL 1686, Figures C2. 11 and C2. , defines the configurations for receptacles/cordconnectors and plugs/inlets , respectively, for such refrigerated transport units and already specifies the North Americanrating as 30 amperes at 440 volts 3-phase (nominal voltage 480 volts 3-phase). Furthermore , proposed 626. 5(A)

addresses "480Y/277 , and 480 volts . Include 480- and 480Y/277-volts in the 626.3 delineation of covered systemvoltages. Editorial: show " 120/208-" as "208Y/120-" to be consistent with 220.5(A).

626.x Hazardous (Classified) Locations. 626.5: Electrified parking spaces at trucking stops have the potential of beingin close proximity to occupancies for fuel dispensing and for vehicle repair and storage; these occupancies arehazardous (classified) locations. Proposed 626.5 is ambiguous and may be misconstrued to mean that specificrequirements of Article 626 intended solely for ordinary locations might also be sufficient for hazardous (classified)locations as well and would incorrectly take precedence over requirements of Articles 514 and 511 in those classifiedlocations. Arcing devices such as plugs, outlets , switches , switchgear, etc. , should not be used in hazardous (classified)locations , unless evaluated and Listed as suitable for such locations. Revision in accordance with this Commentremoves that ambiguity. 626.x(A) and 626.x(B) for trucking vehicles parallel similar established requirements in 555.and 555. , respectively, for boating vehicles.

626.20(B)(2), 626.20(B)(2) FPNs (two), 626.21 (D)(2)(a), 626.21 (D)(2)(b), 626.21 (0)(2) FPN , Figure 626.626.21 (E)(2)(a), 626.21 (E)(2)(b), 626.21 (E)(2) first FPN: Presently, 30-ampere 208Y/120 V or 125/250 V , 3-pole 4-wire,

is new to truck stop electrification and there are no specific plug/receptacle configurations standardized for thisapplication either by a ratified consensus standard or by established de facto universal practices.

Consequently, unilateral assignment of specific configurations would be prescriptive, rather than postscriptive , on the

part of NFPA. There are many eligible plug/receptacle configurations at these ratings. Unilateral assignment by NFPA tothese ratings of a specific plug/receptacle configuration neither standardized for this application either by a ratifiedconsensus standard or by established de facto practices may raise legal or regulatory issues for NFPA. If nothing elsethe Code should not be used as a design manual.

Furthermore , the referenced standard UL 1686 Part C (or Part B as well) contains no configurations where 2ungrounded conductors (2 of 3), 1 grounded conductor (neutral) and 1 grounding conductor (equipmentgrounding/bonding) are derived from a 208Y/120 V 3-phase + neutral + grounding (5-wire) system. The 2P+N+Gconfigurations indicated as (c) i'md (g) are not extracted from the published ANIS/UL 1686 standard. They may representa proprietary configuration for a proprietary, patented system of plugs and receptacles.When Article 625 was established, similar consensus could not be reached on competing configurations and there

were no established de facto configurations for that new application. Consequently, Article 625 was not permitted toinclude configurations prescriptively and indeed none are reflected. This same situation exists for Article 626 and theseproposed 30-ampere configurations should not be included.

By contrast, the proposal for Article 626 does not reflect the ANSI- and internationally-standardized configurationspecifically for the application for refrigerated units (RTU or TRU), in ANSI/UL 1686 Figures C2. 11 and C2. , for

30-ampere (North America)/32-ampere (elsewhere), 440-voIU380-volt , 60/50 Hz. Since this plug/receptaclePrinted on 12/8/2006


configuration is indeed formally standardized for this specific application , this ANSI- and internationally-standardized

configuration should be explicitly included in Article 626.626.20(0), 626.21 (F), 626.21 (G)(2), 626.28(0): The proposer s Substantiation for 626.20(0) and 626.21 (F) incorrectly

state "standard NEMA receptacles, plugs , connectors and inlets have not been rated for make and break under load andmay be damaged as a result of repeated connection or disconnection under load.

Standards ANSI/UL498 and ANSI/UL 1682 in fact specifically test bladed and pin-and-sleeve devices, respectively, forOverload and Resistance-To-Arcing cycling endurance while rupturing 150 percent of ampere-rated current (some areadditionally current-rupture tested based upon horsepower rating) as part of a sequence that includes temperature riseand may include contact weight retention. Indeed, some NEMA devices are additionally evaluated for 200 percentcycling current rupture for Federal Specification applications. The Substantiation offered no rationale or justification forthe 35 kA short circuit withstand rating. Indeed , for decades receptacles , plugs and couplers in the existing ANSI- and

internationally-standardized configuration specifically used with refrigerated units (RTU or TRU) are neither mandated tobe switch-rated nor to have a short circuit withstand rating at all; per 90. 1 (C), the Code is not intended as a design

specification.626.21 (A)(1), 626.21 (A)(2): Incorrectly referenced to subparagraphs in 626.21 (F) that does not exist. It would appear to

be the subparagraph in 626.21 (G) that was intended. 626.21 (A)(2) also omitted the 3D-ampere , 125/250 V rating

present elsewhere.626. 11 Calculations , Table 626. 10 Oemand Factors for Services and Feeders , and Agriculture Plant Hardiness Zone

Map: The Oemand Factor is established by Climatic Temperature Zones derived from the USOA Agriculture PlantHardiness Zone Map. This method to correlate Oemand Factor may be difficult for the AHJ to interpret locally andenforce. Locating any particular jurisdiction on the Agriculture Plant Hardiness .Zone Map may be difficult in areas

bordering zone transitions and may result in conflicting values. This particular methodology should be an optional FPNrather than mandated as the only method to allow the AHJ discretion in selecting alternative methods to establish theapplicable demand factor. The AHJ may be faced with drastic changes in elevation within that jurisdiction (mountainpasses , canyons , etc. ) and may warrant local deviations from the broadly assigned climatic zones.

Per the Proposal Substantiation for 626. 10, the assigned percentage Oemand Factors are based solely upon January

data. Those values may differ at other times of the year where the relative balance between heating and cooling loadsshift in the various climatic zones as the summer months approach. Consequently, the profile of kW per occupied spaceversus USOA Plant Hardiness Zones may differ throughout the year. Also , it is unclear whether peak or average daily

demand was used to establish those values. The Proposal Substantiation for 626. 10 indicates that "truck stops with

electrified parking spaces are filled to capacity or near capacity during the evening rest hours and are virtually emptyduring the day." The values for demand factors should, therefore, be based on peak daily demand when loads arecoincident.

Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.


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12-42 Log #1726 NEC-P12(626 (New) )


Submitter: Brian Sisco , Southern California EdisonComment on Proposal No: 12-Recommendation: Accept the Proposal for a new Article 626.Substantiation: In response to the comment made by Mr. 1. Hedges:The article is necessary because: (1) it contains requirements that are essential for safety and unique to this

application , (2) it disallows unsafe options that would otherwise be permitted by the existing code , and (3) it defines the

boundaries for electrical inspectors while establishing a safe infrastructure up to that boundary in anticipation ofpotentially unsafe conditions outside the jurisdiction of the code. Specifically, requirements unique to this application notcovered by Chapters 1 through 4 of the Code are: (1) Demand factors based upon climatic temperatures at the sitelocation. (2) Physical layout and configuration of equipment. The article excludes the "turtle back or speed bump" design

since such designs are easily damaged by snow removal equipment as well as water and flooding in truck parking sites.This article identifies the post , pedestal, overhead gantry, and raised concrete pad configurations as acceptable types,

thereby disallowing so-called turtle-back or speed bump designs that have been shown to be inherently unsafe due to

susceptibility to flooding or severe damage by snow plows. (3) Location or placement (height) of equipment at siteswhere existing/known flood plains exist. (4) Limitations to the maximum length of separable cable assemblies tominimize damage to the cables and prevent use of "daisy-chained" cord sets. Present Code requirements do not limit

the length of the cable assemblies that could reach 85 - 90 ft. Such lengths would promote the use of multiple cableassemblies connected in series, unacceptable voltage drops, an increased likelihood of damage to the cableassemblies , and exposure of the series connection (i. , connector plug) to possible immersion , disconnection under

load , etc. (5) Strain relief and breakaway requirements to prevent permanent equipment damage and exposure of liveparts for cable assemblies permanently attached to the equipment. (6) Preventing backfeed of energy where notintended. The aftermarket modification of vehicles , which is outside the jurisdiction of electrical inspectors or the OEMs,

poses unique problems in that modifications to the trucks may not have or provide appropriate protection. For exampleaftermarket auxiliary power units (APU's) and generators are commonly used to supply power to the truck when the

engine is shut down. Improper installation of these power sources can result in the backfeed of energy into the gridcreating an unsafe condition for electric utility workers. This article defines the boundaries while providing safety up tothe point of connection to the equipment. Chapters 1 through 4 do not address the issue of energy back feed.

Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter to include provisions

for electrified truck parking spaces.


Report on Commcnts - June 2007 NFP A 70

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12-43 Log #1984 NEC-P12(626 (New) )


Submitter: Noel Williams , Herriman , UT

Comment on Proposal No: 12-Recommendation: This Proposal should have been Rejected.Substantiation: More consideration should be given to the explanation of negative by Mr. Hedges. This article does notadd very much significantly new or different material other than the definition and the use of a specified connectionmeans. Since Chapter 6 is titled "Special Equipment " and a primary function of Chapter 6 is to provide rules that aredifferent in some respect from other requirements in the first four chapters, there should be something different orspecial about this equipment and it appears that there is little that is special or different. If a new article must be added , it

should be limited in content to those requirements that are special or different. This proposed article contains mostlyrequirements that are found elsewhere in the NEC. Adding additional unnecessary regulations and bulk to the NEC isnot in the interest of usability of this code. Furthermore, this article adds requirements that apply to the truck itself , which

is not, according to 90.2(B)(1), even within the scope of the NEC.Panel Meeting Action: Reject

Panel Statement: See panel statement on Comment 12-38.



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12-44 Log #2025 NEC-P12(626 (New) )


Submitter: Roger D. McDaniel , McDonough, GAComment on Proposal No: 12-Recommendation: Revise Article 626 as follows:

INCLUDE NEC L2025. R.doc HERE

Substantiation: The Code Making Panel 12 Chair , Tim Croushore formed a task group of Panel 12 members todevelop a comment for proposed Article 626 "Electrified Truck Parking Spaces." The task group members are RogerMcDaniel (chairman), Wiliam Anderson, Jeff Holmes , Ron Janikowski, Robert Jones , Todd Lottman , and Craig Sato.The TCC directive was followed concerning the scope and title.The TCC directive was followed regarding the rewrite of the proposed article for clarity, compliance with the NEC style

Manual , and consistency of terminology. Several additions or deletions reflect relocation for clarity.The article was rewritten to remove any requirements that are not within the scope of NFPA 70 (i. , onboard

truck/transport refrigerated units (TRU) equipm nt.)

The article was rewritten to remove any requirements that are addressed in other parts of the code. A FPN was addedto further identify what an electrified truck parking space consists of and possible locations.

The definitions included in this article were modified to exclude definitions appearing in Article 100 or that related toonboard equipment outside the scope of this article.Figures 626. 12(B)(1) and (2) were deleted per NFPA request because the NEC is not printed in color and the colored

map would be confusing to the user. The idea of including a website reference to the map was dismissed because of .NFPA requirements as well. More detailed data was retrieved and included in the fine print note following Table626. 12(B) from the HTTP://ww. usnausda.gov/hardzone/ushzmap. htmlweb site which includes the followingstatement. "Note: This publication is not copyrighted , and permission to reproduce all or any part of it is not required.The mounting height datum in 626.22(B) was revised for consistency with terminology in Section 682.2(3). Permissive

language was changed to mandatory language in 626.23 to prevent the maximum height of a connection from beingbeyond reach of 6 ft 7 in. height.Section 626.32 was revised to refer to portable cable assemblies that are provided as a part of the means to connect

the power supply equipment to the truck/trailer.Figure 626.25(B)(4)(a) Receptacle, Connector, Attachment Plug, and Inlet Configurations was removed from this

article. While the Task Group recognizes the need for standardization of configurations utilized with electrified truckparking spaces , the NEC and Code Making Panels is not the forum for establishing product standards nor in a positionto endorse proprietary, patented connection products.Panel Meeting Action: Accept in PrincipleRevise Article 626 to read as follows:

INCLUDE NEC L2025 CA HERE

Panel Statement: The work on Article 626 was a result of a balanced task group assigned by the chairman of CMP-to address the issue of electrified truck parking spaces.This article reflects input from representatives of all facets of the electrical industry. The task group also used expertisefrom other representatives of the truck parking space industry and technology.CMP- 12 recommends the that the TCC consider the following for correlation with the addition of this new article:1. Add "Electrified Truck Parking Space" and "Article 626" to Table 210.2 Specific-Purpose Branch Circuits.


Article 626. Electrifed Parking Space Equipment with new comments shown TG Draft from committee 12/04/2006

ARTICLE 626Electrifed Truck Parking Spaces

I. GENERA

626.1 Scope. The provisions of this aricle cover the electrcal conductors and equipmentexternal to the trck or transport refrgerated unt that connect trcks or transport refrgeratedunts to a supply of electrcity, and the installation of equipment and devices related to electrcalinstallations within an electrfied trck parking space.

626.2 Definitions.

Cable Management System. An apparatus designed to control and organze unused lengths ofcable or cord at electrified trck parking spaces.

Cord Connector. A device which, by inserting it into a trck flanged surface inlet, establishesan electrcal connection to the truck for the purose of providing power for the on-board electrcloads and shall be pennitted to provide . a means for infonnation exchange. This device is par ofthe trck coupler.

Disconnecting Means, Parking Space. The necessar equipment usually consisting of a circuitbreaker or switch and fuses, and their accessories, located near the point of entrance of supplyconductors in an electrfied trck parking space and intended to constitute the means of cutoff forthe supply to that trck.

Electrifed Truck Parking Space. A truck parking space that has been provided with anelectrcal system that allows trck operators to connect their vehicles while stopped, and use off-board power sources in order to operate on-board systems such as air conditioning, heating andappliances, without any engine idling.

FPN: An electrified trck parking space also includes dedicated parking areas for heavyduty trcks at travel plazas, warehouses, shipper and consignee yards, depot facilities andborder crossings. It does not include areas such as the shoulders of highway ramps andaccess roads, camping and recreational vehicle sites, residential and commercial parkingareas used for automotive parking or other areas where ac power is provided solely forthe purose of connecting automotive and other light electrcal loads, such as engineblock heaters, and at private residences.

Electrifed Truck Parking Space Wiring Systems. All ofthe electrical wiring, equipment, andappurenances related to electrcal installations within an electrfied trck parking spaceincluding the electrfied parking space supply equipment.

NEC ROC 2008/ include panel action/ Log #2025/ Page 1 of 12

Article 626. Electrified Parking Space Equipment with new comments shown TG Draft from committee 12/04/2006

Overhead Gantry. A strctue consisting of horizontal framework supported by verticalcolums spanng above electrfied trck parking spaces that supports equipment, appliancesraceway and other necessar components for the purose of supplying electrical, HV ACinternet, communcations and other services to the spaces.

Separable Power Supply Cable Assembly. A flexible cord or cable, including ungroundedgrounded, and equipment grounding conductors, provided with a cord connector, an attachmentplug and all other fittings, grommets, or devices installed for the purose of delivering energyfrom the source of electrcal supply to the trck or TRU flanged surface inlet.

Transport Refrigerated Unit (TRU). A trailer or container, with integrated cooling and / orheating, used for the purpose of maintaining the desired environment of temperatue-sensitivegoods or products.

Truck. Motor vehicle designed for the transportation of goods, services, and equipment.

Truck Coupler. A trck flanged surface inlet and mating cord connector

Truck Flanged Surface Inlet. The device(s) on the trck into which the connector(s) is insertedproviding electrc energy and other services. This device is par of the trck coupler. For thepuroses of this article, the trck flanged surface inlet is considered to be par ofthe trck andnot par of the electrfied trck parking space supply equipment.

626.3 Other Articles. Wherever the requirements of other aricles of this Code and Aricle 626differ, the requirements of Aricle 626 shall apply. Unless electrified trck parking space wiringsystems are supported or aranged in such a maner that they canot be used in or abovelocations classified in 511.3 or 514.3 or both, they shall comply with 626.3(A) and 626.3(B) inaddition to the requirements of this aricle.

(A) Vehicle Repair and Storage Facilties. Electrfied trck parking space electrcalwiring systems located at facilities for the repair or storage of self-propelled vehicles thatuse volatile flamable liquids or flamable cases for fuel or power shall comply withAricle 511.

(B) Motor Fuel Dispensing Stations. Electrfied trck parking space electrcal wiringsystems located at or serving motor fuel dispensing stations shall comply with Aricle514.

FPN: For additional infonnation see NFP A 88A-2002, Standard for Parking Strctures andNFP A 30A-2003 , Code for Fuel Dispensing Facilties and Repair Garages.



626.4 General Requirements.

(A) Not Covered. The provisions of this aricle do not apply to that portion of otherequipment in residential, commercial or industral facilities that require electrc power fordevices used to load and unoad cargo and equipment, operate conveyors, and otherdevices on the site or trck.

(B) Distribution System Voltages. Unless other voltages are specified, the nominal acsystem voltages of 120, 120/240, 208Y/120, 240, or 480Y/277 , shall be used to supplyequipment covered by this aricle.

(C) Connection to Wiring System. The provisions of this aricle shall apply to theelectrified trck parking space supply equipment intended for connection to a wiringsystem as defined in 626. 1 O(A).

(D) Illumination. Ilumination shall be provided to facilitate safe use of electrfied trckparking spaces.

II. Electrifed Truck Parking Space Electrical Wiring Systems

626.10 Branch Circuits. Electrfied trck parking space single phase branch circuits shall bederived from a 208Y/120 volt 3-phase system or a 120/240 volt single-phase system.

Exception: A 120-volt distribution system shall be permitted to supply existing electrifed truckparking spaces.

626.11 Feeder and Service Load Calculations.

(A) Parking Space Load. The calculated load of a feeder or service shall not be less thanthe sum of the loads on the branch circuits. Electrcal service and feeders shall becalculated on the basis of not less than 11 kV A per electrfied trck parking space.

(B) Demand Factors. Electrified truck parking space electrcal wirig system demandfactors shall be based upon the climatic temperatue zone in which the equipment isinstalled. The demand factors set forth in Table 626. 11 (B) shall be the mimumallowable demand factors that shall be permitted in calculating load for service andfeeders. No demand factor shall be allowed for any other load, except as provided inthis Aricle.


Article 626. Electrified Parking Space Equipment with new comments shown TG Draft from commitee 12/04/2006

Table 626.11(B) Demand Factors for Services and Feeders

Demand Factor(percent)

70%67%62%59%57%55%51%47%43%39%

m..............................,

34%29%

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21%20%

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20%20%21%23%24%

Climatic TemperatureZone

(USDA HardinessZone)

See Note

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lOalOb

Note:

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The climatic temperatue zones shown in Table 626. 11 (B) correlate with those found on theUSDA Plant Hardiness Zone Map," and the climatic temperatue zone selected for use with

the table shall be determined through the use of this map based on the installation location.

FPN: The US Deparent of Agrcultue (USDA) has developed a commonly used "PlantHardiness Zone" map that is publicly available. The map provides guidance for determinngthe Climatic Temperatue Zone. Data indicates that the HV AC has the highest powerrequirement in cold climates, with the heating demand representing the greatest load, which intu is dependent on outside temperatue. In very war climates, where no heating load isnecessary, the cooling load increases as the outdoor temperatue rises.



(C) Two or More Electrifed Truck Parking Spaces. Where the electrfied trckparking space wiring system is in a location that serves two or more electrfied trckparking spaces, the equipment for each space shall comply with 626. 11(A) and thecalculated load shall be computed on the basis of each parking space.

(D) Conductor Rating. Truck space branch circuit conductors shall have an ampacitynot less than the loads supplied.

III. Electrifed Truck Parking Space Supply Equipment

626.20 Grounding.

(A) Exposed Non-Current-Carrying Metal Parts.

(1) Fixed Equipment. Exposed non-current-canng metal pars of fixedequipment, metal enclosures, and fittings that are not electrcally connected togrounded equipment shall be bonded by a continuous equipment groundingconductor ru with the circuit conductors from the service equipment or fromthe transfonner of a secondar distrbution system. Equipment groundingconductors shall be sized in accordance with 250. 122.

(2) Grounding Connections. The arangement of equipment groundingconnections shall be such that the disconnection or removal of a receptacle orother device wil not interfere with, or interrpt, the grounding continuity.

(B) Distribution System Grounding. Each distribution system shall be grounded at thetransfonner secondar in accordance with 250.30(A).

(C) Load-Side Grounding Connections. A grounding connection shall not be made toany grounded conductor on the load side of the service disconnecting means exceptin accordance with 250.30(A) for separately derived systems.

626.21 Overhead Clearances.

(A) Conductors Not Over 600 Volts. Conductors or cables of not over 600 voltsnominal, shall confonn to 225. 18 and 225. 19.

(B) Conductors Over 600 Volts. Conductors and cables over 600 volts, nominalshall confonn to 225.60 and 225.61.


Article 626. Electrified Parking Space Equipment with new comments shown TG Draft from commitee 12/04/2006

626.22 Wiring Methods and Materials.

(A) Electrifed Truck Parking Space Supply Equipment Type. The electrfiedtrck parking space supply equipment shall be provided in one of the followingfonns:

(1)

(2)

(3)

Post or Pedestal

Overhead Gantr

Raised Concrete Pad

(B) Mounting Height. Post, pedestal, and raised concrete pad types of electrfiedtrck parking space supply equipment shall be not less than 600 mm (2 ft.) aboveground or above the point identified as the prevailing highest water level mark oran equivalent benchmark based on seasonal or stonn-drven flooding from theauthority having jursdiction.

(C) Access and Working Space. All electrfied trck parking space supplyequipment shall be accessible by an unobstrcted entrance or passageway not lessthan 600 mm (2 ft.) wide and not more than 2.0 m (6 ft. 6 in.) high. Suffcientspace shall be provided and maintained about all electrical equipment to permtready and safe operation, in accordance with 110.26.

(D) Disconnecting Means. A disconnecting switch or circuit breaker shall beprovided to disconnect one or more electrfied trck parking space supplyequipment sites from a remote location. The disconnecting means shall beprovided and installed in a readily accessible location and shall be capable ofbeing locked in the open position. Portble means for adding a lock to the switchor circuit breaker shall not be pennitted as the means required to be installed atand remain with the equipment.

626.23 Overhead Gantry or Cable Management System.(A) Cable Management. Electrfied trck parking space equipment provided from

either overhead gantr or cable management systems shall utilize a pennanentlyattached power supply cable in electrfied trck parking space supply equipment.Other cable types and assemblies listed as being suitable for the puroseincluding optional hybrid communcations, signal, and optical fiber cables, shallbe pennitted.

Strain Relief. Means to prevent strain from being transmitted to the wiringtenninals shall be provided. Pennanently attached power supply cable(s) shall beprovided with a means to de-energize the cable conductors and power servicedelivery device upon exposure to strain that could result in either cable damage orseparation from the power service delivery device and exposure oflive pars.

(B)



626.24 Electrifed Truck Parking Space Supply Equipment Connection Means.

(A) General. Each trck shall be supplied from electrfied trck parking space supplyequipment through suitable extra hard service cables or cords. Each connection tothe equipment shall be by a single separable power supply cable assembly.

(B) Receptacle. All receptacles shall be listed and of the grounding type. Every trckparking space with electrcal supply shall be equipped with:

(1) Two single receptacles, each shall be 2-pole 3-wire grounding type, rated 20amperes, 125 volts, and shall be on an individual branch circuit, and

FPN: For the nonlocking-type and grounding-type 20-ampere receptacleconfiguration, see National Electrcal Manufactuers Association Standardfor Dimensions of Attachment Plugs and Receptacles ANSI/MA WD6-2002, Figure 5-20.

(2) One single receptacle 3-pole, 4-wire grounding-type, single phase ratedeither 30-amperes 208Y/120-volts or 125/250-volts. The 125/250-voltreceptacle shall be pennitted to be used on a 208Y/120-volt, single-phasecircuit.

FPN: For varous configurations of 30-ampere pin and sleeve receptaclessee ANSI/1686 Standard for Pin and Sleeve Confgurations FigueC2.9 or Par C3.

Exception: Where electrifed truck parking space supply equipment providesthe air-conditioning and comfort cooling function without requiring a direct

electrical connection at the truck, only the two receptacles identifed 626. 24(B)(1) shall be required.

(C) Disconnecting Means, Parking Space. The electrfied trck parking spacesupply equipment shall be provided with a switch or circuit breaker fordisconnecting the power supply to the electrc trck parking space. Adisconnecting means shall be provided and installed in a readily accessiblelocation and shall be capable of being locked in the open position. Portable meansfor adding a lock to the switch or circuit breaker shall not be pennitted as themeans required to be installed at and remain with the equipment.

(D) Ground-Fault Circuit-Interrupter Protection for Personnel. The electrfiedtrck parking space equipment shall be designed and constrcted such that allreceptacle outlets in 626.24 are provided with ground-fault circuit-inteITpterprotection for personnel.



626.25 Separable Power-Supply Cable Assembly.

A separable power-supply cable assembly, consisting of a power supply cord, a cordconnector, an attachment plug and intended for connection with a trck flanged surfaceinlet, shall be of a listed type. The power-supply cable assembly or assemblies shall beidentified and be of one of the following types and ratings specified herein. Cords withadapters and pigtail ends , extension cords, and similar items shall not be used.

(A) Rating(s).

(1) Twenty-Ampere Power-Supply Cable Assembly. Equipment wired with a20-ampere, 125-volt receptacle, in accordance with 626.24(B)(1), shall use alisted 20-ampere power-supply cable assembly.

Exception: It shall be permitted to use a listed separable power supply cableassembly, either hard-service or extra hard service and rated 15- amperes,125 volts for connection to an engine block heater for existing vehicles.

(2) Thirt-Ampere Power-Supply Cable Assembly. Equipment wired with a30-ampere, 208Y/120-volt or 125/250-volt receptacle, in accordance with626.24(B)(2) shall use a listed 30-ampere main power-supply cable assembly.

(B) Power Supply Cord.

(1) Conductors. The cord shall be a listed type with three or four conductors, forsingle phase connection, one of which shall be identified in accordance with400.23.

Exception: It shall be permitted to use a separate listed three conductor separablepower supply cable assembly, having one of which shall be identifed inaccordance with 400. , and rated 15 amperes, 125-volts for connection to anengine block heater for existing vehicles.

(2) Cord. Extra-hard usage flexible cords and cables rated not less than 90(194 P), 600 volts; listed for both wet locations and sunlight resistance; andhaving an outer jacket rated to be resistant to temperatue extremes, oil, gasolineozone, abrasion, acids, and chemicals shall be pennitted where flexibility isnecessar between the electrfied trck parking space supply equipment and thepanel board and flanged surface inlet(s) on the trck.

Exception: Cords for the separable power supply cable assembly for 15 and 20ampere connections shall be permitted to be a hard-service type.

NEC ROC 2008/ include panel action! Log #2025! Page 8 of 12

Article 626. E/ectrifed Parking Space Equipment with new comments shown TG Draft from commitee 12/04/2006

(3) Cord Overall Length. The exposed cord length shall be measured from the faceof the attachment plug to the point of entrance to the trck or the face of theflanged surface inlet or to the point where the cord enters the trck. The overalllength of the cable shall not exceed 7.5 m (25 ft) unless equipped with a cablemanagement system that is listed as suitable for the purose.

(4) Attachment Plug. The attachment plug( s) shall be listed, by itself or as par of acord set, for the purose and shall be molded to or installed on the flexible cord sothat it is secured tightly to the cord at the point where the cord enters theattachment plug. If a right-angle cap is used, the configuation shall be oriented sothat the grounding member is farhest from the cord. Where a flexible cord isprovided, the attachment plug shall comply with 250. 138(A).

(a) Connection to a 20-Ampere Receptacle. A separable power supply cableassembly for connection to a trck flanged surface inlet, rated at 20 amperesshall have a nonlocking-type attachment plug that shall be 2-pole, 3-wiregrounding type, rated 20 amperes, 125 volts and intended for use with the 20-ampere, 125-volt receptacle.

Exception: A separable power supply cable assembly, rated 15 amperesprovided for the connection of an engine block heater, only, shall have anattachment plug that shall be 2-pole, 3-wire, grounding type, rated 15amperes 125 volts.

FPN: For nonlocking- and grounding-type 15- or 20-ampere plug andreceptacle configuations , see National Electrcal Manufactuers AssociationStandard for Dimensions of Attachment Plugs and ReceptaclesANSIIMA WD6-2002, Figue 5- 15 or 5-20.

(b) Connection to a 30-Ampere Receptacle. A separable power supply cableassembly for connection to a trck flanged surface inlet, rated at 30 amperesshall have an attachment plug that shall be 3-pole, 4-wire, grounding typerated 30-amperes, 208Y/120-volts or 125/250-volts, and intended for use withthe receptacle in accordance with 626.24(B)(2). The 125/250-volt attachmentplug shall be permitted to be used on a 208Y/120-volt, single-phase circuit.

FPN: For varous configuations of 30-ampere pin and sleeve plugs, seeANS1f1686 Standard for Pin and Sleeve Configurations Figue C2. 1O or

Par C3.



(5) Cord Connector. The cord connector for a separable power supply cableassembly, as specified in 626.25(A) (1), shall be a 2-pole, 3-wire grounding typerated 20 amperes, 125 volts. The cord connector for a separable power supplycable assembly, as specified in 626.25(A)(2), shall be a 3-pole, 4-wire groundingtype, rated 30-amperes, 208Y/120-volts or 125/250-volts. The 125/250-volt cordconnector shall be permitted to be used on a 208Y/120-volt, single-phase circuit.

Exception: The cord connector for a separable power supply cable assembly,rated 15 amperes, provided for the connection of an engine block heater forexisting vehicles, shall have an attachment plug that shall be 2-pole, 3-wiregrounding type, rated 15 amperes 125 volts.

FPN: For varous configuations of 30-ampere cord connectors seeANSI/1686 Standard for Pin and Sleeve Confgurations Figue C2.9 or ParC3.

626. Loss of Primary Power. Means shall be provided such that, upon loss of voltage fromthe utility or other electric supply system(s), energy canot be back-fed through thetruck and the trck supply equipment to the electrfied trck parking space wiringsystem unless permitted by 626.27.

626.27 Interactive Systems. Electrfied trck parking space supply equipment and other pars ofa system, either on-board or off-board the vehicle, that are identified for and intended tobe interconnected to a vehicle and also serve as an optional standby system or an electrcpower production source or provide for bi-directional power feed shall be listed suitable for that purose. When used as an optional standby system, the requirements ofAricle 702 shall apply, and when used as an electrc power production source, therequirements of Aricle 705 shall apply.

IV. Transport Refrigerated Units (TRU)

626.30 Transport Refrigerated Units. Electrfied trck parking spaces intended to supplyTransport Refrgerated Units shall include an individual branch circuit and receptacle foroperation of the refrgeration/eating unts. The receptacle associated with the TransportRefrgerated Units shall be provided in addition to the receptacles mentioned in626.24(B).

(A) Branch Circuits. TRU spaces shall be supplied from 208-volt 3-phase or 480-volt 3-phase branch circuits and with an equipment grounding conductor in accordance with250. 118

(B) Electrifed Truck Parking Space Supply Equipment. The electrfied trck parkigspace supply equipment, or portion thereof, providing electrcal power for theoperation ofTRU' s shall be independent of the loads in Par III.


Article 626. Electrifed Parking Space Equipment with new comments shown TG Draft from commitee 12/04/2006

626.31 Disconnecting Means and Receptacles.

(A) Disconnecting Means. Disconnecting means shall be provided to isolate eachrefrgerated unt from its supply connection. A disconnecting means shall beprovided and installed in a readily accessible location and shall be capable ofbeing locked in the open position. Portble means for adding a lock to the switchor circuit breaker shall not be permitted as the means required to be installed atand remain with the equipment.

(B) Location. The disconnecting means shall be readily accessible, located not more than762 mm (30 in.) from the receptacle it controls, and shall be located in the supplycircuit ahead of the receptacle. Circuit breakers or switches located in power outletscomplying with this section shall be permitted as the disconnecting means.

(C) Receptacles. All receptacles shall be listed and of the grounding type. Every electrfiedtrck parking space intended to provide an electrical supply for transport refrgeratedunts shall be equipped with one or both of the following:

(1)

(2)

a 30 ampere, 480-volt, 3-phase, 3 pole, 4 wire receptacle

a 60 ampere, 208-volt, 3-phase, 3 pole, 4 wire receptacle

FPN: Complete details of the 30-ampere pin and sleeve receptacle configuation forrefrgerated containers (transport refrgerated unts) can be found in ANSI!1686Standard for Pin and Sleeve Confgurations Figue C2.11. For varousconfiguations of 60-ampere pin and sleeve receptacles, see ANSI!1686 Standardfor Pin and Sleeve Configurations.



626. Separable Power Supply Cable Assembly. A separable power supply cableassembly, consisting of a cord with an attachment plug and cord connector, shall be ofone of the following types and rating specified below. Cords with adapters and pigtailends, extension cords, and similar items shall not be used.

(A) Rating(s). The power supply cable assembly shall be listed and rated:

(1) 30 ampere, 480-volt, 3-phase, or

(2) 60 ampere, 208-volt, 3-phase

(B) Cord Assemblies. The cord shall be a listed tye with four conductors, for 3-phaseconnection, one of which shall be identified in accordance with 400.23 for use as thegrounding conductor. Extra-hard usage cables rated not less than 90 C (194 F), 600volts, listed for both wet locations and sunight resistance; and having an outer jacketrated to be resistant to temperatue extremes, oil, gasoline, ozone, abrasion, acids, andchemicals, shall be permitted where flexibility is necessary between the electrfiedtrck parking space supply equipment and the inlet(s) on the TRU.

(C) Attachment Plug(s) and Cord Connector(s). Where a flexible cord is provided withan attachment plug and cord connector, they shall comply with 250. 138(A). Theattachment plug(s) and cord connector(s) shall be listed, by itself or as par of thepower supply cable assembly, for the purose and shall be molded to or installed onthe flexible cord so that it is secured tightly to the cord at the point where the cordenters the attachment plug or cord connector. If a right-angle cap is used, the

configuation shall be oriented so that the grounding member is farthest from the cord.An attachment plug and cord connector for the connection of a trck or trailer shall beeither:

(1) Rated 30 ampere, 480-volt, 3-phase, 3pole, 4 wire and intended for use with a 30ampere 480-volt, 3-phase, 3 pole 4 wire receptacles and inlets respectively, or

(2) Rated 60 ampere, 208-volt, 3-phase, 3 pole, 4 wire and intended for use with a 60-ampere, 208-volt, 3-phase, 3 pole, 4 wire receptacles and inlets respectively

FPN: Complete details of the 30-ampere pin and sleeve attachment plug andcord connector configuations for refrgerated containers (transport refrgeratedunts) can be found in ANSIl1686 Standard for Pin and SleeveConfigurations Figues C2. 12 and C2. 11. For varous configuations of 60-

ampere pin and sleeve attachment plugs and cord connectors seeANSII 1686 Standard for Pin and Sleeve Confgurations.


Report on Commcnts - June 2007 NFP A 702. Add "Electrified Truck Parking Space" and "Article 626" to Table 220.3 Additional Load Calculation References.3. Add "Electrified Truck Parking Space" and "Article 626" to Table 250.3 Additional Grounding Requirements.


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Log #1728 NEC-P12 Final Action: Reject

Submitter: Brian Sisco, Southern California EdisonComment on Proposal No: 12-Recommendation: Retain the original text.Substantiation: The considerations and substantiation for this article were based on the use of this equipment by theheavy-duty truck industry and truck drivers who are required to stop for a rest period. The revised definition implies thatother motor vehicles and the general public could use the equipment. Other potential users of this equipment , as impliedby the modified definition , may raise additional concerns with regard to their skills in connecting their vehicles to thisequipment, and the connection means , including various types of adapters, they may use in utilizing the electrified truckparking space equipment. This article was intended to serve the only commercially feasible user of electrified truckparking spaces at this time , that is , a heavy-duty truck as included in the original definition.Panel Meeting Action: Reject

Panel Statement: See panel action and statement on Comment 12-42.



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Log #2307 NEC-P12 Final Action: Accept in Principle

Submitter: Brian Rock , Hubbell IncorporatedComment on Proposal No: 12-Recommendation: Revise text to read as follows:

626.3 Other Articles. Wherever the requirements of articles of this Code and Article 626 differ, the requirements ofArticle 626 shall apply. Unless electrified truck parkinq space wirinq svstems are supported or arranqed in such amanner that they cannot be used in or above locations classified in 511.3 or 514.3 or both. they shall complv with626.3(A) and 626.3(B) in addition to the requirements of this article.(A) Vehicle Repair and Storaqe Facilties. Electrified parkinq space electrical wirinq systems located at facilities for

the repair or storaqe of self-propelled vehicles that use volatile flammable liquids or flammable qases for fuel or powershall complv with Article 511.(B) Motor Fuel Dispensinq Stations. Electrified parkinq space electrical wirinq svstems located at or servinq motor

fuel dispensinq stations shall complv with Article 514.Revise text to read as follows:FPN: For additional information. see NFPA 88A-2002. Standard for Parkina Structures.

and NFPA 30A-2003. Code for Fue/ Disoensina Faci/ities and Reoair Garaaes.Substantiation: Requirements of Article 626 as proposed are intended solely for ordinary locations. Electrified truckparking spaces , however, may be located adjacent to Special Occupancies for fuel dispensing and for vehicle repair andstorage; these occupancies are frequently hazardous (classified) locations. As re-titled , Article 626 might bemisconstrued as being a Special Occupancy rather than Special Equipment. Consequently, unrevised 626.3 could bemisconstrued to mean that specific requirements of Article 626 might also be sufficient for hazardous (classified)locations as well and that Article 626 incorrectly takes precedence over requirements of Articles 511 and 514 in thoseclassified locations. Arcing devices such as switchgear , switches, plugs , outlets , etc. , shouldn t be used in hazardous(classified) locations , unless evaluated and Listed as suitable for such locations. Furthermore , Articles 511 and 514have requirements for wiring and equipment installed above , as well as in , Class I locations. Revision in accordancewith this Comment removes that ambiguity. 626. 3(A) and 626.3(B) for electrical systems serving trucks are similar toestablished requirements 555.22 and 555. , respectively, for electrical systems serving boats.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.


Report on Comments - June 2007 NFP A 70"e'

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12-47 Log #1735 NEC-P12(626. 10 and 626. 12)


Submitter: Adam McCall , IdleAire Technologies CorporationComment on Proposal No: 12-Recommendation: Retain the original text.Substantiation: In the substantiation provided with the original proposal , it was indicated that additional data fromvarious truckstops , where electrified parking space equipment has been installed , would continue to be collected and beavailable for further review.The additional data continues to show the Electrified Truck Parking Spaces (ETPS) will not be able to provide sufficient

heating and cooling capacity if only two single-phase , 120Vac/20A circuits were provided to a parked truck. This can beclearly seen through the data I have submitted. The compilation of over 1 millon hours of service has proven that thecurrent proposed article is correct in suggesting that the required capacity to be delivered to a parked truck will requirethe 30A 208Vac circuit.We believe there are two commercially-supported means for justifying this statement - by use of the existing ETPS field

data and by reviewing the design capacity for some of the most popular on-board auxiliary power units. The existingETPS field data continues to show the average demand varying with t he outdoor air temperature , as listed in theDemand Load graph provided in the original substantiation. This graph provided a design basis for the average total siteload given the most probable occupancy of an ETPS user and the duty cycles present during the various ambientconditions.

It should be noted that the peak HVAC load present is greater than these averages and thus should be consideredwhen evaluating the requirements for input power loads. The field data shows that in almost all weather conditions , aparked truck could require loads that exceed the available power capacity of a single-phase 20Al120Vac (2400W)branch circuit.

Furthermore , the market today for on-board systems , referred to herein as auxiliary power units (APUs), also suggeststhat the design requirements have moved well beyond the 2400W range. A quick look at five of the most commonlyused APUs shows that the average cooling capacity for APU air conditioning units is 17 200 Btu/Hr, which correspondsto 42A (i 120Vac. This value far exceeds the single 120Vac/20A circuit rating and can only be provided by way of theproposed single-phase 30A 208Vac circuit.

Note: Supporting material is available for review at NFPA Headquarters.Panel Meeting Action: Reject

Panel Statement: The panel rejects the original wording. It does not provide clarity in accordance with the NEC StyleManual.


Report on Comments -- June 2007 NFP A 70

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12-48 Log #2344 NEC-P12(626.20.

Final Action: Accept in Principle in Part

Submitter: Jeff Kim, Shurepower , LLC

Comment on Proposal No: 12-Recommendation: Revise text to read as follows:B. Type Receptacles Provided. All receptacles shall be of the grounding type. A IIlelJl ill lUll I v f 1I1i t"" I t:l.t:jJ tel vlt: I'el il Lt:

jJ,vv iJt:. Every truck parking space with electrical supply shall be equipped with:(1) Two 20-ampere, 125-volt single receptacles , NEMA type 5-20R , andFPN: Complete details of the 15-or 20-ampere plug and receptacle configuration can be found in the National

Electrica I M anufactu rersAssociation StandardforD imensionsofAttach mentPI ugsa nd Receptacles, AN S I/N EMA WD6-2002Figure 520.

(2) Ollt: 30-elllljJt:' t:, 120/208- , 3- jJvlt:, 4- ;1 t: I t:l.t:jJtelvlt:.

FPt . CVllljJldt: Jdel ib vi 1I,t: 30-elllljJt:lt: fJlu ellIJ It:l.t:jJtelvlt: l.vil uldtivlIl.dli Lt: fvulIJ ill li,t: 3lelliJelIJ fVI Pill ellI31t:t:vt: CVll u'dl;vlI , UL 1080, CUll u'dl;vlI t:divlI , Pell!: C2. 10 VI C3.

Substantiation: If power for TRUs is to be supplied there may be 4 or more receptacles for each truck parking space.All currently available trucks with shore power connections use the 120-volt, type 5-20R or 5- 15R receptacles. There

is currently nOTeason to require a 120/208-volt connection. This requirement will only increase the overall cost of theinfrastructure and could slow growth or this industry. It should be up to technology provider to decide if the thirdreceptacle is necessary and will meet the needs of their customers. The higher amp connection may also encouragehigher energy consumption. Future load requirements could be reduced with the use of energy management systemsand insulation of the cab envelope.Panel Meetirig Action: Accept in Principle in PartPanel Statement: The panel accepts in principle the removal of the maximium number of receptacles. See panelaction on Comment 12-44 which meets the intent of the submitter.The panel does not accept the recommendation for the removal of the 30-ampere receptacle. The substantiation doesnot allow for future 30-ampere configurations.



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12-49 Log #2350 NEC-P12(626.20.


Submitter: Jeff Kim , Shurepower , LLC

Comment on Proposal No: 12-Recommendation: Revise text to read as follows:

D. Switch-Rated or Interlocked Receptacles. Each receptacle provided by the electrified parking space supplyequipment shall be either a switch rated receptacle- plug combination, include an interlocked receptacle with anassociated switching device of an interlocking type , or provided with an equivalent means to prevent connection ordisconnection under load. The switching device shall be rated to close- into and withstand short circuit fault currents of atleast 35 kA.The switch rated receptacle-plug combination , the interlocked plug and receptacle combination , or other means

provided shall ensure that the user has no access to live parts.Exception: NEMA tvpe 5-20R and 5- 15R.

Substantiation: NEMA type 5-15R and 5-20 receptacles are not interlocked , therefore , they should not be required tohave an interlock.Panel Meeting Action: Accept in PrinciplePanel Statement: The panel has removed the requirement for interlocking on any types of receptacles. See panelaction on Comment 12-44.However , the panel does not agree with the submitter s substantiation that the limitation for interlocking be limited toNEMA Type 5-20R and 5-15R configuration receptacles. These configurations can be interlockable.



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12-50 Log #2356 NEC-P12(626.28)


Submitter: Brian Rock , Hubbell IncorporatedComment on Proposal No: 12-Recommendation: (Section numbering in this Comment replaces 626.28(8)" from the ROP Panel Meeting Action with626. 24(B)" to be used in the CP12 Public Comment renumbering developed by the CP12 Ad Hoc Task Group on nevI'

Artic/e 626. Figure 626.30(C) is numbered in accordance with the ROP Panel Meeting Action and may possibly beshown as Figure 626.25(8)(4)(a) in the CP12 Public Comment renumbering developed by the CP12 Ad Hoc TaskGroup on new Artic/e 626. )

De/ete Figure 626.30(C) for Receptac/e, Connector, Attachment Plug and Inlet Configurations62 626. Means for Connecting to Electrified Truck Parking Space Supply Equipment.(626.24(A) in-between)(B) Ty Receptacles Provided NCMA CUII Fi!:UlcttiulI" . All receptacles shall be of the grounding type. A II Ict" i'IlUII I

f LlII t:t" I t:\"t:fJLct dt:.. ..I,ct ll Lt: fJl vv iJt: Every truck parking space with electric supply shall be provided with:(1) Two 20-ctlllfJt:1 t: , 12S- vvIL, single receptacles . each shall be 2-pole. 3-wire qroundinq tvpe. rated 20 amperes. 125

volts \.vll fvl II l ill!: lv LI,t: \.vll fi\:UI ctLivlI.. ..1,vvVI ill Fi\:ul t: 626. 30(C) v it:vv (ct), NEMA IYfJt: :J-20R, andFPN: For CUlllfJldt: Jdel ib v f LI,t: 1:J- VI nonlockinq- and qroundinq-tvpe 20-ampere fJlu\: ellI receptacle configuration

see \.elil Lt: fuUlIJ i,l the National Electrical Manufacturers Association Standard for Dimensions of Attachment Plugs andReceptacles , ANSI/NEMA WD6-2002, Figure 5-20.(2) One sinqle receptacle. 3-pole. 4-wire qroundinq type. sinqle-phase rated either 30 amperes. 208Y/120 volts or

125/250 volts 30 ellllfJt:It: , 120/208-vull , 3- fJult: , 4-vvi,t: ..ill\:lt: 1t:\"t:fJLeldt: \.vll fu, II lill\: Lv LI't: \.vll fi\:ulellivlI.. ill Fi\:ult:020.30(C) vit:vv (L) VI (\") The 125/250-volt receptacle shall be permitted to be used on a 208Y/120-volt. sinqle-phaseci rcu it.

FPN 1: For various confiqurations CVlllfJldt: Jdel of th 30-ampere pt Qi and sleeve receptacle,? \.Vll fi\:UI elLivl'

see \.elil Lt: fVUllJ i,l LI,t: ANSI/UL 1686. Standard for Pin and Sleeve Configurations UL 1080 , Pel I b Fiqure e2 C2.Part C3.tPr 2. 3t:t: ti\:ul t: 020.30(C) fVI Jdel ib I t:!:ell Jill\: I t:\"t:fJlel\"lt: IYfJt:...

Exception: Where electrified truck parking space supply equipment provides the air-conditioning and comfort coolingfunction without requiring a direct electrical connection at the truck , only the two receptacles identified in 620.21 (B)( 1)626.24(8)(1) ne shall be fJl vv iJt: required

FPN 2: For Transport Refrigerated Units (TRU), see Part \f

Substantiation: Mandatory specification of a proprietary, patented , closed- license receptacle and plug configurationviolates "GUIDELINE ON REFERENCES IN NFPA DOCUMENTS TO PROPRIETARY PRODUCTS AND SERVICES"in the NFPA Committee Offcers Guide.The configuration for the 20-ampere receptacle is a de facto standard via the widespread usage of the compatible

NEMA 5- 15 inlet for truck engine block heaters. The specific configuration for that 20-ampere receptacle is documenteddimensionally in the Standard for Dimensions of Attachment Plugs and Receptacles , ANSI/NEMA WD6. The FPNdirects the reader to the application-specific reference for this dedicated configuration.

Presently, there is no installed base of 30-ampere receptacles for truck applications. No accepted standardsorganization representing users has adopted the depicted configurations. NFPA should not be put in the position ofbeing the sole standards-setting body determining which eligible receptacle and plug configurations should be permittedor excluded.

Furthermore , UL has indicated that the depicted configuration for the switch-rated 208Y/120-volt device is not amongthose in ANSI/UL 1686 and will only be considered under "new business" upon issuance of the Third Edition afterpublication of the 2008 NECCI. UL also indicates there is no certainty any "new business" proposal wil be adopted intothe new edition.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.


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J!.12-51 Log #2259 NEC-P12(626.28(D))


Submitter: Michael Beanland, Vancouver , WA

Comment on Proposal No: 12-Recommendation: Add (3) One 30-ampere 125/250-volt 3-pole , 4-wire, grounding receptacle conforming to theconfiguration shown in Figure 626.30.Substantiation: Section 626.30(A)(4)(b) includes the use of a 30-ampere 125/250-volt plug, however, 626.28(D)(2)does not allow installation of the receptacle.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.



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12-52 Log #2261 NEC-P12(626.28(D)) .


Submitter: Michael Beanland , Vancouver , WAComment on Proposal No: 12-Recommendation: Receptacles Provided - NEMA Configurations. All receptacles shall be of the grounding type. -A111c1A ;"IUII' u r 1I" "''' I "'v"'l- lc1vb, " 1'c1l1u,, 1- iJt:J. C very truck parking space with electrical supply may sh be equippedwith:Substantiation: This section is in conflct with the requirements for TRU powering (626.38). If both TRU and cabpowering (626.32) is to be implemented, more than three receptacles may be required. If universal TRU and cabpowering is offered , 480-volt, 208-volt , 208Y/120-volt 2-phase , 125/250V, and 120-volt may all be needed at eachpedestal. If such an installation is properly designed, there is no safety issue with having more than 3 receptacles. Thelimit of 3 receptacles cannot be justified.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.


Report on Comments - June 2007 NFP A 70c, ",'

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12-53 Log #1723 NEC-P12(626.30(4)(a) and Figure 626.30(c))


Submitter: Brian Sisco , Southern California EdisonComment on Proposal No: 12-Recommendation: Retain the original text.Substantiation: In response to comment by Mr. T. Lottmann (NEMA):The proposed article included a choice of two possible means of connection (i.e. , receptacle , plug, and connector) for

the 30 ampere , 120/208 volt wiring devices. The article did not limit this means of connection to a single proprietaryconfiguration.The article provides for two means of safely connecting and disconnecting devices that are carrying a load. One is to

interlock the receptacle with a separate switching device; the other is to incorporate the switch into the plug andreceptacle. Both are commonly used throughout industry and both provide the desired level of safety for this application.Allowing both makes the code open to various technologies and provides equipment suppliers, truckstop operators andusers the flexibility of using either of the technologies commonly used today.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.


Report on Comments - June 2007 NFP A 70F'''-''

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12-54 Log #2260 NEC-P12( 626.30(A)(2))


Submitter: Michael Beanland , Vancouver , WA

Comment on Proposal No: 12-Recommendation: Revise text to read as follows:Trucks wired with a 30-ampere 120/208-volt or 125/250-volt truck inlet , in accordance...

Substantiation: 626.30(A)(4)(b) permits the use of 125/250-volt connections. 626.30(A)(1)(2) does not permit125/250-volt connections. Wording must be added to correct this issue.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12-44, which meets the intent of the submitter.



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12-55 Log #1727 NEC-P12(626.30(F))


Submitter: Brian Sisco , Southern California EdisonComment on Proposal No: 12-Recommendation: Retain the original text.Substantiation: The text corresponding to the (cord) connector appears to have been deleted in error. The "cordconnector" is a part of the separable power supply cable assembly and should be included in this article.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.


Report on Comments - June 20070 '"

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12-56 Log #2331 NEC-P12(626.40(E))


Submitter: Brian Rock , Hubbell IncorporatedComment on Proposal No: 12-Recommendation: (Section numbering in this Comment replaces "626.40(E)" from the ROP Panel Meeting Actionwith 626. 31(D)"to be used in the CP12 Public Comment renumbering developed by the CP12 Ad Hoc Task Group onnew Article 626.)

Revise text and add FPN to 626. 31(D).62 626. Disconnecting Means and Branch-Circuit Protective Equipment

(E (Q NEMA CUllfiYUldLiuli Receptacle ReQuirements T YfJt: Rt:l,t:pLdl,lt:", PI uv iJt:J . All receptacles shall be of thegrounding type. Every electrified truck parking space intended to provide an electrical supply for transport refrigeratedunits shall be equipped with either a:(1) 30-ampere , 480-volt, 3-phase receptacle, or(2) 60-ampere , 208-volt , 3-phase receptacle.FPN: Complete details of the 30-ampere pin and sleeve receptacle confiQuration for refrioerated containers (transport

refrioerated units) can be found in ANSI/UL 1686. Standard for Pin and Sleeve Confiaurations. Fioure C2. 11. For

various confiourations of 60-ampere pin and sleeve receptacles. see ANSI/UL 1686. Standard for Pin and SleeveConfiaurations.Substantiation: The configuration for the 30-ampere receptacles , attachment plugs , cord connectors and inlets isalready American- and internationally-standardized specific to the refrigerated container (transport refrigerated unit)application. These receptacles, attachment plugs , cord connectors and inlets are not bladed NEMA configurations(ANSI/NEMA WD6), so the indication of "NEMA Configuration" should be deleted. The specific configuration for that30-ampere receptacle is documented dimensionally in the ANSI/UL Standard for Pin and Sleeve ConfigurationsANSI/UL 1686 , in Figure C2. 11 for outlet devices (receptacles and cord connectors). The FPN directs the reader to theapplication-specific reference for this dedicated configuration.

Presently, there is no standardized refrigerated container usage at either 60 amperes or at 208 volts. Consequently,for this application , there is no standardized configuration for receptacles , attachment plugs , cord connectors and inlets.The FPN for the 60-ampere configuration is purely an informative reference , without prejudice or endorsement, to anumber of potentially eligible pin and sleeve configuration schemes that could serve the purpose.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.



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12-57 Log #2336 NEC-P12(626.42 , 626.42(8) )


Submitter: Brian Rock , Hubbell IncorporatedComment on Proposal No: 12-Recommendation: (Section numbering in this Comment replaces 626.42" and 626.42(8)" from the ROP PanelMeeting Action with "626. 32"and 626. 32(C)" to be used in the CP12 Public Comment renumbering developed by theCP12 Ad Hoc Task Group on new Article 626.JRevise wording to comply with TCC directive and add FPN to 626.32(C). NOTE: 626.32(C) wording differs from thatdeveloped by the CP12 Ad Hoc Task Group.

62 626. Power Supply Cable Assembly. 'v"v'l",,, 6 power supply cable assembly, consisting of a cord withan attachment plug and a cord connector. i I-luv iJ",J , il shall lJ", vv i,,,J Ji,,,dly Iu II ''' fJClll dlJUCI, J lJ Clil ClfJfJIUV",J vvi, ill\,

11I", II,uJ. TI,,, dICl,-I"I","1 fJ lu\, 1'CllIlJ", u f CI bl",J IYfJ"" TI,,, fJuvv"" ufJfJ ly '-CllJl", ""lI lJly UI CI ""lIlJli", 1'Cl lIlJ", OEM

(fCldul y) ufJfJlid UI OCM UI fCldu, y ClfJfJl uv , ClIIJ be one of the following types and rating specified herein. Cords withadapters and pigtail ends, extension cords , and similar items shall not be ClUCld ,,,J Iu, fJluv iJ",J u, ifJfJ",J vv ill, CI t, u

used(626. 32(A) and 626. 32(8) in-betweenjtB LQ Listed Attachment Plug (s) and Cord Connector(s). Where a flexible cord is provided ill, Clil ",yu ifJlI,,,"1

\,l uUIIJi,l\, ,-uliJudul ClIIJ "'yuifJfJ",J with an attachment plug and a cord connector. lI,,, ClllCld "",,"I fJ lu\, thev shallcomply with 250. 138(A) ClI,J 2::0. 138(8) . An attachment plug and cord connector for connection of a truck or trailer shallbe either:

(1) rated 30-ampere, 480-volt tl" "'''- l,CI '' 3-phase. and intended for use with a 3D-ampere. 480-volt, II " "'''- fJl,CI

phase receptacles and inlets. respectivelv , or(2) rated 60-ampere, 208-volt, II " "'''- l,CI '' 3- phase. and intended for use with a 50-ampere. 208-volt, II " "'''- fJl,CI

3-phase receptacles and inlets. respectivelvFPN: Complete details of the 30-ampere pin and sleeve attachment pluq and cord connector confiqurations for

refriqerated containers (transport refriqerated units) can be found in ANSI/UL 1686. Standard for Pin and SleeveConfiaurations. Fiqures C2. 12 and C2. 11. For various confiqurations of 60-ampere pin and sleeve attachment pluq andcord connectors. see ANSI/UL 1686. Standard for Pin and Sleeve Confiaurations.The attachment plug(s) and cord connector(s) shall be listed, by itself themselves or as part of the power supply cable

assembly, for the purpose and shall be molded to or installed on the flexible cord so that it is they are secured tightly tothe cord at the point where the cord enters the attachment plug or cord connector. If a right-angle cap attachment plugor cord connector is used , the configuration shall be oriented so that the grounding member contact is farthest from thecord.Substantiation: Per TCC action , the Article is to cover the electrical equipment external to the truck or transportrefrigerated unit. Consequently, the cord connector must be defined since the power supply cable assembly must be acord set consisting of an attachment plug, flexible cable and cord connector rather than a power supply cord consistingof an attachment plug and terminated free end of cable.The configuration for the 30-ampere receptacles , attachment plugs , cord connectors and inlets is already American-

and internationally-standardized specific to the refrigerated container (transport refrigerated unit) application. Thesereceptacles , attachment plugs , cord connectors and inlets are not bladed NEMA configurations (ANSI/NEMA WD6), sothe indication of "NEMA Configuration " should be deleted. The specific configuration for that 30-ampere receptacle isdocumented dimensionally in the ANSI/UL Standard for Pin and Sleeve Configurations, ANSI/VL 1686, in Figure C2.for plug devices (attachment plugs and inlets) and Figure C2. 11 for outlet devices (receptacles and cord connectors).The FPN directs the reader to the application-specific reference for this dedicated configuration.

Presently, there is no standardized refrigerated container usage at either 60 amperes or at 208 volts. Consequently,for this application , there is no standardized configuration for receptacles , attachment plugs, cord connectors and inlets.The FPN for the 60-ampere configuration is purely an informative reference , without prejudice or endorsement , to anumber of potentially eligible pin and sleeve configuration schemes that could serve the purpose.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action on Comment 12- , which meets the intent of the submitter.


Report on Comments - June 2007eC"""

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12-(640.

Log #544 NEC-P12 Final Action: Accept

Submitter: Richard P. Owen, City Of St. PaulComment on Proposal No: 12-Recommendation: Reject this proposal.Substantiation: This comment was written by a Task Group consisting of Stan Kaufman and Randy Ivans (Panel 16),John Mortimer (Panel 12) and Ron Maassen , Paul Casparro (Panel 3) plus Task Group Chair Richard Owen (Panel 3).The Task Group was directed by the Technical Correlating Committee to examine proposals submitted to all threePanels concerning abandoned cable and other related issues covered by the Panels.The Task Group came to consensus on the following issues and submitted comments to the Panels as appropriate:1) On the issue of abandoned cable removal , the task group agreed that only the accessible portions of abandoned

cable should be removed. To require removal of all cable could , in some cases, necessitate demolition of the buildingfinish in order to access cables that were properly fastened to the building in accordance with the rules in the variouscode articles. Furthermore , the task group agreed that the requirements for abandoned cable removal should not be inSection X.3 (Locations and Other Articles) but should be relocated into the general requirements of each article.2) The task group also agreed to recommend the addition of a new Fine Print Note to further explain the removal

requirement. This addition was thought to be necessary to address a common practice of cables that are "fished" insideexisting walls. These cables , if abandoned , can be disconnected from their junction point in a wall and pulled out of thewall without having to harm the building finish. At present, in many cases , these cables are being cut off above the walland left to drop into the wall space.

3) On the issue of "tagged for future use , the Task Group agreed that it was not necessary to require anything morethan the cable tag being "

...

of sufficient durability to withstand the environment involved. " This phrase is used in severalother places in the NEC and leaves it up to the AHJ as to what is suitable. This language does not add requirementsthat are diffcult, if not impossible , to enforce by adding unclear requirements for rodent-resistance , etc.



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12-(640.


Submitter: Allen C. Weidman , The Society of the Plastics Industry, Inc.Comment on Proposal No: 12-Recommendation: Reject this proposal.Substantiation: The Society of the Plastics Industry supports the removal of abandoned cables. One of our membercompanies is in the business of removing abandoned cables from buildings.Section 300. 11 (Securing and Supporting) requires that "Raceways, cable assemblies , boxes , cabinets , and fittings

shall be securely fastened in place. " It is not possible to remove all abandoned cables if the installation complies with300. 11 and the cables are installed behind a wall.Proposal 12-87 in one of a series of proposals submitted to panels 3 , 12 and 16.Panel 3 rejected proposals 3-147 and 3-218 with the statement:This proposed change would make it a requirement that removal of abandoned cable never damage the building finish

or compromise adjacent wiring systems or components. This expectation is unrealistic. If the building owner wants totake a ceiling down to access and remove abandoned cables , the NEC should not and cannot restrict this action. Inregard to the removal of accessible cable , the panel refers to the definition of Accessible as it applies to wiringmethods.

Panel 16 rejected proposals 16- 16- 16- 176, 16- 190, 16-258 16-323 and 16-364 with the statement:The proposed requirement presents a compliance conundrum to installers. Without access, it is impossible to remove

cables that are securely fastened without damaging the building or adjacent cables. Gaining access may sometimesrequire disassembly of part of the building. This is not the intent of the panel. The current requirement to remove onlythe accessible portion is reasonable.



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12-(640.


Submitter: Allen C. Weidman , Society of the Plastics Industry, Inc.Comment on Proposal No: 12-Recommendation: Reject this proposal.Substantiation: The Society of the Plastics Industry supports the removal of abandoned cables. One of our membercompanies is in the business of removing abandoned cables from buildings.Section 300. 11 (Securing and Supporting) requires that "Raceways, cable assemblies , boxes , cabinets , and fittings

shall be securely fastened in place. " It is not possible to remove all abandoned cables if the installation complies with300. 11 and the cables are installed behind a wall.Proposal 12-87 in one of a series of proposals submitted to panels 3, 12 and 16.Panel 3 rejected proposals 3- 147 and 3-218 with the statement:'This proposed change would make it a requirement that removal of abandoned cable never damage the building finish

or compromise adjacent wiring systems or components. This expectation is unrealistic. If the building owner wants totake a ceiling down to access and remove abandoned cables, the NEC should not and cannot restrict this action. Inregard to the removal of accessible cable , the panel refers to the definition of Accessible as it applies to wiringmethods.

Panel 16 rejected proposals 16- , 16- , 16- 176, 16-190 , 16-258 , 16-323 and 16-364 with the statement:The proposed requirement presents a compliance conundrum to installers. Without access , it is impossible to remove

cables that are securely fastened without damaging the building or adjacent cables. Gaining access may sometimesrequire disassembly of part of the building. This is not the intent of the panel. The current requirement to remove onlythe accessible portion is reasonable.




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12-61 Log #240 NEC-P12(640.3(A) and 640.6(C))


Submitter: Stanley Kaufman , CableSafe Inc.Comment on Proposal No: 12- 101

Recommendation: Accept this proposal in principle by modifying 640.6(C) as shown.(C) Abandoned Audio Distribution Cables. The accessible portion of abandoned AUdliJuild audio distribution cables

shall be removed.Substantiation: The panel action on proposal 12- 1 01 was to accept in principle with a reference to the action onproposal 12-94. Proposal 12-101 recommended moving the requirement to remove abandoned cables to a moreappropriate section. The panel action on proposal 12-94 accomplished that objective. However, the panel action on12-94 also changed the requirement from the removal of only the accessible portion of the cables to requiring theremoval of.i the cables , including those stapled to studs behind a sheetrock wall.See proposal 16-27; panel 16 in its rejection statement stated:The proposal would require all abandoned cable to be removed, irrespective of accessibility, presenting a compliance

conundrum to installers. Without access , it is impossible to remove cables that are securely fastened without damagingthe building or adjacent cables. The submitter s substantiation states: " It is not reasonable or necessary to install cablesin a manner that prevents their eventual removaL" However , the panel previously imposed additional securing andsupporting requirements by referencing 300. 11 in 800.24. Gaining access may sometimes require disassembly of part ofthe building. This is not the intent of the panel. The current requirement to remove only the accessible portion isreasonable. The submitter further proposes to add an FPN following 800.3(C) that is already contained in 800.24.Panel Meeting Action: Accept in PrinciplePanel Statement: Refer to the panel action and statement on Comment 12-67.



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12-62 Log #1433 NEC-P12(640.3(A) and 640.6(C))


Submitter: Allen C. Weidman , The Society of the Plastics Industry, Inc.Comment on Proposal No: 12-Recommendation: Modify the panel action on 640.6(C) as shown.(C) Abandoned Audio Distribution Cables. The accessible portion of abandoned AUClI,JUI,t: audio distribution cablesshall be removed.Substantiation: The Society of the Plastics Industry supports the removal of abandoned cables. One of our membercompanies is in the business of removing abandoned cables from buildings.

The current requirement for the removal of abandoned cable is in 640.3 Locations and Other Articles. It requires theremoval of onlv the accessible portion of audio distribution cables.

(A) Spread of Fire or Products of Combustion. The accessible portion of abandoned audio distribution cables shall beremoved. See 300.21.Proposals 12-101 and 12-102 recommended moving the requirement to remove abandoned cables to a more

appropriate section. The panel action on proposal 12-94 accomplished that objective.However, the panel action on 12-94 also changed the requirement from the removal of only the accessible portion of

the cables to requiring the removal of.i the cables, including those that are inaccessible.Section 640.9(A)(3) Other Wiring requires compliance with Article 725. Article 725 permits the substitution of Article

800 cables. Both Articles 725 and 800 require the removal of onlv the accessible portion of abandoned cables.Continued acceptance of the text in 640. 6(C) will produce a conflict in the code. Acceptance of this comment will

remove the conflict.Panel Meeting Action: Accept in PrinciplePanel Statement: Refer to the panel action and statement on Comment 12-67.



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12-63 Log #1605 NEC-P12(640.3(A) and 640.6(C))


Submitter: Allen C. Weidman , Society of the Plastics Industry, Inc.Comment on Proposal No: 12-Recommendation: Modify the panel action on 640.6(C) as shown.(C) Abandoned Audio Distribution Cables. The accessible portion of abandoned ALcll.JUIIt: audio distribution cables

shall be removed.Substantiation: The Society of the Plastics Industry supports the removal of abandoned cables. One of our membercompanies is in the business of removing abandoned cables from buildings.

The current requirement for the removal of abandoned cable is in 640.3 Locations and Other Articles. It requires theremoval of onlv the accessible portion of audio distribution cables.

(A) Spread of Fire or Products of Combustion. The accessible portion of abandoned audio distribution cables shall beremoved. See 300.21.Proposals 12-101 and 12-102 recommended moving the requirement to remove abandoned cables to a more

appropriate section. The panel action on proposal 12-94 accomplished that objective.However, the panel action on 12-94 also changed the requirement from the removal of only the accessible portion of

the cables to requiring the removal of.i the cables , including those that are inaccessible.Section 640.9(A)(3) Other Wiring requires compliance with Article 725. Article 725 permits the substitution of Article

800 cables. Both Articles 725 and 800 require the removal of onlv the accessible portion of abandoned cables.Continued acceptance of the text in 640.6(C) will produce a conflict in the code. Acceptance of this comment will

remove the conflict.

Panel Meeting Action: Accept in PrinciplePanel Statement: Refer to the panel action and statement on Comment 12-67.


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12-(640.


Submitter: Technical Correlating Committee on National Electrical Code(I,Comment on Proposal No: 12-Recommendation: It was the action of the Technical Correlating Committee that further consideration be given to thecomments expressed in the voting. This action will be considered by the Panel as a Public Comment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptPanel Statement: The panel accepts the direction of the TCC. See panel action and statement on Comment 12-67.



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12-(640.


Submitter: John H. Mortimer , Inductotherm Industries , Inc.

Comment on Proposal No: 12-Recommendation: Revise text to read as follows:

640. 6(D)(1) Cables identified for future use shall be marked with a tag i,l c2lA.VI Jc2ll'-t: vv ill, lI,t: fvllvvv i"!: of sufficient

durabilitv to withstand the environment involved.(c2) T c2!: i" i'llfJt:' vivu" lv lI,t: dft:d" v f It:lllfJt:' c2 lul t: c2l1J Jc2l1lfJllt:SS.

(I.) T c2!: j" I t:" i"lc2llllv lI,t: dft:.." v f !:llc2vv i"!: I.y I vJt:llb.640. 6(D)(2) Cables shall have the following information on the tag: VI ill lI,t: Jc2lc2 l.c2"t:

Substantiation: This comment was prepared by a Task Group after further consideration of the comments expressedin the voting as directed by the Technical Correlating Committee. The revised wording of the section was developed bya Task Group consisting of: Thomas Burke , Jeffrey Holmes , Ron Janikowski , Robert Johnson , John Mortimer , and

Kenneth White.Panel Meeting Action: Accept in PrinciplePanel Statement: Refer to the panel action and statement on Comment 12-67.


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12-(640.


Submitter: Timothy P. McNeive , Thomas & Betts CorporationComment on Proposal No: 12-92 Recommendation: Change the panel action to Accept in Principle. Add the additional text suggest in the comment onaffirmative vote by Mr. Lottmann:

Cable ties that provide primary support for such cables shall have a minimum loop tensile strength of 23 kg (50 Ibs).Substantiation: "Minimum loop tensile" strength is commonly marked on packages of cable ties. The 23 kg minimumfor cable support is well representative of typical straps, hangers and staples listed for flexible conduit and cable supportin accordance with UL 2239 , Hardware for Support of Conduit, Tubing and Cable. The panel is also asked to follow thelong time position of CMP-7 and not consider in its final decision the requirement that cable ties or other supporthardware to be listed.Panel Meeting Action: Reject

Panel Statement: The cable tie strength or failure has not been ilustrated as a problem.The submitter has not provided definitive technical substantiation for the inclusion of minimum loop tensile strength tothe requirement.

Cable ties can be used for securing and supporting cables in a number of Chapter 3 wiring methods without anyrequirements for a minimum loop tensile strength of 23 kg (50 Ib), or in fact any particular minimum strength. Forexample , 334.30 covers securing and supporting of "nonmetallic-sheathed cable" and requires "supporting and securingby staples, cable ties , straps , hangers, or similar fittings designed and installed so as not to damage the cable , atintervals not exceeding 1.4 m (4 1/2 ft) and within 300 mm (12 in. ) of every outlet box , junction box , cabinet , or fitting.It does not have any recommendation for the support strength or similar special considerations. In fact , the cable tie maynot be providing any support at all when the tie wrap is simply anchoring the cable to a beam or joist. Types AC and MCcable also give similar permission to use cable ties for securing and supporting these cables in 320. 30 and 330.respectively. There is not a need to complicate the installation.


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12-(640.


Submitter: Richard P. Owen , City Of St. PaulComment on Proposal No: 12-Recommendation: Revise text to read as follows:640.6 (C) Abandoned Audio Oistribution Cables.The accessible portion of abandoned ALClIIJul.d audio distribution

cables shall be removed.FPN : See Article 100 for a definition of accessible. It is desirable to remove as much abandoned cable as is practical

but it is not the intent of this clause to require construction or renovation specifically to facilitate the removal ofabandoned cable

640.6 0(1) Cables identified for future use shall be marked with a taq ill CI""WI JClII..'" vvill, II ''' Fuliuvvi'I\:. of sufficientdurability to withstand the environment involved.

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Substantiation: This comment was written by a Task Group consisting of Stan Kaufman and Randy Ivans (Panel 16),John Mortimer (Panel 12) and Ron Maassen , Paul Casparro (Panel 3) plus Task Group Chair Richard Owen (Panel 3).The Task Group was directed by the Technical Correlating Committee to examine proposals submitted to all threePanels concerning abandoned cable and other related issues covered by the Panels.The Task Group came to consensus on the following issues and submitted comments to the Panels as appropriate:1) On the issue of abandoned cable removal , the task group agreed that only the accessible portions of abandoned

cable should be removed. To require removal of all cable could , in some cases , necessitate demolition of the building

finish in order to access cables that were properly fastened to the building in accordance with the rules in the variouscode articles. Furthermore , the task group agreed that the requirements for abandoned cable removal should not be inSection X.3 (Locations and Other Articles) but should be relocated into the general requirements of each article.2) The task group also agreed to recommend the addition of a new Fine Print Note to further explain the removal

requirement. This addition was thought to be necessary to address a common practice of cables that are "fished" insideexisting walls. These cables, if abandoned , can be disconnected from their junction point in a wall and pulled out of thewall without having to harm the building finish. At present , in many cases , these cables are being cut off above the wall

and left to drop into the wall space.3) On the issue of "tagged for future use , the Task Group agreed that it was not necessary to require anything more

than the cable tag being "

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of sufficient durability to withstand the environment involved. " This phrase is used in several

other places in the NEC and leaves it up to the AHJ as to what is suitable. This language does not add requirementsthat are diffcult , if not impossible , to enforce by adding unclear requirements for rodent-resistance , etc.

Panel Meeting Action: Accept in PrincipleRevise 640.6(C) and 640.6(0) of the committee action on Proposal 12-94 to read as follows:(C) Abandoned Audio Distribution Cables.The accessible portion of abandoned audio distribution cables shall be

removed.FPN : See Article 100 for a definition of Accessible. It is desirable to remove as much abandoned cable as is practical

but it is not the intent of this clause to require construction or renovation specifically to facilitate the removal ofabandoned cable.(D) Installed Audio Distribution Cable Identified for Future Use.(1) Cables identified for future use shall be marked with a tag of sufficient durability to withstand the environment

involved.(2) Cable tags shall have the following information:(a) Date cable was identified for future use(b) Date of intended use(c) Information relating to the intended future use of cable

Panel Statement: The panel accepts the recommendation of the two task groups who worked extensively on thismaterial. The panel has shown the text to clarify the requirement , since the recommended text of Comment 12-67 is not

clearly presented.



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12-(640.


Submitter: James M. Daly, Upper Saddle River, NJ

Comment on Proposal No: 12-Recommendation: The Panel Action to Accept in Principle is correct , however, the reference to "300. 11 (A)" should be

changed back to "300. 11" as it appears in the 2005 Code.Substantiation: The submitter did not request deletion of (A) after 300. 11 and neither the submitter nor the Panelprovided any substantiation that the other sections of 300. , ((B) and (C)), should not apply. The panel's acceptance ofProposal 12-92 further indicates that 300. 11 (B) and (C) should apply since it would be logical to use cable ties tosupport Article 640 wiring from raceways or other cables.The deletion of (A) was not requested in any of the three Proposals addressing this section , 12-91, 12- , or 12-94.


Panel Statement: The ROP panel action recognizes that the technology addressed in Article 640 requires thereference only to 300.4 and 300. 11 (A), not 300. 11 (B) and (C). The panel does not agree with the substantiation thatcable ties are allowed as support from other cables or raceways.


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12-(640.


Submitter: James M. Daly, Upper Saddle River, NJComment on Proposal No: 12-Recommendation: I support the Panel Action to delete the FPN from the end of 640.Substantiation: The Panel Action and the Panel Statement indicate that the FPN was deleted , however , the NEC 2008draft at ROP stage still contains the FPN.Panel Meeting Action: AcceptPanel Statement: The panel acknowledges the deletion of the FPN from the end of 640.6. The panel notes the panelaction text on Proposal 12-94 properly excluded the FPN. (The ROP draft incorrectly contains the FPN.


Report on Comments - June 2007 P A 70'A",

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12-(640.


Submitter: Robert Kelleher, Paramount Electrical ServicesComment on Proposal No: 12-Recommendation: Continue to accept in principle in part to delete the FPN.Substantiation: CMP- 12 is correct , the addition of these NECA Fine Print Notes , serves no benefit to the user of theNational Electrical code. The NEC is not a training manual. These are not standards , they are a compilation of genericinformation and do not serve as information to the user. These must be purchased through NECA. This FPN as writtenis nothing more than free advertisement , for generic, readily available, information , which must be purchased by thecode user. Code Making Panel 12 has acted to coordinate with the other technical committees in the NEC project. Atotal of seventeen new Fine Print Notes were proposed to reference NECA standards. Sixteen were unanimouslyrejected. Inclusion of this fine print note is in direct conflict with 90. 1 (C). In the action to reject Proposal 8-3, onetechnical committee member promotes NECA Standards as " ... a tool to assist untrained electricians to make safer andbetter installations." The TCC should intervene , uphold the provisions of 90. 1 (C) and prohibit these types of Fine PrintNotes. Failure to do so will mean adding Fine Print Notes for IEC, EEl , IBEW , IAEI , ACC, NETA , NEI , SEIA , AISI , API

ASHE, AHAM , ICEAI , NYBFU and dozens of others when they decide to develop income through generic standardsdevelopment. If this type of fine print note is included in any form , an annex should be included with coupons for thecode user. If the NEC is to be used for advertisement purposes coupons should be included.Panel Meeting Action: Accept in PrinciplePanel Statement: The panel agrees with the recommendation to maintain the deletion of the FPN. The panel doesnot agree with the submitter s substantiation. The panel agrees with the action based on thE substantiation provided inComment 12-69. The panel notes that changes to Proposal 12-94 have been made through the panel action on Comment 12-67.



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12-(640.


Submitter: Ray R. Keden , Erico , Inc. / Rep. SICSIComment on Proposal No: 12-Recommendation: Revise accepted text:(C) Abandoned Audio Distribution Cables. The accessible portion of abandoned audio distribution cables shall be

removed.Substantiation: Cables may be installed in walls or conduit where removal can only be done of the accessible portion.Panel Meeting Action: Accept in PrinciplePanel Statement: Refer to the panel action and statement on Comment 12-67.



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Submitter: John P. Masarick , Independent Electrical Contractors Inc.Comment on Proposal No: 12-Recommendation: The panel is encouraged to continue to Accept in Principle Proposal 12-95.Substantiation: The reasons to continue to Accept in Principle the Proposal are as follows:

1. The trend by the CMPs over the last several code cycles has been to limit the use of FPNs.2. There is also a correlation issue. There is a conflict between those panels that accepted the proposal and those that

rejected the proposal.3. These standards are also covered by a Fine Print Note in 110. 12.4. The FPN should not be accepted because numerous standards and installation manuals exist and to only mention

one does not adequately inform the public about accepted industry practices. The NEC is not intended to be aninstruction manual for untrained persons. If the FPNs are allowed to reference these standards , then they should list allapplicable standards.

5. Since the referenced installation standards are intentionally general to cover different models of equipment, approvalof the FPN may lead many to believe these standards can be used instead of listed or labeled manufacturerinstructions which would be in violation of 110.3(8).

6. If the CMP would like to include the reference , it should be placed in the Annex with the other references.Panel Meeting Action: Accept

Panel Statement: The panel agrees with the recommendation to maintain the deletion of the FPN. The panel does notagree with the submitter s substantiation. The panel agrees with the action based on the substantiation provided Comment 12-69.


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12-73 Log #1860 NEC-P12(640.6(0)(1))


Submitter: Michael Walls , American Chemistry CouncilComment on Proposal No: 12-Recommendation: Revise text to read as follows:640.(1) Cables identified for future use shall be marked with a tag i'l c1\-\-VI Jc1I'\-t: vv ill, II It: fullvvv i,, of sufficient durability to

withstand the environment.040.00 (1) c1 T c1 j", illlfJt:,v ivu", tv II It: dft:d", vf tt:lllfJt:l dult: c1I1J Jc1ll1fJllt:"'''

040.00( 1)L T i", I t:", j",Lc1I1L tv II It: dftd", v 1Ic1vv ill IvJt:llb(2) Cables shall have the following information on the tag or in a database(a) Oate cable was identified for future use(L) Oc1Lt: vf i"b ,Jt:J u"'t:

(c) Information relating to the intended future use of cableSubstantiation: To obtain a tag with the above requirements would be very difficult and why not use language that isalready in the code" of sufficient durability to withstand the environment.Also it is impracticable to predict when a spare cable will be used. That requirement would be very difficult to enforceand would require monitoring to see if the date has passed.

Panel Meeting Action: Accept in Principle in PartPanel Statement: The panel accepts the recommendation to delete (0)(1)a and (0)(1)b. The panel disagrees with thedeletion of the date of intended use. A cable with no expected date of future use is abandoned. The panel alsodisagrees with the inclusion of "or in a database" as a way to identify the information on the tag. Oatabases may not bereadily available.

See panel action and statement on Comment 12-67.


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12-74 Log #1248 NEC-P12(640.7(A))


Submitter: Neil F. LaBrake, Jr. , Syracuse , NY

Comment on Proposal No: 12-Recommendation: Reject the Panel's action on 640.7(A) and keep the original proposed text.Substantiation: The Panel's action on 640.7(A) creates redundant use of the word "bonded" in the sentence. The termconnected" is appropriate according to the Panel action on Proposal 5-2 for the definition of the term "bonded

(bonding)"and is consistent with the NEC TCC Task Group on Grounding and Bonding s original initiative.This Comment was developed by a Task Group assigned by the NEC Technical Correlating Committee to address

actions that were other than "accept" taken by Code-Making Panels on proposals from the TCC to resolve 2005 NECProposal 5- 1 and Comment 5-1. Members of the Task Group on Grounding and Bonding for this Comment included: C.Douglas White; Michael Johnston; Jeffrey Boksiner; Daleep Mohla; Phil Simmons; Christopher Hutchings; JamesCarroll; Alan Rebeck; Richard Loyd; Paul Dobrowsky; and Neil F. LaBrake , Jr.


Panel Statement: The word "bonded" is defined as a particular type of "connected. " The ROP panel action reflects theintended meaning and is consistent with respect to the particular technology addressed in Article 640.


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12-(645.


Submitter: Ray R. Keden , Erico , Inc. / Rep. BICSIComment on Proposal No: 12- 104Recommendation: Accept the Proposal with stated new wording:

645.2 Definitions.Abandoned Audio Distribution Cable. The definition in 640.2 shall applv.Abandoned Class 2. Class 3. and PL TC Cable. The definition in 725.2 shall applv.Abandoned Fire Alarm Cable. The definition in 760.2 shall applv.Abandoned Optical Fiber Cable. The definition in 770.2 shall applv.Abandoned Communications Cable. The definition in 800.2 shall applv.Abandoned Coaxial Cable. The definition in 820.2 shall applv.Abandoned Network-Powered Broadband Communications Cable. The definition in 830.2 shall applv.Abandoned Tvpe DP Cable. Installed Tvpe DP cable that is not terminated at eauipment and not identified for future

use with a taa.Substantiation: This Proposal offered definitions of the following types of cables that are referenced in 645(D)(5)c.. Class 2 , Class 3 , and PL TC Cable. Types CL2 (Class 2), CL3 (Class 3), and PL TC (Article 725).. Fire Alarm Cable Types NPLF and FPL (Article 760). Optical Fiber Cable Types OFC and OFN (Article 770). Communications Cable Type CM (Article 800). Coaxial Cable Type CATV (Article 820).BICSI designers and installers place these types of cables, as well as , audio distribution cables and network powered

broadband cables, in computer rooms.Panel Meeting Action: Reject

Panel Statement: See panel action on Proposal 12-106, which established a definition of "Abandoned Supply Circuitsand Interconnecting Cables." Individual definitions as recommended in the comment are not necessary.

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12-76 Log #83 NEC-P12(645.4(6))


Submitter: Technical Correlating Committee on National Electrical Code(iComment on Proposal No: 12-108Recommendation: The Technical Correlating Committee understands that this new Section follows the existing FPN to645.4(5). The Technical Correlating Committee directs that the panel add a title to the new section.This action will be considered by the Panel as a Public Comment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: Accept

Panel Statement: The panel agrees with the direction of the TCC and clarifies that Proposal 12- 1 08 is rejected byaction on Comment 12-78. No new title is necessary.



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12-77 Log #1316 NEC-P12(645.4(6) (New) )


Submitter: Stephen McCluer, American Power Conversion CorpComment on Proposal No: 12- 108Recommendation: Revise proposal as follows:

645.4(6) E"'''l:fJl fu, liyl,li"y clII J ib \"ll l. v , "V tlelectrical distribution equipment or wiring, other than that whichsupplies the IT equipment an its associated equipment. and a dedicated heating/ventilating/air conditioning (HVAC)eauipment shall be installed in the room.

Exception NO. 1: Liahtina and its control shall be permitted to be installed.Exception NO. Communications systems and monitorina svstems such as telephones fire alarm svstems. fire

extinauishina svstems. securitv svstems. water detection svstems. and other related protection eauipment shall bepermitted to be installed.Exception No-3: Power wirina; cablina and wall-mounted receptacles installed as premises wirina within the walls in

accordance with Chapters 1-4 of this Code shall be permitted to be installed.Substantiation: As written , this requirement would prevent the use of wall outlets in an IT space.The proponent's substantiation implies that he might have wanted the stipulation to apply only to power distribution

under a raised floor, but the proposal does not say that. Therefore , any non- IT equipment cabling, whether run

overhead in racks and cable trays or within raceways inside of walls , would be prohibited.Furthermore , the proponent talks about wanting to de-energize the entire room via the disconnecting means. That

implies that everything in the entire IT space would have to be powered on the critical bus (usually on conditioned, UPSprotected power). 645. 10 already requires de-energizing all electronic equipment" in the IT equipment room. Theproponent asks us to provide a higher level of protection for normal power than is required in any other part of the Code,simply because it is an IT room with power cabling under a raised floor.

It is inconceivable to have an IT equipment room with no wall outlets.. Contractors need to run equipment in the room during installation , maintenance, and renovation. Connecting their

heat guns , drills , halogen lights , or other tools and test equipment into the conditioned power at best invites a trippedcircuit breaker and nuisance alarms , and at worst causes damage to IT data or equipment.

If there is a water emergency under the floor , wet vacuums must be plugged in somewhere. They cannot beplugged into the critical power bus.. In the event of a cooling failure , temporary cooling systems might be rolled in to cool hot spots; they must plug into

something - certainly not the critical bus!. Long extension cords through open doors will reduce environmental control , compromise fire protection systems

compromise security, and can damage extension cord insulation.. One assumes that any IT space created in existing buildings would require removal of all existing wall outlets in

order to comply with the revised Article 645.. Wall mounted receptacles that are installed in an IT environment that are dedicated to service equipment should be

allowed and should be supplied from a non- IT dedicated distribution source. (General purpose distribution sources). IT spaces should be provided with the same wall-mounted receptacle spacing as required in 210.52(A)(1): no point

measured horizontally along the floor line in any wall space should be more than 1.8 m (6 ft) from a receptacle outlet.As written , the proposal also suggests that only one HVAC device would be permitted , when most of the time there are

multiple dedicated air conditioners.Taken to its extreme, the wording would even prevent the use of UPS systems in an IT room if they were listed as

power systems instead of IT equipment.Finally, as written the proposal would eliminate many other essential, non- IT equipment types , including

communication systems , security systems , monitoring systems , fire alarm systems, fire extinguishing systems , waterdetection systems, etc. The proponent and the panel appear to have not thought through the unintended consequencesof this code.The safety record of IT spaces is extremely good. Proponent has offered no statistics to justify why more restrictions

are required.

See: Marty Ahrens , Computer and Computer Peripheral Fires With a Discussion of Fires , National Fire ProtectionAssociation , August 2006. From 1999 to 2003 there were fewer than 30 fires in computer rooms and control spaces.That equates to less than 3 percent of all computer-related fires, less than 0. 1 percent of all commercial fires , and less

than $200,000 total property damage. That's a darned good record. If ain t broke, don t fix it.The justification for this proposal is weak and the wording is ill-advised. The proposal should be rejected and returned


Report on Comments - June 2007 NFP A 70to sender for rewrite in the next cycle. It is just bad code.Panel Meeting Action: Reject

Panel Statement: The exceptions as shown in the comment are not necessary due to the action on Comment 12-78.See panel action and statement on Comment 12-78. In addition , the panel does not agree that the action taken duringthe proposal stage produced "bad code ; rather it reflects the benefits of an open consensus process.



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12-77a Log #2506 NEC-P12(645.4(6) Exception)


Submitter: Technical Committee on Electronic Computer SystemsComment on Proposal No: 12-108Recommendation: Revise the exception to new 645.4(6) to read as follows:Exception: Communications systems and monitorinq svstems such as telephone. fire alarm svstems. fire extinquishinq

svstems. securitv svstems. water detection svstems and other related protective equipment shall be permitted to beinstalled.Substantiation: Clarify the fact that monitoring systems should be covered under the exception.


Panel Statement: The exception as shown in the comment is not necessary due to the action on Comment 12-78. .

See panel action and statement on Comment 12-78.



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Final Action: Accept in Part

Submitter: Noel Williams, Herriman , UTComment on Proposal No: 12- 108Recommendation: This Proposal should have been Rejected or Accepted in Principle with the following revision to theException:

Exception to (6): Communications. siqnalinq. and fire alarm systems wirinq and equipment for control of or connectionto equipment related to the information technoloqv room equipment or for required functions shall be permitted.Substantiation: The proposal is seriously flawed. The panel should give additional consideration to the Explanation ofNegative by Mr. Johnson. This proposal creates a direct contradiction with the requirements of 645. 5(D)(3), whichrequires smoke detection , while making an unlimited exception for communications systems (the exception does notrequire the communications wiring to be related in any way to the IT equipment or the use of the IT room). Also , it couldbe argued that communications, signaling, and fire alarm wiring is not "electrical distribution equipment or wiring, " sinceit is not clear whether "electrical distribution" modifies just "equipment" or "equipment and wiring." A strict interpretationof the proposed wording would even prohibit interconnecting data wiring that is usually classified as Class 2 underArticle 725 as well as the Class 2 wiring for temperature control for a separate HV AC system as permitted by 645.4(2).Even the wiring for and the EPO devices themselves that are required by 645.4(1) and 645. 10 are prohibited since it isoften not "electrical distribution equipment or wiring" whatever that means. (The panel should understand that strictliteral interpretations will be applied by some jurisdictions.) The exception should also clearly refer only to (6) in this case(especially since it's at the end of the list of requirements.Panel Meeting Action: Accept in PartReject Proposal 12- 108.Panel Statement: The panel accepts the recommendation to reject Proposal 12- 1 08. The panel does not accept therecommendation to accept in principle the recommendation to include a new exception in the comment.The panel chairman appointed a task group to study the issues raised in the comments. The task group concluded that

the best course of action would be to reject the original proposal and revert back to the language of the 2005 NEC.



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12-(645.


Submitter: John H. Mortimer, Inductotherm Industries, Inc.Comment on Proposal No: 12- 116Recommendation: Revise text to read as follows:

645.5(G)(1) Supply circuits and interconnecting cables identified for future use shall be marked with a tag elL",UI Jell''''' vv ill, lI,,, fulluvv i,, of sufficient durabilitv to withstand the environment involved.

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645. 5(G)(2) Supply circuits and interconnecting cables shall have the following information on the tag: UI i" II,,,Jellel lJeI""'.

Substantiation: This comment was prepared by a Task Group after further consideration of the comments expressedin the voting as directed by the Technical Correlating Committee. The revised wording of the section was developed bya Task Group consisting of: Thomas Burke , Jeffrey Holmes , Ron Janikowski , Robert Johnson , John Mortimer, andKenneth White.Panel Meeting Action: Accept in PrinciplePanel Statement: See panel action and statement on Comment 12- , which meets the intent of the submitter.



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12-(645.


Submitter: Richard P. Owen , City of St. PaulComment on Proposal No: 12- 116Recommendation: Revise text to read as follows:

645.5(F) Abandoned Supplv Circuits and Interconnectina Cables . The accessible portion of abandoned AUCI" Julldsupplv circuits and interconnectina cables shall be removed unless contained in a metal racewav.

FPN : See Article 100 for a definition of accessible. It is desirable to remove as much abandoned cable as is practicalbut it is not the intent of this clause to require construction or renovation specifically toJacilitate the removal ofabandoned cable

645.5G (1) Supplv circuits and interconnectina cables identified for future use shall be marked with a taa i" CI""U' JClI'''tj

ill, lI,tj fuliuvv i"\:. of sufficient durability to withstand the environment involved.645.5G (1) (CI) T CI\: i" ;II'jJtj' viuu" tu lI,tj dftd" uf ttjll'jJtj' du, tj ClIIJ JClllljJlltj"'"645. 5G (1) (u) T CI\: i" ,tj"dClllllu lI,tj dftd" u f \:IIClvv ill\: uy ,uJtjllb.645.5G (2) Supplv circuits and interconnectina cables shall have the followina information on the taa: u, i" CI J",ICluCI"tj.

Substantiation: This comment was written by a Task Group consisting of Stan Kaufman and Randy Ivans (Panel 16),John Mortimer (Panel 12) and Ron Maassen , Paul Casparro (Panel 3) plus Task Group Chair Richard Owen (Panel 3).The Task Group was directed by the Technical Correlating Committee to examine proposals submitted to all threePanels concerning abandoned cable and other related issues covered by the Panels.The Task Group came to consensus on the following issues and submitted comments to the Panels as appropriate:1) On the issue of abandoned cable removal, the task group agreed that only the accessible portions of abandoned

cable should be removed. To require removal of all cable could , in some cases, necessitate demolition of the building

finish in order to access cables that were properly fastened to the building in accordance with the rules in the variouscode articles. Furthermore , the task group agreed that the requirements for abandoned cable removal should not be inSection X3 (Locations and Other Articles) but should be relocated into the general requirements of each article.2) The task group also agreed to recommend the addition of a new Fine Print Note to further explain the removal

requirement. This addition was thought to be necessary to address a common practice of cables that are "fished" inside

existing walls. These cables, if abandoned, can be disconnected from their junction point in a wall and pulled out of thewall without having to harm the building finish. At present, in many cases , these cables are being cut off above the wall

and left to drop into the wall space.3) On the issue of "tagged for future use , the Task Group agreed that it was not necessary to require anything more

than the cable tag being "

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of sufficient durability to withstand the environment involved. " This phrase is used in several

other places in the NEC and leaves it up to the AHJ as to what is suitable. This language does not add requirementsthat are difficult, if not impossible, to enforce by adding unclear requirements for rodent-resistance , etc.

Panel Meeting Action: Accept in PrincipleRevise 645.5(F) and 645.5(G) to read as follows:(F) Abandoned Supply Circuits and Interconnecting Cables. The accessible portion of abandoned supply circuits and

interconnecting cables shall be removed unless contained in a metal raceway.FPN : See Article 100 for a definition of Accessible. It is desirable to remove as much abandoned cable as is practical

but it is not the intent of this clause to require construction or renovation specifically to facilitate the removal ofabandoned cable.(G) Installed Supply Circuits and Interconnecting Cables Identified for Future Use.(1) Supply circuits and interconnecting cables identified for future use shall be marked with a tag of sufficient durability

to withstand the environment involved.(2) Supply circuit tags and interconnecting cable tags shall have the following information:(a) Date identified for future use(b) Date of intended use(c) Information relating to the intended future use

Panel Statement: The panel accepts the recommendation of the two task groups who worked extensively on thismaterial. The panel has revised the text to clarify the requirement; since the recommended text of Comment 12-80 is

not clearly presented.



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12-81 Log #865 NEC-P12(645.5(C)(6))


Submitter: John P. Masarick , Independent Electrical Contractors Inc.Comment on Proposal No: 12- 109

Recommendation: The panel is encouraged to continue to Reject Proposal 12- 109.

Substantiation: The reasons to continue to Reject the Proposal are as follows:1. The trend by the CMPs over the last several code cycles has been to limit the use of FPNs.2. There is also a correlation issue. There is a conflict between those panels that accepted the proposal and those that

rejected the proposal.3. These standards are also covered by a Fine Print Note in 110. 12.

4. The FPN should not be accepted because numerous standards and installation manuals exist and to only mentionone does not adequately inform the public about accepted industry practices. The NEC is not intended to be aninstruction manual for untrained persons. If the FPNs are allowed to reference these standards , then they should list all

applicable standards.5. Since the referenced installation standards are intentionally general to cover different models of equipment , approval

of the FPN may lead many to believe these standards can be used instead of listed or labeled manufacturerinstructions which would be in violation of 110.3(8).

6. If the CMP would like to include the reference, it should be placed in the Annex with the other references.Panel Meeting Action: AcceptPanel Statement: The panel agrees with the recommendation to maintain the deletion of the FPN. The panel does notagree with the submitter s substantiation. The panel reaffirms its statement on Proposal 12- 109.



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12-82 Log #688 NEC-P12(645.5(D) (New) )


Submitter: Timothy M. Croushore , Allegheny PowerComment on Proposal No: 12- 114Recommendation: Revise the main text of 645.5(D) to read as follows:

(D) Under Raised Floors. Power cables , communications cables, connecting cables, interconnecting cables,cord-and-pluq connections, and receptacles associated with the information technology equipment shall be permittedunder a raised floor, provided the following conditions are met:Add a new (3) ahead of the existing (3). Renumber existing (3) through (6) to (4) through (7). The new (3) is as

follows:(3) Supplv cords of listed information technoloqv equipment in accordance with 645.5(B).Revise the text of existing (4) and renumber it to (5) as recommended above. The revised text and revised number are

as follows:(5) Openings in raised floors for cords and cables protect cords and cables against abrasion and minimize the entrance

of debris beneath the floor.Substantiation: These suggested revisions comply with the intent of the original submitter. These revisions arediscussed in my affirmative ballot comment. Cords are manufactured differently than cables due to the requirements forflexibility of the cord. There is confusion in the industry whether cord-and-plug connections from listed informationtechnology equipment supply cords are permitted under the raised floor. This proposal permits listed cords under araised floor where the length of the supply cord and attachment plug cap does not exceed 15 feet in length. Should anyportion of the cord be on the surface of the raised floor , the requirement for protection from physical damage wouldapply.Panel Meeting Action: Accept


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12-83 Log #789 NEC-P12(645.5(D)(5)(d))


Submitter: Stephen McCluer , American Power Conversion CorpComment on Proposal No: 12-114Recommendation: Revise the original proposal as follows:

(d) Power supply cords of listed information technology equipment plugged into receptacles under the raised floorwhen only the portion of the cord required to make the ve connection occupies the lt:IIUII' f. t:t: el i, "fJeI\.t: area

under the raised floor. Cord assemblies shall be protected from damage and shall not Lt: fJt:, II , iUt:J tv lie on the subfloor.

Substantiation: This revision removes the panel's justification for rejecting the original proposal. Despite thechairman s observation that the NEC does not prohibit power supply cords from listed IT equipment from being pluggedinto receptacles under a raised floor, it is, in fact , a practice in some jurisdictions to prohibit such cord assemblies underraised floors. We request this clarification to ensure uniform enforcement of the Code.Panel Meeting Action: Accept in Principle

Panel Statement: See the panel action on Comment 12- , which meets the intent of the submitter.



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12-84 Log #1985 NEC-P12(645.5(0)(5)d.


Submitter: Noel Williams , Herriman , UT

Comment on Proposal No: 12- 103Recommendation: This Proposal should have been Accepted.Substantiation: The panel statement to "see the panel action and statement on proposal 12- 114" is not responsive to

this proposal. As stated in the Comment on Affirmative by Mr. Croushore , the NEC does not prohibit cords in raised

floors. And as stated in the Explanation of Negative by Mr. Johnson , the panel has repeatedly refused to make this issue

clear. In fact , the NEC specifically permits the receptacles to which the cords must attach to be in the raised flooraccording to 645.5(0), but the wiring methods permitted in 645.5 do not include any mention of flexible cords. If thereceptacles are to be installed in the underfloor space , it follows that the cords must also be permitted there , and cords

are permitted by 645.5(8). However, without a modification here, the restrictions of 400.8(2) and (5) apply and the cord

may not be run through the floor assembly into the below-floor area, even if protected as required by 645.5(0)(4). Theproposal adds clarity and actually restricts the use of cords to that portion required to make the connection, but is not asrestrictive and does not raise the issues to which the panel objected in Proposal 12-114. In fact, none of the issues

addressed in the panel statement in Proposal 12-114 are raised by this proposal. The panel statement implies that cords

may be used and objects to the increased restrictions , yet the panel refuses to make the permission clear. The first twosentences of the Comment on Affrmative by Mr. Jones are true, and enough reason to resolve this issue , however the

rest of the comment is immaterial- no new information is necessary to clarify this long-standing issue.Panel Meeting Action: Accept in PrinciplePanel Statement: See the panel action on Comment 12-82, which meets the intent of the submitter.



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Submitter: Technical Correlating Committee on National Electrical Code(8Comment on Proposal No: 12- 116Recommendation: It was the action of the Technical Correlating Committee that further consideration be given to thecomments expressed in the voting. This action wil be considered by the Panel as a Public Comment.Substantiation: This is a direction from the National Electrical Code Technical Correlating Committee in accordancewith 3.4.2 and 3.4.3 of the Regulations Governing Committee Projects.Panel Meeting Action: AcceptPanel Statement: The panel accepts the direction of the TCC. See panel action and statement on Comment 12-80.



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12-86 Log #1863 NEC-P12(645. 5(F))


Submitter: Michael Walls , American Chemistry CouncilComment on Proposal No: 12-116

Recommendation: Revise text to read as follows:645.(1) Cables identified for future use shall be marked with a tag i,l CllA.UI JClII\.t: vv ill, II It: fullvvv i,, of sufficient durability to

withstand the environment.040. 6D (1) CI T CI i'lIfJt:1 v iuu lu lI,t: dft:d vf tt:lIlfJt:' Cllul t: ClII J JCllllfJllt:

040.0D( 1)L T I t: IClI,llu II It: dft:d IIClVV i,, I uJt:llb(2) Cables shall have the following information on the tag or in a database(a) Date cable was identified for future use(L )DCllt: u f ill b ,Jt:J u(c) Information relating to the intended future use of cable

Substantiation: To obtain a tag with the above requirements would be very difficult and why not use language that isalready in the code" of sufficient durability to withstand the environment"Also it is impracticable to predict when a spare cable will be used. That requirement would be very difficult to enforceand would require monitoring to see if the date has passed.

Panel Meeting Action: Accept in Principle in PartPanel Statement: The panel accepts the recommendation to delete (D)(1)a and (D)(1)b. The panel disagrees with the

deletion of the date of intended use. A cable with no expected date of future use is abandoned. The panel alsodisagrees with the inclusion of "or in a database" as a way to identify the information on the tag. Databases may not be

readily available.See panel action and statement on Comment 12-80.



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12-87 Log #790 NEC-P12(645. 10(1))


Submitter: Stephen McCluer, American Power Conversion CorpComment on Proposal No: 12-120 Recommendation: Modify the original proposal as follows:645. 10 Disconnecting Means. A An approved means shall be provided to disconnect power to all electronic equipment

in the information technology equipment room or in desiqnated zones within the room . There shall also be a similarapproved means to disconnect the power to all dedicated HVAC systems serving the room or desiqnated zones andshall cause all required fire/smoke dampers to close. The control for these disconnecting means shall be grouped andidentified and shall be readily accessible at the principal exit doors. A single means to control both the electronicequipment and HVAC systems in the room or in a zone shall be permitted. Where a pushbutton is used as a means todisconnect power, pushing the button in shall disconnect the power. Where multiple zones are created, each zone shallhave an approved means to confine fire or products of combustion to within the zone.

(1) Rt:vi::t: 543. 10 Iu elJJ ell I t:Al-t:fJliulI ellIJ Iu IIUIIIUt:1 lI,t: t:Al-t:fJliulI::

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(1) TI,t: Ji::l-UIII It:d IIIt:ellI:: ::1 lei II vUlllfJ lddy I t:1IIUVt: elil fJUWt:1 lu lI,t: i::ulel lt:J fJudiulI u f lI,t: IUUIII (vv idll-elll ut: Ullt:

t:yu ifJlllt:lIl UI eI l-UII" IIUII I UUfJ u f t:yu il-lIlt:III\,) w ill, eI :: ill lt: II I t:eI 11:: u f Ji::l-ullllt:d(2) Meliludl UI elUIUllldlil- Ji::vUIIlIt:d 111t:elll:: :: l'dllut: 1-t:lllliltt:J

(3) Meliludl Ji::l-ullllt:d I II t:eI 11:: :: l'elllut: ell-l-t:::::iult: ill d II lei II lit: I elvvt:fJlelult: Iv lI,t: eluliluliLy I'elv ill jUl i::JidiulI,Pt,j, TI,t: Ji::l-ullllt:d IIIt:ellI:: IIlelY illduJt: elil elfJfJl uvt:J II It:lIIUJ Iv fJl t:vt:lIl ell-l-iJt:IILdl VI Ullelu lI,UI iLt:J eldivdliull(4) Meliludl Ji::l-ullllt:d II I t:eI 11:: :: l'dllut: dt:eldy iJt:lIlifit:J w ill, :: lIeI t: ::u lI'el l t:1I1\::" t:IIl-Y fJl Ul-t: JUI t: UfJt:1 dlill fJu ill b ell

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(3) TI,t: IUl-diulI u f el il LUIlt:J Ji::l-ullllt:d IIIt:ellI:: ill lI,t: IT I UUIII :: l'el ilut: iJt:lllifit:J ill ::u d I d II lei II lit: I lIlel lll,t:y ell t: t:eI:: ily

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Substantiation: This modification removes the panel's justification for rejecting the original proposal , which stated " it is

too complicated and would be difficult to enforce. " It eliminates the proposed exception and moves the language into thebody of the main paragraph. The proposal codifies practices that are already in use , and it recognizes the technology

that is available today.The proposal does not replace the existing method. It allows an alternative construction which must be approved bythe AHJ(s). Zoned shutdown is already widely used in telecommunications facilities. It usually involves pre-review with the AHJ(s),

special signs , posted instructions , and clear identification of the zones , or anything else that satisfies the AHJ that anequivalent level of safety is provided. Some facilities use special floor markings to guide fire fighters to the affectedzone. The means still exists to shut down power and air to the entire room if necessary.Technology today has the ability to control electricity and cooling with extreme precision. The existing requirement for

disconnecting means has changed very little in almost 50 years , when NFPA 75 and NEC Article 645 were created forthe protection of mission-critical operations. It is time for the Code to reflect reality.

This amendment will actually improve safety, because it will encourage instead of discourage the use of Article 645.Many people today choose not to build ITE rooms per Article 645 because they do not want a single point of failurecapable of shutting down their entire mission-critical operation. This modified proposal gives a reasonable balance ofsafety and business continuity.Panel Meeting Action: Accept



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12-88 Log #1948 NEC-P12(647.7(A)(4))


Submitter: Frederic P. Hartell, Hartell Electrical Services , Inc.

Comment on Proposal No: 12- 127

Recommendation: Reject the proposal, or accept its implicit second option.Substantiation: It is actually unclear what took place under this proposal because the proposal submitter offered thepanel a choice and the panel action was a straight accept. This comment assumes that the last sentence was deleted.The intent of the original drafters of this provision, however, was more in line with the proposal submitter s second

option. Because NEMA has not yet produced a plug and receptacle configuration in accordance with this provision , the

allowance for conventional receptacles was included as a transitional step. Since these receptacles allow any 120Vload to be connected , and since any connected load that does not have a two-pole unit switch (e.g. Edison-baselampholders) will be at 60V to ground internally, the idea is that only qualified personnel should be using them. CMP 12needs to decide whether to force these systems into disconnection by deleting the lined-out text (thereby leaving theunique configuration as the only connection method), or reinstating the transitional language, perhaps with a sunset dateto try to elicit a response from the receptacle industry.Panel Meeting Action: Reject

Panel Statement: The action taken on Proposal 12-127 is clear, and the panel rejects this comment since it fails to

comply with 4.4.5(c) of the Regulations Governing Committee Projects , as the comment does not offer a clear

recommended action.


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12-(660.


Submitter: Dan Leaf, Seneca, SC

Comment on Proposal No: 12-132

Recommendation: Accept as revised:An approved disconnecting means that simultaneouslv disconnects all unqrounded conductors of the circuit with an

ampere rating for at least.(remainder unchanged).Substantiation: Since the panel declined to accept a limitation to a switch or circuit breaker , simultaneous

disconnection should be specified , as it may be inferred that other sections that require this are modified.


Panel Statement: The submitter has not provided adequate substantiation to justify the revision recommended in thiscomment , which would require simultaneous disconnection.


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Submitter: Dan Leaf Seneca , SC


Recommendation: Accept as revised: An approved disconnecting means that simultaneouslv disconnects all unqrounded conductors of the circuit shall be..

(remainder unchanged).Substantiation: Since the panel declined to accept a limitation to a switch or circuit breaker , simultaneous

disconnection should be specified, as it may be inferred that other sections that require this are modified.Panel Meeting Action: Reject

Panel Statement: The submitter has not provided adequate substantiation to justify the revision recommended in this

comment , which would require simultaneous disconnection.



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12-91 Log #1249 NEC-P12(665.26)


Submitter: Neil F. LaBrake , Jr., Syracuse , NY

Comment on Proposal No: 12-Recommendation: Reject the Panel's action on 665.26 and keep the original proposed text.Substantiation: The Panel's action on 665.26 creates redundant use of the word "bonding" in the sentence. The termconnecting" is appropriate according to the Panel action on Proposal 5-2 for the definition of the term "bonded

(bonding)" and is consistent with the NEC TCC Task Group on Grounding and Bonding s original initiative.This Comment was developed by a Task Group assigned by the NEC Technical Correlating Committee to address

actions that were other than "accept" taken by Code-Making Panels on proposals from the TCC to resolve 2005 NECProposal 5-1 and Comment 5-1. Members of the Task Group on Grounding and Bonding for this Comment included: C.Douglas White; Michael Johnston; Jeffrey Boksiner; Daleep Mohla; Phil Simmons; Christopher Hutchings; JamesCarroll; Alan Rebeck; Richard Loyd; Paul Dobrowsky; and Neil F. LaBrake, Jr.Panel Meeting Action: Reject

Panel Statement: The word "bonding" is defined as a particular type of "connecting." The ROP panel action reflectsthe intended meaning and is consistent with respect to the particular technology addressed in Article 665.



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12-92 Log #526 NEC-P12(668.3(C)(3))


Submitter: Dan Leaf, Seneca , SC


Recommendation: Accept the addition of:except as specified in 668. 11 (8)"

Substantiation: Metal enclosures of associated equipment are not required to comply with Article 250 per 668.6(3)(C)while 668. 11 (8) indicates metal enclosures associated with the cell line dc power circuits shall be grounded.Panel Meeting Action: Reject

Panel Statement: The existing wording has not caused confusion in this specialized industry. There is nosubstantiation that the proposed wording adds more clarity. Grounding of power supply enclosures is specificallydescribed in 668. 11 (8).



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12-93 Log #473 NEC-P12(668. 15)


Submitter: Dan Leaf, Seneca, SCComment on Proposal No: 12-142Recommendation: Accept revised:

For equipment , apparatus, and structural components that are required to be grounded the provisions of Article 250shall apply t:;"..t:fJl awa it fJ ifJt: dt:d, uJt: ;:I'alillull.t: I t:yu i, t:J lu I.t: u;:t:. Any electrode or combinations of eiectrodesdescribed in 250.52 shall be permitted.Substantiation: Equipment that is grounded by choice (not required) should also comply with Article 250 since 250.(1) indicates Article 250 covers "permitted" grounding and this section may be deemed to modify that. The reference towater pipe electrodes is superfluous since "any" electrode is permitted.Panel Meeting Action: Reject

Panel Statement: Water pipe electrodes must be an option. In some of the industry, ground leakage current of theprocess can destroy the water piping. In other sections of the industry, the water piping is purposely isolated fromground.



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12-94 Log #497 NEC-P12(668.30(D))


Submitter: Dan Leaf, Seneca, SCComment on Proposal No: 12-144Recommendation: Accept the proposal.Substantiation: The type of protection should be specific; the Code generally specifies whether the protection is fromovercurrent or physical damage. Requirements pertaining to the same thing but differently worded may cause confusionper the Style Manual.Panel Meeting Action: AcceptPanel Statement:

Printed on 12/8/2006 100

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