National Fire Protection Association Report · 2017-05-11 · National Fire Protection Association...

National Fire Protection Association 1 Batterymarch Park, Quincy, MA 02169-7471 Phone: 617-770-3000 • Fax: 617-770-0700 • www.nfpa.org

M E M O R A N D U M

TO: Technical Committee on Electrical Equipment of Industrial Machinery (EEI-AAA) FROM: Diane Matthews, Project Administrator DATE: May 2, 2017 SUBJECT: NFPA 79 Second Draft Technical Committee FINAL Ballot Results (F2017)

According to the final ballot results, all ballot items received the necessary affirmative votes to pass ballot.

28 Members Eligible to Vote 3 Members Not Returned (Mulherrin, Titus and Ziegeweid)

The attached report shows the number of affirmative, negative, and abstaining votes as well as the explanation of the vote for each revision.

To pass ballot, each revision requires: (1) a simple majority of those eligible to vote and (2) an affirmative vote of 2/3 of ballots returned. See Sections 3.3.4.3.(c) and 4.3.10.1 of the Regulations Governing the Development of NFPA Standards.

Second Revision No. 1-NFPA 79-2017 [ Global Comment ]

*************GLOBAL INSTRUCTION - COMP: See Mark's note for clarity***************

Remove all parenthetical terms of (plug/socket) and any variation of (plug and socket outlets)etc. inSections 3.3.96, 5.3.3.2(1), 5.3.5.1(2), 6.4.2(5), 11.2.1.8, 13.1.2.1, 13.4.5, 13.4.5.1, 13.4.5.2, 13.4.5.3,13.4.5.4, 13.4.5.5, 13.4.5.6, 13.4.5.7, 13.4.6, 15.1.1(4), and A.11.2.1.7

The parenthetical terms to remove are (plug/socket), (plug/socket combination), (plugs)-(socket outlets),(socket-outlets) and (plug and socket outlets) in the body of the document. Delete 3.3.9 "Attachment Plug(Plug Cap) (Plug)" and 3.3.82 "Receptacle." Additionally, the Committee removes the definition of the term“socket” and the associated note from Chapter 3, and the annex information in A.3.3.9 and A.3.3.82.

Remove completly A.3.3.9, A.3.3.82

Delete 3.3.9 "Attachment Plug (Plug Cap) (Plug)" and 3.3.82 "Receptacle."

Submitter Information Verification

Submitter Full Name: Mark Cloutier

Organization: [ Not Specified ]

Street Address:

City:

State:

Zip:

Submittal Date: Tue Jan 10 12:46:45 EST 2017

Committee Statement

CommitteeStatement:

The Committee removes the parenthetical terms (plug/socket), (plug/socket combination), (plugs)-(socket outlets), (socket-outlets) and (plug and socket outlets) from the body of the document.Additionally the Committee removes the definition of the term “socket” and the associate note fromChapter 3, the annex information in A.3.3.9 and A.3.3.82 and the symbols and descriptions related to“plug and socket” in Figure D.1q. Also Delete 3.3.9 "Attachment Plug (Plug Cap) (Plug)" and 3.3.82"Receptacle." These actions are consistent with the actions taken in the 2015 cycle and during theFirst Draft to remove the parenthetical terms from the body of the document and provide correlationinformation in Annex J. See the actions taken in SR 1.

ResponseMessage:

Public Comment No. 39-NFPA 79-2016 [Section No. A.3.3.9]

Public Comment No. 49-NFPA 79-2016 [Section No. 6.4.2]


Public Comment No. 54-NFPA 79-2016 [Section No. A.11.2.1.7]


Public Comment No. 58-NFPA 79-2016 [Section No. 13.1.2.1]

Public Comment No. 53-NFPA 79-2016 [Section No. A.3.3.82]




National Fire Protection Association Report http://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPara...

1 of 144 5/10/2017 3:40 PM



Ballot Results

This item has passed ballot

28 Eligible Voters

3 Not Returned

22 Affirmative All

3 Affirmative with Comments

0 Negative with Comments

0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.

Ziegeweid, Stephen J.

Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.

DeFelice, Jr., Frank C.

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.

Affirmative with Comment


2 of 144 5/10/2017 3:40 PM

Brungs, William

Agree

Couch, Jim

Agreed

Dobrowsky, Paul

3.3.9 "Attachment Plug (Plug Cap) (Plug)" and 3.3.82 "Receptacle." should not be deleted. The public commentswere only the delete the Annex A material to those definitions, not the definitions themselves.


3 of 144 5/10/2017 3:40 PM

Second Revision No. 59-NFPA 79-2017 [ Global Comment ]

The term 'plainly' should be removed before 'visible' throughout the standard.


Submitter Full Name: Sonia Barbosa


Street Address:

City:

State:

Zip:

Submittal Date: Fri Mar 17 11:31:55 EDT 2017

Committee Statement

CommitteeStatement:

When there is a visibility requirement within a section it must be judged based on the particularapplication. Using either 'plainly' before 'visible' or 'clearly' before 'visible' does not help withenforcing or interpreting a visibility requirement. Whether something is 'visible' can only be judgedon the specific application.

ResponseMessage:

Ballot Results


28 Eligible Voters

3 Not Returned

21 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.



4 of 144 5/10/2017 3:40 PM

Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Hickman, Palmer L.

The Correlating Committee should review this action as these terms are in other NFPA documents such as theNEC.

Hilbert, Mark R.

The Committee should continue the action to delete the term “plainly” before “visible” throughout the Standard.When there is a visibility requirement within a section it must be judged based on the particular application. Usingeither “plainly visible” does not help with enforcing or interpreting a visibility requirement. It can only be judged onthe specific application. If there are different interpretations of the visibility requirements within a section, then thesection should be rewritten to more clearly identify the visibility requirement.


5 of 144 5/10/2017 3:40 PM

Second Revision No. 54-NFPA 79-2017 [ Detail ]

********INSTRUCTION********

This detail is on SR-53 Section 5.3.1.4 to revise Exception No. 1

Exception No.1: An interlock forwithin the control enclosure shall not be required where devices other thanthe handles of circuit breakers or switches are guarded by a dead-front cover and the use of a key or tool isnecessaryrequired for opening the supply circuit disconnecting means enclosure to access exposed liveparts. A safety sign shall be provided in accordance with Section 16.2.




Street Address:

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Zip:

Submittal Date: Wed Jan 18 15:11:22 EST 2017

Committee Statement

CommitteeStatement:

The revised text clarifies the required construction of the equipment to use this exception. Thisdetail is on SR-53 Section 5.3.1.4 to revise Exception No.1.

ResponseMessage:



Ballot Results


28 Eligible Voters

3 Not Returned

21 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.



6 of 144 5/10/2017 3:40 PM

Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Trainor, Richard S.


Couch, Jim

Agree

Tamblingson, Jay

The revised exception is improved over the 1st draft text but still is still not clear on how it provides equivalentsafety than is currently required by interlocking. The preferred resolution would have been to accept publiccomment 19 which would have deleted the exceptions and returned the text to 2015 Edition language.

Negative with Comment

Brungs, William

The removal of this interlock requirement diverges with current and past precedents. While the intent isunderstood, revised language would be in order.

Hilbert, Mark R.

I agree with the concept of the exception which was to address a specific situation where an industrial machinewas supplied from a load center mounted on the machine. However, the proposed exception does not address thespecific situation and goes beyond the original intention by exempting any enclosure where the devices, otherthan the handles of the circuit breakers or switches or circuit breakers, are guarded by a dead-front cover. Theexception also uses the term “control enclosure” and “dead-front cover” which will be confusing to readers of thestandard. Additionally the reference to a safety sign in accordance with 16.2 is problematic as it does not providethe wording to be used on the safety sign. There are several requirements in 16.2 so which one(s) is intended forthis sign?


7 of 144 5/10/2017 3:40 PM


*************INSTRUCTION**********

This detail is to revise the text in Section 5.3.3.1 (3) on SR-53

5.3.3.1

(3) Be provided with a permanent means permitting it to be locked in the off (open) position only (e.g., bypadlocks), independent of the door or cover position. that also prevents When so locked, remote as well aslocal closing into the ( on ) position shall be prevented.




Street Address:

City:

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Zip:


Committee Statement

CommitteeStatement:

The Committee restores "when so locked" to more clearly indicate that the preventing of closingonly occurs when locked. This is a ballotable detail on Section 5.3.3.1 (3) for SR-53.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All


8 of 144 5/10/2017 3:40 PM

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


9 of 144 5/10/2017 3:40 PM


***************INSTRUCTION****************

This detail is to revise Section 5.3.5.1 (4) for SR-53

(4) Circuits supplying equipment that arerequiredneed to remain energized for satisfactory operation [e.g.,temperature-controlled measuring devices, product (work in progress) heaters, program storage devices,inputs, non-motion outputs, and displays and safety interlocks.]




Street Address:

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Committee Statement

CommitteeStatement:

The TC agreed to add "and safety interlocks" to item "(4)" which are another example of circuitsthat may need to remain energized to ensure proper operation of a machine. This ballotable detailis to revise Section 5.3.5.1 (4) for SR-53.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


10 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


11 of 144 5/10/2017 3:40 PM

Second Revision No. 9-NFPA 79-2017 [ Section No. 1.1.1 ]

1.1.1

The provisions of this standard shall apply to the electrical/electronic equipment, apparatus, or systems ofindustrial machines operating supplied from a nominal voltage of 1000 volts or less, and commencing atthe point of connection of the supply circuit conductors to the electrical equipment of the machine.




Street Address:

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State:

Zip:

Submittal Date: Mon Jan 16 17:23:12 EST 2017

Committee Statement

CommitteeStatement:

The Technical Committee replaced "operating" with "supplied" which clarifies the voltagerequirement is in regards to the supply voltage not the operating voltage.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


12 of 144 5/10/2017 3:40 PM


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


13 of 144 5/10/2017 3:40 PM

Second Revision No. 57-NFPA 79-2017 [ Section No. 2.4 ]

2.4 References for Extracts in Mandatory Sections.

NFPA 70®, National Electrical Code®, 2017 edition.

NFPA 70E®, Standard for Electrical Safety in the Workplace®, 2015 2018 edition.



Organization: National Fire Protection Assoc

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Update to the next edition of NFPA 70 E (2018) that will be issued before NFPA 79 isissued.

Response Message:

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.



14 of 144 5/10/2017 3:40 PM

Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


15 of 144 5/10/2017 3:40 PM


3.3.10* Basic Protection (Protection From Direct Contact) .

Protection against electric shock under fault-free conditions.




Street Address:

City:

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Zip:


Committee Statement

CommitteeStatement:

The TC removes the parenthetical term "Protection From Direct Contact" because this isexplained in the Annex note.

The TC gave further consideration to the ballot comments during voting in FR 20. NFPA 70Eprimarily addresses work practices where NFPA 79 primarily applies to the design and installationof equipment of industrial machinery. There are no similar or equivalent terms in 70E that addressthis.

ResponseMessage:



Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.



16 of 144 5/10/2017 3:40 PM

Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


Hickman, Palmer L.

The Correlating Committee should continue to review this action and this term.


17 of 144 5/10/2017 3:40 PM


3.3.45* Fault Protection (Protection From Indirect Contact) .

Protection against electric shock under single-fault conditions.




Street Address:

City:

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Zip:


Committee Statement

CommitteeStatement:

The TC removes the parenthetical term "Protection from Indirect contact" because this isexplained Annex J.

The TC gave consideration to the ballot comments during the voting on FR 20. NFPA 70E primarilyaddresses work practices where NFPA 79 primarily applies to the design and installation ofequipment of industrial machinery. There are no similar or equivalent terms in 70 E that addressthis.

ResponseMessage:



Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.



18 of 144 5/10/2017 3:40 PM

Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


Hickman, Palmer L.

The Correlating Committee should continue to review this action and this term.


19 of 144 5/10/2017 3:40 PM

Second Revision No. 39-NFPA 79-2017 [ New Section after 3.3.69 ]

3.3.69 Machine Supply Circuit.

The conductors between the premises wiring and the machine disconnecting means or terminals.




Street Address:

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Committee Statement

CommitteeStatement:

Add a new definition “Machine Supply Circuit”. The definition is being added as a companioncomment to comment number 31 and is intended to assist with clarifying what is the supply circuitto the machine. There is a need to differentiate between the requirements for the source(s) ofsupply for the machine and the downstream disconnects and enclosures.

This is not new material based on ballot comments during voting.

ResponseMessage:

Public Comment No. 33-NFPA 79-2016 [New Section after 3.3.69]

Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


20 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Hickman, Palmer L.

The Correlating Committee should review this action.


21 of 144 5/10/2017 3:40 PM


3.3.108 Visible, Plainly.

Able to be seen without the movement or unmounting of surrounding equipment.




Street Address:

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Zip:


Committee Statement

CommitteeStatement:

The definition was removed as it did not add clarity or usability to the document as not all possiblesituations that could occur were considered. When there is a visibility requirement within a section itmust be judged based on the particular application. Using either “plainly” before “visible” or “clearly”before “visible” does not help with enforcing or interpreting a visibility requirement. Whethersomething is “visible” can only be judged on the specific application.

ResponseMessage:



Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All


22 of 144 5/10/2017 3:40 PM

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


Szende, Andras

While the definition may not be clear, it's intent was important and commonly well interpreted. If no correctdefinition could be created to replace it, removing it altogether may not be of any benefit to the reader.


23 of 144 5/10/2017 3:40 PM

Second Revision No. 10-NFPA 79-2017 [ New Section after 4.2 ]

4.3 Installation and Use of Listed or Labeled Equipment.

Listed or labeled equipment shall be installed and used in accordance with any instructions included inthe listing or labeling.




Street Address:

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Committee Statement

CommitteeStatement:

The TC adds this requirement to clarify that listed or labeled equipment shall be installed and usedin accordance with any instructions included in the listing and labeling. NFPA 79 should not rely on1.5 to refer users to NEC 110.3(B). This is re-located to Chapter 4 in the new location as a newsection after 4.2 as 4.3 as it is more appropriate under the general requirements as opposed toadministration in Chapter 1.

ResponseMessage:

Public Comment No. 87-NFPA 79-2016 [New Section after 1.6]

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


24 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


25 of 144 5/10/2017 3:40 PM

Second Revision No. 49-NFPA 79-2017 [ Section No. 4.3.2.8 ]

4.4.2.8 Circuits Supplied From Power Conversion Equipment.

Electrical conductors and equipment supplied by power conversion equipment as part of adjustable speeddrive systems and servo drive systems shall be listed flexible motor supply cable marked type RHH,RHW, RHW-2, XHH, XHHW, or XHHW-2 or selected based on the electrical power characteristicsinvolved and the equipment manufacturer’s instructions.




Street Address:

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Committee Statement

CommitteeStatement:

Listed flexible motor supply cable marked type RHH, RHW,RHW-2, XHH, XHHW or XHHW-2 willprovide protection against damage which may occur in applications of variable frequency drivessubjected to nonlinear power distortions. Use of these cables provides an alternate solution tofollowing the equipment manufacturer’s instructions

The reference to “electrical power characteristics involved” is deleted as it is vague andunenforceable (unclear to users of the standard). Deletion of this text addresses Public CommentNo. 14, CC Note # 9.

ResponseMessage:



Ballot Results


28 Eligible Voters

3 Not Returned

21 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean


26 of 144 5/10/2017 3:40 PM

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Trainor, Richard S.


Brungs, William

This standard should not refer to specific types of conductors. Perhaps the intent of this requirement should beadapted into UL standards, etc. Decisions on the proper selection of conductors resides on the equipmentdesigner/company. The statement of following equipment manufacturer's instruction should be implemented intothis section, however.

Couch, Jim

There has not been enough study to validate limiting wire to solely these types. Needs to be some type oflimitation on cable lengths with other types of wire. Recommend more in depth detail/discussion at next revision ofthe standard.

Neeser, Daniel R.

4.3.2.8 currently addresses general considerations when applying electrical conductors and equipment on theoutput circuits of power conversion equipment which could include conductors, motors, circuit protection, andoverload protection devices. The changes made in the second draft have narrowed the scope to focus onconductors and now incorrectly states that "conductors and equipment" shall be "listed flexible motor supplycable". In addition, requirements for conductor type and insulation should be located in Chapter 12 not in Chapter4. Finally, evaluations have determined that this phenomenon may occur in a variety of conductor types, includingthose identified in the proposed added text, under certain conditions. It is agreed to strike out the text “electricalpower characteristics involved” to respond to correlating committee comments.

Tamblingson, Jay


27 of 144 5/10/2017 3:40 PM

4.3.2.8 addresses general power considerations when applying electrical conductors and equipment on theoutput circuits of power conversion equipment. The revised wording alters this intent to focus only conductors andnow is in error in requiring that "equipment" shall be "listed flexible motor supply cable". Any specific conductorspecific requirements should be located in Chapter 12 or stated as examples in an annex note.


28 of 144 5/10/2017 3:40 PM


4.5.2* Electromagnetic Compatibility (EMC).

Transient suppression, isolation, or other appropriate means shall be provided where the equipment of anindustrial machine generates electrical noise or transients, which can affect the operation of equipmentthat is on or part of the industrial machine .




Street Address:

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Zip:


Committee Statement

CommitteeStatement:

The committee statement for FR 14 indicates that:

The effects on other equipment within the surrounding area must be considered but themachine is not required to have noise suppression for other such equipment.

The TC has clarified the text and considered the negative comments as directed by the CC.

ResponseMessage:




Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


29 of 144 5/10/2017 3:40 PM


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


30 of 144 5/10/2017 3:40 PM


4.9 Available Fault Current.

The available fault current at the point of supply to each industrial control panel of a machine machinesupply circuit disconnecting means shall not be greater than the short-circuit current rating marked on themachine industrial control panel nameplate.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The revised text addressed the concerns of the negative comment during voting as directed bythe CC and is consistent with changes made to address the machine supply circuit.

Available fault current is the most consistent term for the amount of current available during ashort circuit.

.

ResponseMessage:

Public Comment No. 16-NFPA 79-2016 [Section No. 4.8]

Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.



31 of 144 5/10/2017 3:40 PM

Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Neeser, Daniel R.

“each” was deleted at the second draft meeting but was not deleted in Terra. “each” should be replaced with “the”before “machine supply circuit disconnecting means”.


32 of 144 5/10/2017 3:40 PM

Second Revision No. 40-NFPA 79-2017 [ Chapter 5 [Title Only] ]

Supply Circuit Terminations and Disconnecting Means




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

This revised title indicates that the means for disconnecting power to a machine’s supply circuitconductor terminations and/or other permitted circuit conductors associated with machineequipment are located in this chapter. This simplification will better assist readers of the documentwhich chapter of the standard to refer to for disconnecting means.

The TC reconsidered the ballot comments as directed by the CC during revision of the title.

ResponseMessage:

Public Comment No. 12-NFPA 79-2016 [Chapter 5 [Title Only]]


Ballot Results


28 Eligible Voters

3 Not Returned

21 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


33 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Hilbert, Mark R.

I agree with the revision actions taken by the Committee for Chapter 5 and thank the members for thetremendous efforts put forward to get to this point. These revisions will go a long way towards clarifying the mainrequirements are for disconnecting the supply circuit to the machine. However, the work on Chapter 5 shouldcontinue into the next cycle as there are requirements for other disconnecting means located in the Chapter. Atask group should be formed between the cycles with the scope of reviewing Chapter 5 and proposing firstrevisions to consider breaking the Chapter into subdivisions containing requirements for the differentdisconnecting means. Additionally, the scope should include clarifying the interlocking requirements in Chapter 6for control enclosures containing disconnecting means that are not for the supply circuit to the machine.


Tamblingson, Jay

The revised title change made in the second draft gives the reader the impression that Chapter 5 has beenfurther reduced to cover only disconnecting means, which it has not. The preferred resolution would have been toaccept Public comment 12 which would have restored the 2015 edition title.


34 of 144 5/10/2017 3:40 PM

Second Revision No. 53-NFPA 79-2017 [ Sections 5.1, 5.2, 5.3, 5.4, 5.5 ]

5.1 Incoming Machine Supply Circuit Conductor Terminations.

5.1.1*

Where practicable, the electrical equipment of a machine shall be connected to a single power supplycircuit. Where it is necessary to use another supply circuit for certain parts of the equipment (e.g.,electronic circuits, electromagnetic clutches), that supply circuit shall, as far as is practicable, be derivedfrom devices (e.g., transformers, converters) forming part of the electrical equipment of the machine.

5.1.2

The incoming supply circuit conductors shall be terminated at the supply circuit disconnecting means,where practicable. Connections to terminal blocks ahead of the disconnecting means shall be permittedfor excepted circuits according to 5.3.5 or where the incoming supply circuit conductors are other thanthose identified for the supply circuit disconnecting means. Terminals for more than one conductor shall beso identified.

5.1.3*

Where a grounded conductor is used, it shall be clearly indicated in the technical documentation of themachine, such as in the installation diagram and in the circuit diagram. A separate insulated terminal shallbe provided for the grounded conductor.

5.1.4

All terminals for each incoming supply circuit shall be legibly marked and correspond with markings onthe technical documentation.

5.1.5

The wire bending space provided between the terminals of the supply circuit disconnecting means (orterminals described in 5.1.2) and the wall of the enclosure shall not be less than required by Section430.10(B) of NFPA 70. Space shall be determined by the maximum wire size of incoming the supplycircuit conductors or not smaller than the conductors required by Section 670.4(A) of NFPA 70. When thewire bending space is based on more than one conductor per phase, the intended conductor size andnumber shall be so identified on interconnection diagrams as in 17.5.7.

5.1.6

Each set of incoming supply circuit conductors on the line side of the disconnecting means shall beseparated from all other internal conductors, including conductors of other supply circuits by either of thefollowing:

(1) Mounting the supply circuit disconnect as near as practicable to the top of the enclosure withdedicated wire bending space as in 5.1.5

(2) Mounting the supply circuit disconnect other than at the top of the enclosure and by separating thesupply circuit conductors from other internal conductors by the use of a barrier

5.1.7

All live parts on the line side of the supply circuit disconnecting means shall be protected fromunintentional direct contact by use of insulation or obstacle(s) when the disconnecting means is in theopen (off) position and the enclosure door is open.

5.2* Machine Supply Circuit Grounding Terminal.

A grounding terminal shall be provided for each incoming supply circuit.

5.3 Machine Supply Circuit Disconnecting (Isolating) Means.

5.3.1 General.

The following general requirements in 5.3.1.1 through 5.3.1.5 apply to 5.3.2 through 5.3.5.

5.3.1.1


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A supply circuit disconnecting means shall be provided for the following:

(1) Each supply circuit connecting to a machine

(2) Each supply circuit connecting to a feeder system using collector wires, collector bars, slip-ringassemblies, or flexible cable systems (reeled, festooned) to a machine or a number of machines

(3) Each on-board power source (e.g., generators, uninterruptible power supplies)

Exception: Communication, remote control, and signaling circuits of less than 50 volts shall not berequired to be provided with a supply circuit disconnecting means.

5.3.1.1.1*

Each supply circuit disconnecting means required by 5.3.1.1 shall be legibly marked to indicate theequipment it disconnects.

5.3.1.1.2

A main supply circuit disconnecting means shall be marked as main if multiple “Machine Supply CircuitDisconnect” if additional disconnecting means are supplied from the main supply circuit disconnectingmeans.

5.3.1.1.3

Where a machine is supplied by more than one supply circuit, a marking shall be installed at each supplycircuit disconnect location denoting the location of all other supply circuit disconnects.

5.3.1.2

The supply circuit disconnecting means shall disconnect (isolate) the electrical equipment of the machine,including all control circuits, from the supply circuit when required (e.g., for work on the machine, includingthe electrical equipment). Circuits that are not required to be disconnected by the supply circuitdisconnecting means shall comply with 5.3.5.

5.3.1.3

Each supply circuit disconnecting means other than attachment plugs and receptacles shall be mountedwithin the control enclosure or immediately adjacent thereto.

Exception No. 1: Externally mounted supply circuit disconnecting means, whether interlocked or notinterlocked with the control enclosure, supplying machines totaling 2 hp or less shall be permitted to bemounted up to 6 m (20 ft) away from the control enclosure, provided the control enclosure is marked toindicate the location of the supply circuit disconnecting means and the supply circuit disconnectingmeans complies with all the following:

(1) Is in sight of the control enclosure it supplies

(2) Is readily accessible

(3) Is marked in accordance with 5.3.1.1.1

Exception No. 2: A supply circuit disconnecting means mounted in a separate enclosure and interlockedin accordance with 6.2.3.1 with the control enclosure(s) it supplies shall be permitted to be mounted upto 6 m (20 ft) away from the control enclosure, provided the control enclosure is marked to indicate thelocation of the supply circuit disconnecting means and the supply circuit disconnecting means complieswith all the following:

(1) Is in sight of the control enclosure it supplies

(2) Is readily accessible

(3) Is marked in accordance with 5.3.1.1.1

Detail SR-54


36 of 144 5/10/2017 3:40 PM

5.3.1.4

Each supply circuit disconnecting means mounted within or adjacent to the control enclosure shall beinterlocked with the control enclosure in accordance with 6.2.3.1.

Exception No. 1: An interlock withinfor the control enclosure shall not be required where devices otherthan the handles of circuit breakers or switches are guarded by a dead-front cover and the use of a keyor tool is requirednecessary for opening the supply circuit disconnecting means enclosure to accessexposed live parts. A safety sign shall be provided in accordance with Section 16.2.

Exception No. 2: Where a supply circuit disconnecting means supplying machines totaling 2 hp or lessis not located within or adjacent to the control enclosure it supplies, the control enclosure shall complywith 6.2.3.1 or 6.2.3.2. Where a supply disconnecting means is an attachment plug and receptacle, thecontrol enclosure it supplies shall comply with 6.2.3.2. Where compliance with 6.2.3.2 is required, asafety sign shall be provided in accordance with Section 16.2.

5.3.1.5

Where two or more supply circuit disconnecting means are provided within the control enclosure formultiple supply circuits, they shall be grouped in one location where practicable. Protective interlocks fortheir correct operation shall be provided where a hazardous condition or damage to the machine or to thework in progress can occur.

5.3.2 Type.

The supply circuit disconnecting device shall be one of the following types:

(1) A listed motor circuit switch (switch disconnector) rated in horsepower

(2) A listed molded case circuit breaker

(3) A listed molded case switch

(4) An instantaneous trip circuit breaker that is part of a listed combination motor controller limited tosingle motor applications

(5) A listed self-protected combination controller limited to single motor applications

(6) An attachment plug and receptacle (plug/socket combination) for cord connection

5.3.3 Requirements.

Detail SR-55


37 of 144 5/10/2017 3:40 PM

5.3.3.1*

Where the supply circuit disconnecting device is one of the types in 5.3.2(1) through 5.3.2(5), the deviceshall fulfill all of the following requirements:

(1) Isolate the electrical equipment from the supply circuit and have one off (open) and one on (closed)position only. Circuit breakers, instantaneous trip circuit breakers, molded-case switches, andself-protected combination motor controllers are permitted to have a reset (tripped) position betweenoff (open) and on (closed).

(2) Have an external operating means (e.g., handle) that complies with 5.3.4.

Exception: Power-operated switchgear need not be operable from outside the enclosure wherethere are other means to open it.

(3) Be provided with a permanent means permitting it to be locked in the off (open) position only (e.g.,by padlocks), independent of the door or cover position, that also prevents. When so locked, remoteas well as local closing into the (on)on position shall be prevented.

(4) Simultaneously disconnect all ungrounded conductors of the power supply circuit.

(5) Be operable by qualified persons independent of the door or cover position without the use ofaccessory tools or devices.

(6) Be rated for the application as follows:

(a) With an ampere rating at least 115 percent of the sum of the full-load currents required for allequipment that is in operation at the same time under normal conditions of use

(b) Where rated in horsepower, with a horsepower rating at least equal to that which is defined byTable 430.251(B) of NFPA 70 for a locked rotor current equal to the largest sum resulting fromthe locked rotor currents of any combination of motors that can be started simultaneously andthe full-load currents of the remaining motor and non-motor loads that can be operated at thattime

(c) With a voltage rating at least equal to the nominal supply circuit voltage

(7) Be of a type that plainly indicates whether it is in the off (open) or on (closed) position.

Global SR-1

5.3.3.2*

When the supply circuit disconnecting device is an attachment plug and receptacle (plug/socketcombination), it shall fulfill all of the following requirements:

(1) Have a load-break rating or be interlocked with a switching device that is load-break rated andcomplies with 5.3.3.1(6)

(2) Be listed as a switch-rated plug and receptacle (plug/socket combination) rated greater than 20amperes or 2 hp

(3) Be of such a type and be so installed as to prevent unintended contact with live parts at any time,even during insertion or removal of the connectors

(4) Have a first-make, last-break electrical grounding contact

(5) Have a retaining means to prevent unintended or accidental disconnection where rated at more than20 amperes

(6) Be located within sight from the operator station and be readily accessible

5.3.3.3

In addition to the requirements in 5.3.3.2, an additional switching device on the machine shall be providedfor routine power switching operations of the machine on and off.

5.3.4 Operating Handle.


38 of 144 5/10/2017 3:40 PM

5.3.4.1

The center of the grip of the operating handle of the supply circuit disconnecting means, when in itshighest position, shall be not more than 2.0 m (6 ft 7 in.) above the servicing level. A permanent operatingplatform, readily accessible by means of a permanent stair or ladder, shall be considered the servicinglevel for the purpose of this requirement.

5.3.4.2

An operating handle of the supply circuit disconnecting means required by 5.3.3.1 shall meet the followingcriteria:

(1) Be readily accessible with doors in the open or closed position

(2) Maintain the environmental rating of the enclosure to the degree necessary for the application wheninstalled through the control enclosure

(3) Not be restricted by the enclosure door when the door is in the open position

5.3.5 Excepted Circuits.

Detail SR-56

5.3.5.1

The following circuits shall not be required to be disconnected by the mainmachine supply circuitdisconnecting means:

(1) Lighting circuits for lighting needed during maintenance or repair

(2) Attachment plugs and receptacles (plug and socket outlets) for the exclusive connection of repair ormaintenance tools and equipment (e.g., hand drills, test equipment)

(3) Undervoltage protection circuits that are only used for automatic tripping in the event of supply circuitfailure

(4) Circuits supplying equipment that are requiredneed to remain energized for satisfactory operation[e.g., temperature-controlled measuring devices, product (work in progress) heaters, programstorage devices, inputs, non-motion outputs, and displays, and safety interlocks]

5.3.5.2

The supply Excepted circuits for excepted circuits shall be provided with all of the following:

(1) A disconnecting means, isolating transformer, and overcurrent protection mounted in an enclosureadjacent to the main control enclosure or within the control enclosure, adjacent to the main supplycircuit disconnecting means

(2) Line side (of the supply circuit disconnect) supply circuit conductors, when internal to the controlenclosure, that are separate from and do not share a raceway with other conductors and that areencased in rigid or flexible conduit if longer than 460 mm (18 in.)

5.3.5.3

The control interlocking circuits shall be capable of being disconnected at the control panel from whichthey are sourced.

5.3.5.4

Where the excepted circuits are not disconnected by the supply circuit disconnecting means, all of thefollowing requirements shall be met:

(1) Permanent safety sign(s) shall be placed adjacent to the supply circuit disconnecting operatinghandle(s), indicating that it does not de-energize all exposed live parts when it is in the open (off)(isolated) position as in 16.2.4.

(2) A statement containing the information from 16.2.4 shall be included in the machine documentation.

(3) A permanent safety sign shall be placed on a nonremovable part inside the control enclosure inproximity to each excepted circuit, or shall be identified by color as defined in 13.2.4.

5.4 Means for Removal of Power for Prevention of Unexpected Start-Up.


39 of 144 5/10/2017 3:40 PM

5.4.1

Means for removal of power shall be provided when prevention of unexpected start-up is required (e.g.,during maintenance where the unexpected start-up of a machine or part of the machine results in ahazardous situation). Such means shall be as follows :

(1) Appropriate for the intended use, and

(2) Conveniently located, and

(3) Readily identifiable as to their function and purpose, and

(4) Provided with permanent means for locking in the off position only

5.4.2

Removal of power shall be accomplished by the use of one of the following:

(1) The machine supply circuit disconnecting means

(2) Additional devices conforming to 5.3.2 or 5.5.4

(3) Other means (e.g., a contactor switched off by a control circuit) that meet the requirements of 5.4.3and 5.4.4

5.4.3*

Where other means of removal of power are used, a single failure of any of its components shall not resultin an inadvertent or unexpected start-up.

5.4.4

Other means of removal of power shall be employed only for situations that include the following:

(1) Routine exchange of work pieces, fixtures, and tools requiring no significant dismantling of themachine

(2) Work on the electrical equipment where all of the following conditions exist:

(a) There is no hazard arising from electric shock and burn.

(b) The switching off means cannot be negated by the work.

(c) The work is of a minor nature (e.g., replacement of plug-in devices without disturbing existingwiring).

(d) There is no hazard arising from the unexpected energizing or de-energizing of circuits.

5.5 Devices for Disconnecting (Isolating) Electrical Equipment.

5.5.1

Devices shall be provided for disconnecting (isolating) electrical equipment to enable work to beperformed when it is de-energized and isolated.

5.5.2

The machine supply circuit disconnecting device means (see Section 5.3) shall be permitted to fulfill thisrequirement where there is no need for disconnecting individual portions of the electrical circuit.

5.5.3

Where it is expected that it will be necessary to work on separately operable parts of a machine, adisconnecting means shall be permitted for the electrical equipment of each such part of the machinerequiring separate disconnection.


40 of 144 5/10/2017 3:40 PM

5.5.4

The following devices shall be permitted to fulfill the isolating function of 5.5.3:

(1) Devices described in 5.3.2

(2) A manual motor controller marked “suitable as motor disconnect” and in compliance with UL 508,Standard for Industrial Control Equipment , where located on the load side of the last short-circuitprotective device (in the branch)

(3) System isolation equipment that incorporates control lockout stations and is listed for disconnectionpurposes where located on the load side of the main supply circuit disconnecting means andovercurrent protection

5.5.5

Each operating means of the isolation devices in 5.5.4 shall be as follows:

(1) Readily accessible and complies with 5.3.4

Exception: Switches and circuit breakers installed adjacent to motors, appliances, or otherequipment that they supply shall be permitted to be accessible by portable means.

(2) Within sight of the part of the machine requiring disconnection

(3) Readily identifiable as an isolating means and marked to identify the equipment that is disconnected

(4) For other than attachment plugs, provided with permanent means for locking in the off position only




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The concept to replace the term “incoming” with “machine” clarifies the machine’s supply circuit isthe one that originates from the premises wiring. Adding the word “machine” before the words“supply circuit” clarifies to the users of the document which requirements apply to circuits supplyingthe machine and which requirements apply to other permitted circuits originating from the machine(load side of the machine supply circuit disconnecting means).

Other changes were made as necessary so the requirements read correctly and align with the newdefinition of a "Machine Supply Circuit."

In "show markup"

The parenthetical term "plug/socket", and the term "plainly" were also deleted to be consistent withtheir deletion in other sections.

Section 5.3.3.1 (6) (a), (b), and (c) were incorrectly renumbered and underlined and must berestored.

Section 5.4.4 (2) (a), (b), (c) and (d) were incorrectly renumbered and underlined and must berestored.

Revise Exception No. 1 to Section 5.3.1.4 as a separate ballotable detail SR-54


41 of 144 5/10/2017 3:40 PM

Revise text to Section 5.3.3.1 (3) as a separate ballotable detail SR-55

Revise Section 5.3.5.1 (4) as a separate ballotable detail SR-56

ResponseMessage:

Public Comment No. 30-NFPA 79-2016 [Section No. 5.3.1.1.2]




Public Comment No. 18-NFPA 79-2016 [Section No. 5.3.1 [Excluding any Sub-Sections]]

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



1 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.


42 of 144 5/10/2017 3:40 PM

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Abstention

Couch, Jim

Agree


43 of 144 5/10/2017 3:40 PM


7.2.10.1*


44 of 144 5/10/2017 3:40 PM

Each motor controller and its associated wiring shall be protected as an individual branch circuit by ashort-circuit protective device (SCPD) as specified by the controller manufacturer. The maximum rating ofthe designated SCPD shall be as shown in Table 7.2.10.1.

Exception No. 1: Table 7.2.10.1 shall not apply to Design B energy efficient motor circuits. Theprovisions of NFPA 70 shall be observed for Design B energy efficient motor circuits.

Exception No. 2: Where the controller is an adjustable speed drive that is listed and marked “Suitable forOutput Conductor Protection,” the maximum rating of the designated SCPD shall be permitted to bedetermined by replacing the full-load current in Table 7.2.10.1 with the drive’s rated input current. TheSCPD shall not exceed the rating marked on the adjustable speed drive or in the manufacturer’sinstructions.

Table 7.2.10.1 Maximum Rating or Setting of Fuse and Circuit Breakers: Motor, Motor Branch Circuit, andMotor Controller

Full-Load Current (%)

Fuse Class with Non–Time Delay AC-2 AC-3 AC-4

R 300 300 300

CF or J 300 300 300

CC 300 300 300

T 300 300 300

Type of Application2 a

Fuse Class with Time Delay1 b AC-2 AC-3 AC-4

RK-53 c 150 175 175

RK-1 150 175 175

CF or J 150 175 225

CC 150 300 300

Instantaneous trip circuit breaker4 d 800 800 800

Inverse trip circuit breaker5 e 150 250 250

Note: Where the values determined by this table do not correspond to the standard sizes or ratings, thenext higher standard size, rating, or possible setting shall be permitted.

2 a Types of starting duty are as follows:

(a) (1) AC-2: All light-starting duty motors, including slip-ring motors; starting, switching off

(b) (2) AC-3: All medium starting duty motors including squirrel-cage motors; starting, switching offwhile running, occasional inching, jogging, or plugging but not to exceed 5 operations per minute or 10operations per 10 minutes and all wye-delta and two-step autotransformer starting motors

(c) (3) AC-4: All heavy starting duty motors including squirrel-cage motors; starting, plugging, inching,jogging

1 b Where the rating of a time-delay fuse (other than CC type) specified by the table is not sufficient forthe starting of the motor, it shall be permitted to be increased but shall in no case be permitted to exceed225 percent. The rating of a time-delay Class CC fuse and non–time-delay Class CC, J, CF, or T fuseshall be permitted to be increased but shall in no case exceed 400 percent of the full-load current.

2 Types of starting duty are as follows:

(a) AC-2: All light-starting duty motors, including slip-ring motors; starting, switching off

(b) AC-3: All medium starting duty motors including squirrel-cage motors; starting, switching off whilerunning, occasional inching, jogging, or plugging but not to exceed 5 operations per minute or 10operations per 10 minutes and all wye-delta and two-step autotransformer starting motors

(c) AC-4: All heavy starting duty motors including squirrel-cage motors; starting, plugging, inching,jogging


45 of 144 5/10/2017 3:40 PM

3 c Unless a motor controller is listed for use with RK-5 fuses, Class RK-5 fuses shall be used only withNEMA-rated motor controllers.

4 d Instantaneous trip circuit breakers shall be permitted to be used only if they comply with all of thefollowing:

(a) (1) They are adjustable.

(b) (2) Part of the combination controller has motor-running protection, short-circuit protection, andground-fault protection in each conductor.

(c) (3) The combination is especially identified for use.

(d) (4) It is installed per any instructions included in its listing or labeling.

(e) (5) They are limited to single motor applications; circuit breakers with adjustable trip settings are tobe set at the controller manufacturer's recommendation, but not greater than 1300 percent of the motorfull-load current.

5 eWhere the rating of an inverse time circuit breaker specified in this table is not sufficient for the startingcurrent of the motor, it shall be permitted to be increased but in no case exceed 400 percent for full-loadcurrents of 100 amperes or less or 300 percent for full-load currents greater than 100 amperes.

7.2.10.1.1

A listed self-protected combination controller shall be permitted in lieu of the devices specified in Table7.2.10.1 for branch circuit and overload protection of a single motor circuit.

7.2.10.1.2

Where a listed self-protected combination controller has an adjustable, instantaneous trip setting, thesetting shall not exceed 1300 percent of full-load motor current for other than Design B energy efficientmotors and not more than 1700 percent of full-load motor current for Design B energy efficient motors.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The text has been revised to clarify that the exception is permitted to be used but notrequired.

The TC has considered the comments as directed by the CC and determined that noadditional revisions are required.

ResponseMessage:


Ballot Results


28 Eligible Voters


46 of 144 5/10/2017 3:40 PM

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


47 of 144 5/10/2017 3:40 PM


7.2.10.2

Several motors, each not exceeding 1 hp in rating, shall be permitted on a nominal 120-volt branch circuitprotected at not over 20 amperes or a 600-volt 1000-volt nominal or less branch circuit, protected at notover 15 amperes, where all of the following conditions are met:

(1) The full-load rating of each motor does not exceed 6 amperes.

(2) The rating of the branch-circuit short-circuit and ground-fault protective device marked on any of thecontrollers is not exceeded. The short-circuit and ground-fault protection is provided by a singleinverse time circuit breaker or single set of fuses.

(3) Individual overload protection conforms to Section 7.3.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

This comment is an output of the 1000V NFPA79 Task Group. The revised change alignswith 430.53(A) in the 2017 NEC.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.



48 of 144 5/10/2017 3:40 PM

Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


49 of 144 5/10/2017 3:40 PM



50 of 144 5/10/2017 3:40 PM

7.2.10.4

Two or more motors, or one or more motor(s) and other load(s), and their control equipment shall bepermitted to be connected to a single branch circuit where short-circuit and ground-fault protection isprovided by a single inverse time circuit breaker or a single set of fuses, provided the following conditionsunder 7.2.10.4(1) and either 7.2.10.4(2) or 7.2.10.4(3) are met:

(1) Each motor controller and overload device is either listed for group installation with specifiedmaximum branch-circuit protection or selected such that the ampere rating of the motor branch short-circuit and ground-fault protective device does not exceed that permitted by 7.2.10.1 for thatindividual motor controller or overload device and corresponding motor load.

(2) The rating or setting of the branch short-circuit and ground-fault protection device does not exceedthe values in Table 7.2.10.4 for the smallest conductor in the circuit.

Exception: Where a controller is an adjustable speed drive that is listed and marked “Suitable forOutput Conductor Protection,” the conductors from the drive to the motor shall not apply berequired to be used when determining the smallest conductor in the circuit. The conductors fromthe drive to the motor shall have an ampacity in accordance with Sections 12.5 and 12.6.

(3) The rating or setting of the branch short-circuit and ground-fault protection does not exceed the valuespecified in 7.2.10.1 for the highest rated motor connected to the branch circuit plus an amount equalto the sum of the full-load current ratings of all other motors and the ratings of other loads connectedto the circuit. Where this calculation results in a rating less than the ampacity of the branch circuitconductors, it shall be permitted to increase the maximum rating of the fuses or circuit breaker to avalue not exceeding that permitted by Sections 12.5 and 12.6. Overcurrent protection for loads otherthan motor loads shall be in accordance with 7.2.3, 7.2.4, and 7.2.11. Where 16 AWG or 18 AWGconductors are used for branch circuit conductors or tap conductors under 7.2.10.5, the rating andtype of the branch short-circuit and ground-fault protection shall be in accordance with 12.6.1.

Table 7.2.10.4 Relationship Between Conductor Size and Maximum Rating or Setting of Short-CircuitProtective Device for Power Circuits Group Installations

Conductor Size

(AWG)

Maximum Rating

Fuse or Inverse Time*

Circuit Breaker

(amperes)

18 See footnote.

16 See footnote.

14 60

12 80

10 100

8 150

6 200

4 250

3 300

2 350

1 400

0 500

2/0 600

3/0 700

4/0 800

*Maximum ratings and type of branch short-circuit and ground-fault protective devices for 16 AWG and 18AWG shall be determined in accordance with 12.6.1.



51 of 144 5/10/2017 3:40 PM



Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The Technical Committee has revised the text in exception No. 2 for clarity for application of asingle branch circuit supplying two or more motors, or one or more motor(s) and other load(s),and their control equipment .

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.


52 of 144 5/10/2017 3:40 PM

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


53 of 144 5/10/2017 3:40 PM


7.2.10.5

For group installations described in 7.2.10.4(3), the conductors of any tap supplying a single motor shallnot be required to have an individual branch-circuit short-circuit and ground-fault protective device,provided they comply with one of the following:

(1) No conductor to the motor shall have an ampacity less than that of the branch-circuit conductors.

(2) No conductor to the motor shall have an ampacity less than one-third that of the branch-circuitconductors, with a minimum in accordance with Sections 12.5 and 12.6, the conductors to the motoroverload device being not more than 7.5 m (25 ft) long and being suitably protected from physicaldamage in accordance with Chapter 13.

(3) Conductors from the point of the tap from the branch-circuit short-circuit and ground-fault protectivedevice to a listed manual motor controller additionally marked “Suitable for Tap Conductor Protectionin Group Installations” or to a branch circuit protective device shall be permitted to have an ampacitynot less than 1/10 the rating or setting of the branch-circuit short-circuit and ground-fault protectivedevice. The conductors from the controller to the motor shall have an ampacity in accordance withSections 12.5 and 12.6. The conductors from the branch-circuit short-circuit and ground-faultprotective device point of the tap to the controller shall (1) be enclosed either by an enclosedcontroller or by a raceway and be not more than 3 m (10 ft) long or (2) have an ampacity not less thanthat of the branch-circuit conductors.




Street Address:

City:

State:

Zip:


Committee Statement

Committee Statement:

The TC has revised the text to correlate with 430.53(D)(3) of NFPA 70 2017.

Response Message:


Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All




54 of 144 5/10/2017 3:40 PM

0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Hickman, Palmer L.



55 of 144 5/10/2017 3:40 PM


7.5.3 Restarting.

Upon restoration of the voltage or upon switching on the incoming machine supply circuit , automatic orunintentional restarting of the machine shall be prevented when such a restart causes a hazardouscondition.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Revising the text so it reads “machine supply circuit” clarifies the machine’s supply circuit originatesfrom the premises wiring. This clarification will assist readers of the document with determiningwhich requirements apply to the circuit supplying the machine and which requirements apply tocircuits originating from the machine (load side of the machine supply circuit disconnecting means).

ResponseMessage:

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


56 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


57 of 144 5/10/2017 3:40 PM


7.8.1 Surge Protection Protective Devices (SPDs).

SPDs shall be permitted to be provided for industrial machinery with safety interlock circuits to protectagainst the effects of overvoltages due to lightning or switching surges.



Organization: National Fire Protection Assoc

Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The technical committee revised the existing requirement in 7.8.1 to require an appropriate SPD forprotection of industrial machinery with safety interlock circuits to correlate with NFPA 70 670.6. Themanufacturer of the industrial machinery can determine what specific type of SPD is to be used toprovide the needed protection based on the installation and equipment design.

ResponseMessage:

Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


58 of 144 5/10/2017 3:40 PM


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Tamblingson, Jay

Trainor, Richard S.


Couch, Jim

Agree


Brungs, William

Mandatory requirements should include sufficient information to protect against vague interpretations on exactlywhat is required. In our opinion, the statement in this section is not so.

Szende, Andras

I disagree that an additional SPD requirement is the only solution and it may be an unnecessary burden for thedesigner.


59 of 144 5/10/2017 3:40 PM


7.9 Power Factor Correction Capacitor Overcurrent Protection.

Where capacitors are installed for motor power factor correction on circuits of 600 1000 volts, nominal,and under, overcurrent protection for the conductors shall be provided. Each capacitor cell or capacitorbank shall be protected against rupture of the individual cells. Protection included as a part of thecapacitor assembly shall be permitted.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The proposed change increases the voltage to 1000V to include all equipment covered bythe revised scope change.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


60 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


61 of 144 5/10/2017 3:40 PM


8.1.2 Connections.

Except at either the source or first disconnecting means of a grounded separately derived system,grounded conductors shall not be connected to the equipment grounding conductor.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The first use of the term grounded is unnecessary since an ungrounded separately derivedsystem does not contain a grounded conductor. This change improves clarity.

The TC reviewed the CC comments as directed by the CC.

ResponseMessage:



Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


62 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


63 of 144 5/10/2017 3:40 PM


8.2.1.1 Effective Ground Fault Ground-Fault Current Path.

All parts of the The effective ground fault ground-fault current path shall be capable of withstanding thehighest thermal and mechanical stress that can be caused by fault currents in that part of the circuit safelycarrying the maximum ground-fault current likely to be imposed on it from any point where a ground faultcould occur from the point of connection of the supply circuit conductors to the electrical equipment of themachine .




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The language accepted in the FR could be misunderstood. The proposed language isconsistent with the same requirement in 250.4 of NFPA 70.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


64 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


65 of 144 5/10/2017 3:40 PM

Second Revision No. 24-NFPA 79-2017 [ Section No. 8.2.1.2.2 ]

8.2.1.2.2

Where electrical devices are mounted on metal mounting panels that are located within nonmetallicenclosures, the metal mounting panels shall be effectively grounded. Where electrical devices aremounted on metal mounting panels that are located within nonmetallic enclosures, the metal mountingpanels shall be connected to an equipment grounding conductor or bonding jumper.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

This is an editorial change to address an inadvertent addition of a duplicate sentence duringthe transition to TerraView.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


66 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


67 of 144 5/10/2017 3:40 PM


8.2.1.3.1

For each machine supply circuit, an equipment grounding conductor terminal shall be provided in thevicinity of the associated phase conductor terminals and shall be connected to the equipment groundingconductor.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

“Shall be” is added to improve readability of the text. And "machine" is added Revising the text so itreads “machine supply circuit” clarifies the machine’s supply circuit originates from the premiseswiring. This clarification will assist readers of the document with determining which requirementsapply to the circuit supplying the machine and which requirements apply to circuits originating fromthe machine (load side of the machine supply circuit disconnecting means).

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


68 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


69 of 144 5/10/2017 3:40 PM


8.2.1.3.4

Where an auxiliary grounding electrode is specified, the by the industrial machinery manufacturer orprovider, a terminal shall accommodate this additional grounding electrode conductor.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

For other than custom built industrial machinery, the industrial machinery manufacturer has no wayof knowing if the installer or user will specify something. This will clarify that the additional terminalrequirement is only necessary to be provided by the industrial machinery manufacturer if theyspecify an auxiliary grounding electrode.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


70 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


71 of 144 5/10/2017 3:40 PM


8.2.3.2

Removing a device shall Equipment grounding conductors and bonding jumpers shall be installed in amanner such that removal of a wiring device, such as a receptacle or switch, does not interrupt thecontinuity of the equipment grounding conductor or bonding jumper conductor .




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Pressure connectors and terminal bars are devices and removing them would interrupt thecontinuity of the equipment grounding conductor. The intent of the requirement is to ensure thatdevices that are likely to be replaced, can be removed and replaced without losing the effectiveground fault path. The sentence is restructured to improve readability.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


72 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


73 of 144 5/10/2017 3:40 PM


8.2.3.4

Raceways, wireways, and cable trays shall not be used as equipment grounding or bondingconductors. Equipment containing energized conductors shall be provided with a separate wire-typeequipment grounding conductor or bonding jumper.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The structure of the language is revised to avoid leaving other types of equipment, such as anauxiliary gutters, from the list and instead provides the intended requirement in positive text.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


74 of 144 5/10/2017 3:40 PM


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


75 of 144 5/10/2017 3:40 PM


9.1.1.4

The source of supply for all control circuits shall be taken from the load side of the supply disconnectingmeans.

Exception: The power supply circuit to control Control circuits meeting the requirements of exceptedcircuits in 5.3.5.1(4)shall be permitted to be taken from the line side of the supply disconnecting meansor other power source.




Street Address:

City:

State:

Zip:


Committee Statement

Committee Statement: The TC removes the phrase "The power supply circuit to" from the exception for clarity.

Response Message:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


76 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


77 of 144 5/10/2017 3:40 PM


9.2.5.4 Stop by De-Energization.

Except for cycle stop commands (stop by energization), stop functions shall be initiated byde-energization, not energization of a device or as a command to a programmable logic controller(PLC).




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The new requirement has been deleted because it is unclear as to the extent of stop commands itcovers and in its reference to the use of Safety PLC's for issuing of stop commands. Stopping byde-energization is presently mentioned in Annex H.2 as one component for minimizing theprobability of control function failure.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.


78 of 144 5/10/2017 3:40 PM

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


79 of 144 5/10/2017 3:40 PM

Second Revision No. 42-NFPA 79-2017 [ Section No. 9.2.5.5.2.2 ]

9.2.5.4.2.2

Emergency switching off shall be accomplished by disconnecting the incoming machine supply circuit ofthe machine effecting a Category 0 stop. Where the machine cannot tolerate the Category 0 stop, it shallbe necessary to provide other protection (e.g., against direct contact), so that emergency switching off isnot necessary.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:


ResponseMessage:

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


80 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


81 of 144 5/10/2017 3:40 PM


11.2.1.10

Busbars shall be securely fastened in place and the . The minimum spacing between uninsulated parts ofbusbars, busbar terminals, and other bare metal parts for busbars in feeder circuits shall not be less thanspecified in Table 430.97(D) of NFPA 70.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The requirement has been revised to indicate the increased spacing is only required forbusbars located in feeder circuits.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


82 of 144 5/10/2017 3:40 PM


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


83 of 144 5/10/2017 3:40 PM


11.4.8.1

When this is not practicable, it It shall be permissible to place a pocket that is suitable for the environmentoutside the door of the control enclosure or compartment in a well-identified location.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The TC removes "When it is practicable" to allow the print pocket to be located elsewhere.Someone should not need to open an enclosure, possibly exposing themselves to hazards.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


84 of 144 5/10/2017 3:40 PM


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


85 of 144 5/10/2017 3:40 PM

Second Revision No. 34-NFPA 79-2017 [ Section No. 11.5 [Excluding any Sub-Sections]

]

Access and working space for control cabinets and compartments operating at 600 1000 volts, nominal, orless to ground and likely to require examination, adjustment, servicing, or maintenance while energizedshall comply with the provisions of Chapter 11. Sufficient access and working space shall be provided andmaintained around all control cabinets and compartments to permit ready and safe operation andmaintenance of such control cabinets and compartments. Working space for cabinets and compartmentsthat contain supply conductors to industrial machinery that are covered by Article 670 of NFPA 70 shall bein accordance with the NEC.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The TC changed the requirement to increase the voltage to 1000V to include all equipmentcovered by the revised scope change and aligns with the 2017 edition of NFPA 70.

ResponseMessage:

Public Comment No. 76-NFPA 79-2016 [Section No. 11.5 [Excluding any Sub-Sections]]

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All


86 of 144 5/10/2017 3:40 PM

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


87 of 144 5/10/2017 3:40 PM


11.5.1.1

The depth of the working space in the direction of access to live parts shall not be less than indicated inTable 11.5.1.1. Distances shall be measured from the control cabinet or compartment front or opening.

Table 11.5.1.1 Working Space Depth

Minimum Clear Distance

Nominal Voltage to Ground Condition 1 Condition 2 Condition 3

0–150 914 900 mm (3 ft) 914 900 mm (3 ft) 914 900 mm (3 ft)

151–600 914 900 mm (3 ft) 1.07 1.0 m (31⁄2 ft) 1.22 1.2 m (4 ft)

601–1000 900 mm (3 ft) 1.2 m (4 ft) 1.5 m (5 ft)

Note: Where the conditions are as follows:

Condition 1 — Exposed live parts on one side and no live or grounded parts on the other side of theworking space, or exposed live parts on both sides effectively guarded by insulating materials. Insulatedwire or insulated busbars operating at not over 300 volts to ground shall not be considered live parts.

Condition 2 — Exposed live parts on one side and a grounded surface on the other side. Concrete, brick,or tile walls shall be considered as grounded.

Condition 3 — Exposed live parts on both sides of the working space (not guarded as provided inCondition 1) with the operator between.

Exception No. 1: Working space shall not be required in back or sides of control cabinets orcompartments, where there are no renewable or adjustable parts on the back or sides and where allconnections are accessible from locations other than the back or sides. Where rear access is required towork on de-energized parts on the back of enclosed control cabinet and compartment, a minimumworking space of 762 mm (2 1⁄2 ft) horizontally shall be provided.

Exception No. 2: By special permission, working space clearance depth of 762 mm (21⁄2 ft) or less shallbe permitted where all uninsulated parts are at a voltage no greater than 50 volts rms ac or 60 volts dc.

Exception No. 3: Condition 2 working clearance depth shall be permitted between control cabinets orcompartments located across the aisle from each other or across from non-machinery-associatedswitchgear, panelboards, or motor control centers where conditions of maintenance and supervisionensure that written procedures have been adopted to prohibit the affected equipment doors on bothsides of the aisle from being open at the same time and qualified persons who are authorized willservice the installation.

Exception No. 4: Condition 1 working clearance depth shall be permitted between control cabinets orcompartments located across the aisle from each other, or across from a grounded surface, where allassociated control cabinet or compartment devices and equipment operating at greater than 50 voltsrms ac or 60 volts dc are separately enclosed, guarded, or constructed so that openings to live parts ofthe devices and equipment will not permit the entry of a 12.5 mm (0.5 in.) diameter rod.

Exception No. 5: By special permission, the minimum working space clearance depth of 762 mm (21⁄2 ft)shall be permitted where all of the following conditions are met:

(1) The control cabinet or compartment is operating at not over 150 volts line-to-line or line-to-ground.

(2) The conditions of maintenance and supervision ensure that only qualified persons will service theinstallation.

(3) The control cabinet and compartment require a tool to open.

(4) Where only diagnostic troubleshooting and testing on live parts are involved.

(5) The door(s) of the control cabinet and compartment open at least 90 degrees or are removable.


88 of 144 5/10/2017 3:40 PM

Supplemental Information

File Name Description Approved

11.5.1.1_screen_shot_table.jpg 11.5.1.1 table updated




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

This comment is an output of the 1000V NFPA 79 Task Group. The proposed change increasesthe voltage to 1000V to include all equipment covered by the revised scope change and alignswith the 2017 NEC changes to Table 110.26(A)(1).

One issue the task group identified to be addressed is if the working distances apply to theincoming source voltage or to any working voltage present in the panel including DC voltages.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul


89 of 144 5/10/2017 3:40 PM

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


90 of 144 5/10/2017 3:40 PM


12.5.5

Conductors supplying a single motor or multiple motors shall be permitted to be sized based on 125percent of the highest rated motor at demand factors based on the loading or application of the motors.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The TC has considered the negative comments expressed during voting as directed by the CCand deleted the requirement as it can result in smaller unprotected conductors.

ResponseMessage:



Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


91 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


92 of 144 5/10/2017 3:40 PM


13.2.2.1*

The color GREEN with or without one or more YELLOW stripes shall be used to identify the equipmentgrounding conductor where insulated or covered. This color identification shall be strictly reserved for theequipment grounding conductor. GREEN shall be the predominant color when used in combination withone or more YELLOW stripes.

Exception No. 1: Conductors with green insulation or insulation that is green with one or more yellowstripes shall be permitted to be used for other than equipment grounding purposes where all of thefollowing conditions are met:

(1) The conductor is part of a multiconductor cable.

(2) The multiconductor cable containing the conductor contains only circuits supplied from a sourcelimited to less than 50 volts.

(3) The multiconductor cable containing the conductor contains only circuits supplied from a sourcelimited to no more than a power-limited Class 2 energy level.

(4) The conductor is reidentified at all accessible locations, or the multiconductor cable is part of alisted assembly.

Exception No. 2: It shall be permitted to use conductors of any color, provided the insulation or cover isappropriately identified at all points of access.

Exception No. 3: For grounded control circuits, use of a GREEN insulated conductor with or without oneor more YELLOW stripes or a bare conductor from the transformer terminal to a grounding terminal onthe control panel shall be permitted.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

This action reinstates and revises Exception 1 that was removed in the First Revision Meeting. Therevision addresses the concerns that low-energy equipment supplied from an ungrounded sourceshould not place a restriction on the use of the green conductor in a multiconductor cable. Thechanges correlate with the language in Section 250.119 of NFPA 70 as directed by the CC. Thechanges provide necessary restrictions on use of green conductors to address the substantiation forremoving the exception in FR 39.

ResponseMessage:


Public Comment No. 90-NFPA 79-2016 [New Section after 13.2.2.1]



93 of 144 5/10/2017 3:40 PM

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William


94 of 144 5/10/2017 3:40 PM

Agree

Couch, Jim

Agree


95 of 144 5/10/2017 3:40 PM


14.8 Direction Arrow.

Where reverse rotation produces an unsafe condition or causes damage to connected equipment, adirection arrow shall be installed. The arrow shall be adjacent to the motor and plainly visible.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Using the term “plainly” before “visible” does not help with enforcing or interpreting a visibilityrequirement nor does it add any clarity to the requirement. Whether something is “visible” can onlybe judged based on the specific application.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


96 of 144 5/10/2017 3:40 PM


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Hickman, Palmer L.

The Correlating Committee should review this action and this term.


97 of 144 5/10/2017 3:40 PM

Second Revision No. 36-NFPA 79-2017 [ New Section after 14.9 ]

14.10 Motor Controllers.

Motor controllers shall be provided in accordance with Article 430, Part VII, of NFPA 70 .




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Presently, specific guidance on selecting motor controllers is missing in NFPA 79. Motor overloadprotection is specified to be provided using Article 430 of NFPA 70, Part III in NFPA 79 7.3.1.Transformer protection is required to be provided using NEC Article 450, Part IV in NFPA 79 7.2.7.Motor controllers should have a similar more specific reference other than NFPA 79 1.5 which sendsyou back to NFPA 70.

ResponseMessage:

Public Comment No. 55-NFPA 79-2016 [New Section after 14.9]

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


98 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


99 of 144 5/10/2017 3:40 PM

Second Revision No. 11-NFPA 79-2017 [ Sections 16.2.2, 16.2.3 ]

16.2.2

Safety signs shall be plainly visible on the enclosure door or cover.

16.2.3*

Electrical equipment for industrial machines, such as industrial control panels and the enclosures ofdisconnecting devices, shall be marked with a safety sign in accordance with ANSI Z535.4, ProductSafety Signs and Labels , to warn qualified persons of potential electric shock and arc flash hazards.

16.2.3.1

The marking shall be located so as to be plainly visible to qualified persons before examination,adjustment, servicing, or maintenance of the equipment.

16.2.3.2

It shall be permitted to omit safety signs where the size of the enclosure precludes placement of the labelon the enclosure (e.g., operator–machine interfaces, control stations, position sensors).




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:


ResponseMessage:



Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention


100 of 144 5/10/2017 3:40 PM

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Hickman, Palmer L.



101 of 144 5/10/2017 3:40 PM


16.4.1

Control equipment shall be legibly and durably marked in a way that is plainly visible after the equipmentis installed. A nameplate giving the following information shall be attached to the outside of the enclosure,or on the machine immediately adjacent to the enclosure:

(1) Name or trademark of supplier

(2) Model, serial number, or other designation

(3)

(4) Ampere rating of the largest motor or load

(5) Maximum ampere rating of the short-circuit and ground-fault protective device, where provided

(6) Short-circuit current rating of the industrial control panel

(7) Electrical diagram number(s) or the number of the index to the electrical drawings




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:


ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

* Rated voltage, number of phases and frequency (if ac), and full-load current for each supply


102 of 144 5/10/2017 3:40 PM

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Hickman, Palmer L.



103 of 144 5/10/2017 3:40 PM


16.4.2

The full-load current shown on the nameplate shall not be less than the full-load currents for all motorsand other equipment that can be in operation at the same time under normal conditions of use, designload, and duty cycle . Where unusual loads or duty cycles require oversized conductors, the requiredcapacity shall be included in the full-load current specified on the nameplate.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The proposed text addresses the concerns expressed in PI 113 without always requiringmeasurement of input current.

ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


104 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


105 of 144 5/10/2017 3:40 PM


16.4.3

Where more than one incoming machine supply circuit is to be provided, the nameplate shall state theinformation in 16.4.1 for each circuit.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:


ResponseMessage:

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


106 of 144 5/10/2017 3:40 PM


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


107 of 144 5/10/2017 3:40 PM


16.4.4

Where only a single motor or motor controller is used, the motor nameplate shall be permitted to serve asthe electrical equipment nameplate where it is plainly visible.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:


ResponseMessage:


Ballot Results


28 Eligible Voters

3 Not Returned

22 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


108 of 144 5/10/2017 3:40 PM


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree

Hickman, Palmer L.



109 of 144 5/10/2017 3:40 PM

Second Revision No. 29-NFPA 79-2017 [ Sections 18, 18 ]

Chapter 18 Testing and Verification

18.1* General.

The verification of the continuity of the equipment grounding circuit effective ground-fault current pathshall be conducted and documented. When the electrical equipment is modified, the requirements inSection 18.7 shall apply. Applicable tests shall be performed where deemed necessary in accordance withthe references in the following list:

(1) Verification that the electrical equipment is in compliance with the technical documentation (seeChapter 17)

(2) Insulation resistance test (see Section 18.3)

(3) Voltage test (see Section 18.4)

(4) Protection against residual voltages test (see Section 18.5)

(5) Functional test (see Section 18.6)

18.2* Continuity of the Equipment Grounding Circuit Effective Ground-Fault Current Path .

One of the following methods shall be used to verify the continuity of the equipment groundingcircuit effective ground-fault current path :

(1) Use Using an impedance measuring device, take into account any impedance in the measuringcircuit. The measured impedance shall be 0.1 ohm or less.

(2) Apply a current of at least 10 amperes, 50 Hz or 60 Hz, derived from a an SELV source. The testsare to be made between the equipment grounding terminal and relevant points that are part of theequipment grounding circuit effective ground-fault current path ; the measured voltage between theequipment grounding terminal and the points of test is not to exceed the values given in Table 18.2.

Table 18.2 Verification of Continuity of the Equipment Grounding Circuit Effective Ground-Fault CurrentPath

Minimum Equipment Grounding Conductor Cross-Sectional Area of theBranch Under Test

(AWG)

MaximumMeasured

Voltage Drop*

(V)

18 3.3

16 2.6

14 1.9

12 1.7

10 1.4

>8 1.0

*Values are given for a test current of 10 amperes.

18.3 Insulation Resistance Tests.

The insulation resistance measured at 500 volts dc between the power circuit conductors and theequipment grounding circuit effective ground-fault current path shall not be less than 1 megohm. The testshall be permitted to be made on individual sections of the machine.


110 of 144 5/10/2017 3:40 PM

18.4* Voltage Tests.

The machine shall withstand without breakdown a test voltage gradually applied from 0 volts to 1500 voltsac or 2121 volts dc and held at the maximum value for a period of at least 1 second between theconductors of all primary circuits and the equipment grounding circuit effective ground-fault current path .The test voltage shall be supplied from an isolated power supply with a minimum rating of 500 voltamperes. Components that are not rated to withstand the test voltage shall be disconnected duringtesting.

18.5 Protection Against Residual Voltages.

Residual voltage tests shall be performed to ensure compliance with Section 6.5.

18.6 Functional Tests.

The functions of electrical equipment, particularly those related to safety and safeguarding, shall betested.

18.7 Retesting.

Where a portion of the machine and its associated equipment is changed or modified, that portion shall bereverified and retested as appropriate.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The changes in terms made in Chapter 8 during the first revision meeting with FR 29, placedthe terminology in Chapter 18 in conflict. These changes make the document consistent.

ResponseMessage:

Public Comment No. 85-NFPA 79-2016 [Sections 18, 18]

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.



111 of 144 5/10/2017 3:40 PM

Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

We believe that the requirements in this section are based on a fixed-footprint machine. In material handlingsystems, there can be literally miles of conveyor. Ensuring an impedance of 0.1 ohms or less in Section 18.2 is notlegitimate on these types of systems, both in numerical level as well as testing methods.

Couch, Jim

Agree


112 of 144 5/10/2017 3:40 PM


19.4 Contactor.

Where a contactor is installed ahead of the incoming supply conductors to the servo drive, the contactorcurrent rating shall not be less than 115 percent of the maximum servo drive nameplate rating or shall besized in accordance with the manufacturer's specifications.




Street Address:

City:

State:

Zip:


Committee Statement

Committee Statement: The TC removed the term "incoming" to be consistent with other sections.

Response Message:

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul


113 of 144 5/10/2017 3:40 PM

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


114 of 144 5/10/2017 3:40 PM

Second Revision No. 45-NFPA 79-2017 [ Section No. A.5.1.1 ]

A.5.1.1

For large complex machinery comprising a number of widely spaced machines working together in acoordinated manner, more than one incoming machine supply circuit might be needed, depending uponthe site supply circuit arrangements (see 5.3.1).




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:


ResponseMessage:

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry


115 of 144 5/10/2017 3:40 PM

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


116 of 144 5/10/2017 3:40 PM

Second Revision No. 46-NFPA 79-2017 [ Section No. A.11.5 ]

A.11.5

Figure A.11.5 identifies the requirements for determining the working spaces for electrical equipmentassociated with industrial machinery.

Figure A.11.5 Clarification of Working Space Requirements at the Termination Location ofIncoming Machine Supply Circuit Conductors.

The left side of Figure A.11.5 depicts a situation where the incoming machine supply circuit disconnectingmeans, required by 5.3.1.1, is located in the industrial machine control panel or compartment.

The right side of Figure A.11.5 depicts a situation where the incoming machine supply circuitdisconnecting means, required by 5.3.1.1, is externally mounted to the industrial machine control cabinetor the compartment it supplies.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:


ResponseMessage:

Ballot Results



117 of 144 5/10/2017 3:40 PM

28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


118 of 144 5/10/2017 3:40 PM


119 of 144 5/10/2017 3:40 PM

Second Revision No. 47-NFPA 79-2017 [ Section No. B.1 ]


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B.1


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It is recommended that the information in Figure B.1 be provided by the intended user of the equipment. Itfacilitates an agreement between the user and supplier on basic conditions and additional userrequirements to ensure proper design, application, and utilization of the electrical equipment of themachine (see Section 4.1).

Figure B.1 Inquiry Form for the Electrical Equipment of Machines.


122 of 144 5/10/2017 3:40 PM




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:


ResponseMessage:

Ballot Results


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned


123 of 144 5/10/2017 3:40 PM

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


124 of 144 5/10/2017 3:40 PM

Second Revision No. 51-NFPA 79-2017 [ Section No. D.1 ]


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D.1


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Figure D.1(a) through Figure D.1(q) are not intended to be (design) guidelines. They are included only toillustrate documentation methods.

Figure D.1(a) Cover Sheet and Sheet Index.

Figure D.1(b) System Layout and Installation Diagram.

Figure D.1(c) Block (System) Diagram.

Figure D.1(d) Interconnection Diagram.


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Figure D.1(e) Elementary Schematic.

Figure D.1(f) PLC Input Diagram.


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Figure D.1(g) PLC Output Diagram.


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Figure D.1(h) Sample Enclosure Layout — Interior.

Figure D.1(i) Sample Enclosure Layout — Exterior.


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Figure D.1(j) Sequence of Operations — Graphical.

Figure D.1(k) Sequence of Operations — Descriptive Graphical.

Figure D.1(l) Sample Servo Diagram.


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Figure D.1(m) Sample PLC Network — Station Layout.


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Figure D.1(n) Sample Operator Station.


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Figure D.1(o) Sample Parts List.

Figure D.1(p) ISO (A2) Drawing Standard Framework.


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Figure D.1(q) Selections from ANSI Y32.2/IEEE 315 Symbol Table.


135 of 144 5/10/2017 3:40 PM




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

Delete the term "duct" and replace with "wireway" in D.1 b. The committee agreed to do this asindicated in the Committee Statement to FR 50 for the 2015 edition. The terms described do notalways match the term they follow as many times they are not directly interchangeable. Annex J wasadded in the 2015 edition to help users understand the differences between terms used in otherstandards. Disregard the strikeouts.

ResponseMessage:

Public Comment No. 57-NFPA 79-2016 [Section No. D.1]

Public Comment No. 43-NFPA 79-2016 [Section No. D.1]

Ballot Results


136 of 144 5/10/2017 3:40 PM


28 Eligible Voters

3 Not Returned

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree


137 of 144 5/10/2017 3:40 PM

Couch, Jim

Agree


138 of 144 5/10/2017 3:40 PM

Second Revision No. 52-NFPA 79-2017 [ Section No. K.1 ]

K.1 Referenced Publications.

The documents or portions thereof listed in this annex are referenced within the informational sections ofthis standard and are not part of the requirements of this document unless also listed in Chapter 2 forother reasons.

K.1.1 NFPA Publications.

National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471.

NFPA 70®, National Electrical Code®, 2017 edition.

NFPA 70E®, Standard for Electrical Safety in the Workplace®, 2015 2018 edition.

NFPA 77, Recommended Practice on Static Electricity, 2014 edition.

K.1.2 Other Publications.

K.1.2.1 ANSI Publications.

American National Standards Institute, Inc., 25 West 43rd Street, 4th Floor, New York, NY 10036.

ANSI B11.0, Safety of Machinery — General Requirements and Risk Assessment , 2010 2015 .

ANSI B11-TR4, Selection of Programmable Electronic Systems (PES/PLC) for Machine Tools, 2004.

ANSI B11-TR6, Safety Control Systems for Machine Tools, 2010.

ANSI Z535.4, Product Safety Signs and Labels, 2011.

K.1.2.2 CENELEC Publications.

CENELEC, European Committee for Electrotechnical Standardization, CENELEC Management Centre,Avenue Marnix 17, 4th floor, B - 1000 Brussels.

BS EN 60204-1, Safety of machinery — Electrical equipment of machines — Part 1: Generalrequirements, corrigendum, 2010 2017 .

BS EN 61010-1, Safety requirements for electrical equipment for measurement, control, and laboratoryuse — Part 1: General requirements,2010, corrigendum, 2011 2017 .


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K.1.2.3 IEC Publications.


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International Electrotechnical Commission, 3, rue de Varembé, P.O. Box 131, CH-1211 Geneva 20,Switzerland.

IEC 60034-1 Ed. 12.0, Rotating electrical machines — Part 1: Rating and performance, 2010.

IEC 60072-1 Ed. 6.0, Dimensions and output series for rotating electrical machines — Part 1: Framenumbers 56 to 400 and flange numbers 55 to 1080, 1991.

IEC 60204-1 Ed. 5.1 6.0 , Safety of machinery — Electrical equipment of machines — Part 1: Generalrequirements, 2009 2016 .

IEC 60332-1-1 Ed. 1.1, Tests on electric and optical fibre cables under fire conditions — Part 1-1: Test forvertical flame propagation for a single insulated wire or cable apparatus, 2015.

IEC 60364-4-41 Ed. 5.0, Electrical installations of buildings — Part 4-41: Protection for safety —Protection against electric shock, 2005.

IEC 60364-5-53 Ed. 3.2, Electrical Installations of buildings — Part 5-53: Selection and erection ofelectrical equipment — Isolation, switching and control, 2015.

IEC 60417 DB [Database], Graphical symbols for use on equipment — Part 1: Overview and application,2002.

IEC 60529 Ed. 2.2, Degrees of protection provided by enclosures (IP Code), 2013, corrigendum 2, 2015.

IEC 60621-3 Ed. 1.0, Electrical installations for outdoor sites under heavy conditions (including open-castmines and quarries) — Part 3: General requirements for equipment and ancillaries, 1979 (withdrawn).

IEC 60742 Ed. 1.0, Isolating transformers and safety isolating transformers, 1983 (superseded by IEC61558-1).

IEC 60870-5-1 Ed. 1.0, Telecontrol equipment and systems — Part 5: Transmission protocols — SectionOne: Transmission frame formats, 1990.

IEC 60947-4-1 Ed. 3.1, Low-voltage switchgear and controlgear — Part 4-1: Contactors and motor-starters — Electromechanical contactors and motor-starters, 2012.

IEC 60947-5-1 Ed. 3.1, Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices andswitching elements — Electromechanical control circuit devices, 2009.

IEC 60947-7-1 Ed. 3.0, Low-voltage switchgear and controlgear — Part 7-1: Ancillary equipment —Section 1: Terminal blocks for copper conductors, 2009.

IEC 61010-1 Ed. 3.0, Safety requirements for electrical equipment for measurement, control, andlaboratory use — Part 1: General requirements, 2010.

IEC 61310-1 Ed. 2.0, Safety of machinery — Indication, marking and actuation — Part 1: Requirementsfor visual, auditory and tactile signals, 2007.

IEC 61310-3 Ed. 2.0, Safety of machinery — Indication, marking and actuation — Part 3: Requirementsfor the location and operation of actuators, 2007.

IEC 61508 Ed. 2.0, [Series] Functional safety of electrical/electronic/programmable electronic safety-related systems, 2010.

IEC 61558-1 Ed. 2.1, Safety of power transformers, power supply units and similar — Part 1: Generalrequirements and tests, 2011.

IEC 61800-5-2 Ed. 1.0, Adjustable speed electrical power drive systems — Part 5-2: Safety requirements— Functional, 2007.

IEC 62061 Ed. 1.2, Safety of machinery — Functional safety of electrical, electronic and programmablecontrol systems, 2015, corrigendum 1, 2015.

NOTE: The IEC publishes consolidated editions of its publications with all the amendments andcorrigenda included with the base document. For example:

Edition 1.0 is a base document without any amendments.

Edition 1.1 is the base 1.0 edition consolidated with one amendment.

Edition 1.2 is the base 1.0 edition consolidated with two amendments.

Edition 2.0 is the second edition of a base document. This may include new information combined as wellas amendments from edition 1.x.


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Edition 2.1 is the second edition of a document consolidated with amendment 1 to that edition.

K.1.2.4 IEEE Publications.

IEEE, 3 Park Avenue, 17th Floor, New York, NY 10016-5997.

IEEE 100 CD, The Authoritative Dictionary of IEEE Standard Terms, 2013.

ANSI Y32.2/IEEE 315, IEEE Graphic Symbols for Electrical and Electronics Diagrams (IncludingReference Designation Letters), 1993.

IEEE 841, Petroleum and Chemical Industry — Premium-Efficiency, Severe-Duty, Totally EnclosedFan-Cooled (TEFC) Squirrel Cage Induction Motors — Up to and Including 370 kW (500 hp), 2009.

K.1.2.5 ISO Publications.

International Organization for Standardization, ISO Central Secretariat, BIBC II, 8, Chemin de Blandonnet,CP 401, 1214 Vernier, Geneva, Switzerland.

ISO 7000, Graphical symbols for use on equipment — Registered symbols, 2014.

ISO 12100, Safety of machinery — General principles for design — Risk assessment and risk reduction,2010.

ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principlesfor design, 2006, corrigendum 1, 2009.

ISO 13849-2, Safety of machinery — Safety-related parts of control systems — Part 2: Validation, 2012.

ISO 13850, Safety of machinery — Emergency stop function — Principles for design, 2015.

K.1.2.6 NEMA Publications.

National Electrical Manufacturers Association, 1300 North 17th Street, Suite 900, Arlington, VA 22209.

NEMA MG-1, Motors and Generators, 2014.

NEMA 250, Enclosures for Electrical Equipment (1000 Volts Maximum), 2014.

K.1.2.7 SEMI Publications.

Semiconductor Equipment and Materials International, 3081 Zanker Road, San Jose, CA 95134.

SEMI S2, Environmental, Health, and Safety Guideline for Semiconductor Manufacturing Equipment,2010.

SEMI S9, Safety Guideline for Electrical Design Verification Tests for Semiconductor ManufacturingEquipment, 2001 (withdrawn 2007).

SEMI S22, Safety Guideline for the Electrical Design of Semiconductor Manufacturing Equipment, 2010.


142 of 144 5/10/2017 3:40 PM

K.1.2.8 UL Publications.

Underwriters Laboratories Inc., 333 Pfingsten Road, Northbrook, IL 60062-2096.

UL 50, Standard for Enclosures for Electrical Equipment, 2007, revised 2015.

UL 62, Standard for Flexible Cord and Fixture Wire, 2010, revised 2014.

UL 248-14, Standard for Low-Voltage Fuses — Part 14: Supplemental Fuses, 2000, revised 2015.

UL 489, Standard for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-BreakerEnclosures, 2009, revised 2014.

UL 498, Standard for Attachment Plugs and Receptacles, 2012, revised 2014.

UL 508, Standard for Industrial Control Equipment, 1999, revised 2013.

UL 508A, Standard for Industrial Control Panels, 2001, revised 2014.

UL 651, Standard for Schedule 40 and 80, EB and A Rigid PVC Conduit and Fittings, 2011, revised 2014.

UL 758, Appliance Wiring Material, 2014, revised 2014.

UL 1004-1, Standard for Rotating Electrical Machines, 2012, revised 2015.

UL 1077, Standard for Supplementary Protectors for Use in Electrical Equipment, 2005, revised 2015.

UL 1682, Plugs, Receptacles, and Cable Connectors of the Pin and Sleeve Type, 2013, revised 2013.

UL 60950-1, Information Technology Equipment — Part I: General Requirements, 2007, revised 2014.

UL 2237 Outline, Outline of Investigation for Multi-Point Interconnection Power Cable Assemblies forIndustrial Machinery, 2015.

UL 2238, Cable Assemblies and Fittings for Industrial Control and Signal Distribution , 2011.

IEC/UL 61010 61010A-1 , Electrical Equipment for Measurement, Control and Laboratory Use — Part 1:General Requirements, 2014.

UL 61010-1, UL Standard for Safety Electrical Equipment For Measurement, Control, and Laboratory Use— Part 1: General Requirements, 2004, revised 2015.




Street Address:

City:

State:

Zip:


Committee Statement

CommitteeStatement:

The TC updated edition dates and corrected the title of ANSI B11.0 which addressed theCC comments.

Response Message:

Public Comment No. 29-NFPA 79-2016 [Section No. K.1]

Ballot Results


28 Eligible Voters

3 Not Returned


143 of 144 5/10/2017 3:40 PM

23 Affirmative All



0 Abstention

Not Returned

Mulherrin, Sean

Titus, J. B.


Affirmative All

Bas, Luis M.

Boggs, Barry

Carpenter, David R.


Dobrowsky, Paul

Douglas, Stephen W.

Drobnick, Drake A.

Egloff, Matt

Gray, Bobby J.

Gruendel, Robert

Hayes, James B.

Hickman, Palmer L.

Hilbert, Mark R.

Kovacik, John R.

Mariuz, Dino

Mohla, Daleep C.

Neeser, Daniel R.

Nguyen, Thi

Schreck, George M.

Soter, Mike

Szende, Andras

Tamblingson, Jay

Trainor, Richard S.


Brungs, William

Agree

Couch, Jim

Agree


144 of 144 5/10/2017 3:40 PM

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