ELECTRICAL CODE CLARIFICATION · electrical code clarification. 700 n. tryon street charlotte, nc...

ELECTRICAL CODE CLARIFICATION2145 SUTTLE AVENUE, CHARLOTTE, NC 28208

(980) 314-CODE

SUBJECT:

CODE REFERENCE:

SUBMITTED BY:

EFFECTIVE DATE:

PROBLEM:

SOLUTION:

Aluminum and Copper-clad Aluminum Grounding Electrode

Conductors

Policy and NEC 250.64(A)

Electrical Department

Immediately

Aluminum and copper-clad aluminum grounding electrode

conductors installed in corrosive conditions.

Aluminum and copper-clad aluminum grounding electrode

conductors installed in unsealed crawl spaces (exposed earth)

will not be allowed within 18 inches of the earth.

APPROVED BY: GERALD HARVELL ELECTRICAL CPM

5.6

ELECTRICAL CODE CLARIFICATION

700 N. TRYON STREET CHARLOTTE, NC 28202

(704) 336-2831

SUBJECT: Cables In Accessible Attics

CODE REFERENCE: Policy

SUBMITTED BY: Electrical Department

EFFECTIVE DATE: Immediately

PROBLEM: How do I install cables in an accessible attic without requiring

protection?

SOLUTION: The code clearly states that all cables in attics that are

accessible by permanent stairs will be protected, however if

cables are installed in the area where there is no more than 3 ft

of clearance from the ceiling joist to the rafter it will be

accepted. Any other installation will be at the discretion of the

inspector.

APPROVED BY: GERALD HARVELL ELECTRICAL CPM FEB/2006

2.8

Electrical CODE INTERPRETATION

Subject: Attic / Storage Light

Submitted By: Electrical Department

Effective Date: Immediately

Problem: When is a light required in an attic storage area?

Solution: Attic spaces of less than six feet (6’), in depth or height, shall not be considered as attic storage requiring a lighting outlet.

Prepared by: Consistency Team

Approved by:

Joe Weathers Electrical Code Administrator

MECKLENBURG COUNTY Land Use and Environmental Services Agency

Code Enforcement

Code Chapter Reference: 210.70 (A) (3)

Prepared/Revision Date:

8.4


ELECTRICAL CODE CLARIFICATION 2145 SUTTLE AVENUE, CHARLOTTE, NC 28208

(980) 314-CODE

SUBJECT:

CODE REFERENCE:

SUBMITTED BY:

EFFECTIVE DATE:

PROBLEM:

SOLUTION:

Remodel Jobs

Policy


Immediately – 01/06/10, revised 9/3/15

How much replacement wiring is required on a remodel job?

If the existing wiring met code at the time of installation, none is required. All new wiring shall meet current code. Changes in layout of walls or kitchen and bath cabinetry shall meet current code.

APPROVED BY: JOSEPH WEATHERS: ELECTRICAL CODE ADMINISTRATOR

13.7


Subject: Grounding Of Isolated Structural Steel



Problem: Bonding isolated structural steel

Solution: Structural steel that is isolated from main structural frame, such as, bar joists on masonry walls must be tied in or bonded in accordance with 250.104 (C).


Approved by:



Code Enforcement

Code Chapter Reference: 250.104 (C)


5.1




(704) 336-2831

SUBJECT: BUS DUCT CLEARANCES

CODE REFERENCE: 110.26 NEC 2005

SUBMITTED BY: Electrical Department (PLAN REVIEW)


PROBLEM: Are working clearances required on large busways (bus duct)?

DATE: 8-30-07

SOLUTION: No clearances are required if there are no spaces for plug-ins.

In sections that allow plug-ins proper clearances are required

for the plug-ins.


2.10



Code Enforcement

Subject: Butler Pantry Receptacles

Code Chapter Reference: 210.52 B, 210.52 C, 210.8, 210.12

Submitted by: Electrical Department



Problem: Receptacles at butler pantry

Solution: If the pantry is adjacent and open to the kitchen we need to have the receptacles on GFCI, meet countertop spacing requirements, be on the small appliance circuit(s), and AFCI is not required.

If the pantry is in other locations we need to have the receptacles on AFCI, meet countertop

spacing requirements, be on the small appliance circuit(s), and GFCI is not required unless a sink is installed.

THIS DOES NOT ADDRESS WET BARS!


Approved by:

Gary P Mullis Electrical Code Administrator

CODE INTERPRETATION Electrical

Solution: Two (2) ground rods shall be required on all permanent services (including pole services and entrance signs), detached buildings, remote pier, and pool panels that are required to have a driven ground. Saw Services and temporary construction trailers shall be permitted to have only one (1) ground rod.

CODE


Code Enforcement

Electrical INTERPRETATION

Subject: Clearances On Existing Residential Panels Code Chapter Reference: 110-26


Effective Date: Immediately Prepared/Revision Date: 9/3/15

Problem: New circuits being fed from existing panels not meeting clearance requirements.

Solution: Existing panel boards located behind or above items, such as washers, dryers, etc. that may be readily moved shall not be required to be relocated when one or 10% total amount of new circuits are installed.


Approved by: Gary Mullis Electrical Code Administrator


Subject: Clearances On Existing Residential Panel Change Outs.

Code Chapter Reference: 110-26





Approved by:



Code Enforcement

Problem: Insufficient clearance on existing panels.

Solution: Existing residential panels not meeting clearance require ments shall not be allowed to be changed out. It shall be permissible to use these existing panels as junction boxes to re-feed existing circuits when panel is relocated.

FEB/2006

1.14


Subject: 12 AWG Homeruns On A 15 AMP Circuit



Problem: 12 AWG homeruns reduced to 14 AWG circuits being put on a 20 amp breaker.

Solution: When 12 AWG homeruns are used on 14 AWG circuits, wires in panel must be permanently identified as 15 amp circuits.


Approved by:



Code Enforcement

Code Chapter Reference: Policy



2.6


Subject: Conductors In Commercial HVAC Units



Problem: Unprotected field wiring ran within HVAC equipment

Solution: Field installed conductors, rated for the environment, shall be permitted to run within HVAC equipment when routed in such a way as not to be subject to physical dam-age.


Approved by:



Code Enforcement




2.1


Subject: Cord And Plug Connected Dishwashers



Problem: Dishwashers being stolen

Solution: Dishwashers will be allowed to be cord and plug connected when meeting the requirements of 422.16 (B) (2) and the following: recep tacle must be switch operated or readily accessible


Approved by:



Code Enforcement

Code Chapter Reference: 422.16 (B) (2)


6.4


ELECTRICAL POLICY

SUBJECT: Covered Swimming Pool Bonding


EFFECTIVE DATE: Immediately – 05/01/15

PROBLEM: Swimming Pool deck grid and bonding is covered inadvertently without inspection.

SOLUTION: The Electrical Contractor will need to arrange, through Inspection by Appointment, to meet with the inspector for approval before testing of the bonding system by one of the approved firms. Inspectors will set the expectations of what is needed to assure safety by testing and their visual needs. Repeated use could result in contractors not being eligible for this policy. Testing will need to be performed to each required bonding element of NEC 680.26 and referenced to at least four exposed grid testing locations of the deck and or walls spaced equally apart as practical. Reports from the approved firms should be loaded to the electrical permit file by the contractor.

THIS IS NOT AN ALTERNATIVE FOR PROPER ROUGH INSPECTIONS AT THE APPROPRIATE TIME.

ONLY JOBS PROPERLY PERMITTED AND INSTALLED BY A LICENSED ELECTRICAL CONTRACTOR, WHO DOES NOT HAVE A “HIGH INSPECTION FAILURE RATE”, MAY BE ALLOWED THIS EXCEPTION.

Frequent use that shows a pattern of disregarding required inspections will result in a two year suspension from this program.

Currently firms approved for testing are:

QUALITY POWER SOLUTIONS - 704-545-1983 LEE TEETER AND ASSOCIATES - 704-376-2999 POWER PRODUCTS & SOLUTIONS, INC. - 704-573-0420 CROWN ENGINEERING PLLC - 704-564-4161

APPROVED BY: Gary Mullis, Electrical Code Administrator

Subject: Connecting Grounding Electrode Conductor In CT Cans And Troughs



Problem: Utility Co. not connecting Grounding Electrode Conductor to neutral in CT Cans and Troughs

Solution: Contractor must connect Grounding Electrode Conductor to neutral conductor in CT and trough before job can be finaled. (Utility Co. not responsible for system grounding of customer side of service)


Approved by:



Code Enforcement

Code Chapter Reference: 250.24 (A)



4.2


Subject: Morning Rooms




Approved by:



Code Enforcement



Problem: Determining if a morning room should be wired in 14 or 12 AWG

Solution: If the house has a dining room or breakfast area, morning rooms shall be permitted to be wired in 14 AWG.

13.4



CODE


Code Enforcement


Subject: Finished Versus Unfinished Areas Code Chapter Reference: Policy

Submitted By: Electrical Department Effective Date: Immediately

Prepared/Revision Date: 9/3/15

Problem: Wiring of unfinished attics and basements

Solution: When a room or area contains HVAC ducts or is within the

envelope of insulation it shall meet NEC requirements for habitable areas and similar room or areas


Approved by:

Gary Mullis Electrical Code Administrator


Subject: Definition Of Bedrooms.



Problem: Determining the criteria of bedrooms in relation to electrical requirements.

Solution: A room shall be considered a bedroom for the purpose of electrical require-ments when all of the following apply:

1.There is a door separating the room from other areas. 2.The room contains a closet or closets. 3.There is direct egress to the outside by a door or window. (Window must have a 22 x 20 opening at a maximum height of 44” from the floor.)

This is a general definition, lofts and studios shall be left to the discretion of the

AHJ.


Approved by:



Code Enforcement



13.6



Subject: Disposal



Problem: Cable to disposal subject to damage

Solution: Cable to disposal shall be routed with and secured to drain lines or sleeved in flex to prevent damage to cable.

If cable enters through bottom of cabinet, the cable must

be sleeved. DISPOSAL MUST BE MOUNTED ON THE SINK AT

THE TIME OF THE FINAL INSPECTION


Approved by:



Code Enforcement



6.2



Subject: Bonding Of Steel In Dwellings



Problem: Exposed steel not bonded in dwellings

Solution: Exposed steel in dwellings shall be bonded per 250.104 (C) unless wiring/cables are routed in such a way to ensure steel is kept isolated from contact.


Approved by:



Code Enforcement

Code Chapter Reference: 250.104 (C)



4.1


Subject: Screen Porch

Problem: Do I need additional lighting for a screen porch?

Solution: If the existing switch and lighting fixture provides sufficient illumination at the door entering the residence and to doorway entering the screen porch then additional lighting is not required. Any alterations or additions to the existing electrical system must be preformed by a North Carolina licensed electrician. A permit and inspection is rquired if the fixture is relocated, added, changed, or replaced.


Approved by:



Code Enforcement

Code Chapter Reference: 210.70



Prepared/Revision Date: 4-10-08

13.15



Subject: Equipotential Bonding Grid Requirements


Effective Date: 1/06/10

Problem: Improper connections on welded wire mesh bonding grid

Solution: Where separate sections of welded wire mesh intersect, connection shall be made by the use of one brass or copper split bolt or three steel tie wires made up tight. The #8 copper bond wire shall connect to the wire mesh by means of a brass or copper split bolt of the proper size.


Approved by:



Code Enforcement



4.3

Electrical CODE

INTERPRETATION CODE

INTERPRETATION



(704) 336-2831

SUBJECT: Single Non-GFCI Receptacles In Crawl Spaces




PROBLEM: Non-GFCI receptacles in crawl spaces.

SOLUTION: If the receptacle is existing and a like for like unit is being

changed out, the receptacle will be permitted to remain.


7.12


Subject: Existing Defects



Problem: Inspector requiring contractor to correct existing defects.

Solution: When defects are encountered that are not part of the con tractor’s scope of work, jobs should not be held up. Rather an RQ should be generated and brought to the homeowner’s at tention.


Approved by:



Code Enforcement



13.10




(704) 336-2831

SUBJECT: Existing Water Pipe Ground on Service Change



EFFECTIVE DATE: Immediately 1/18/08

PROBLEM: Water pipe ground not in first 5 feet of entrance to building

SOLUTION: Water pipe Grounding Electrode Conductors not connected

within first 5 feet of entrance to building will be acceptable

(when of sufficient size), only when service is being replaced

like for like and met code at the time of the original

installation.

Examples are:

1- Storm damage

2- Vandalism

3- Electrical or mechanical failure (burned buss, physical

damage, etc.)

Change of service to facilitate new construction, remodeling,

addition of circuits and the like will require water pipe

grounding electrode conductor to meet current code.


1.7


Subject: Existing Water Pipe Ground on Service Change



Effective Date: Immediately 1/18/08


Prepared by: Consistency

Approved by:



Code Enforcement

Problem: Water pipe ground not in first 5 feet of entrance to building

Solution: Water pipe Grounding Electrode Conductors not connected within first 5 feet of entrance to building will be acceptable (when of sufficient size), only when service is being replaced like for like and met code at the time of the original installation. Examples are: 1- Storm damage 2- Vandalism 3- Electrical or mechanical failure (burned buss, physical damage, etc.) Change of service to facilitate new construction, remodeling, addition of circuits and the like will require water pipe grounding electrode conductor to meet current code.

1.7


Subject: Resuming Jobs with Expired Permits



Problem: Single Family jobs with permits that have expired and reissued under new code cycle.

Solution: When jobs are re-permitted after the start of a new code cycle, the job must meet all parts of the code that the new permits are issued under. If a job has passed previous inspections, and to meet the intent of the new code would require removal of wall coverings, then it will be up to the discretion of the Field Inspector and his or her Supervisor as to what will be exempt.

The only exceptions are jobs that fall under SENATE BILL 831.

http://www.ncleg.net/Sessions/2009/Bills/Senate/HTML/S831v3.html


Approved by:



Code Enforcement



13.16


http://www.ncleg.net/Sessions/2009/Bills/Senate/HTML/S831v3.html�


Subject: Fire Alarm Mast Risers



Problem: EMT conduit used as risers

Solution: Fire Alarm mast risers must be a minimum of 1” rigid or IMC conduit.


Approved by:



Code Enforcement



12.1



CODE


Code Enforcement


Subject: Location of the Fire Pump Disconnecting Means at a Remote Power Source

Code Chapter Reference: 695.4 (B) (3) (4)



Problem: Need Clarification of “Sufficiently Remote” Solution: Sufficiently Remote: The disconnect/ocp means shall be located a minimum of

6’ away from all other building and fire pump source disconnecting means, such that inadvertent operation (at the same time) would be unlikely.

The above does not apply to the disconnecting means of a listed genset per NCDOI/OSFM. The disconnect means at the genset is considered to comply with 695.4 (A).


Approved by:



(980) 314-CODE

SUBJECT:

CODE REFERENCE:

SUBMITTED BY:

EFFECTIVE DATE:

PROBLEM:

SOLUTION:

Fire/Remodel Jobs

Policy


Immediately – 01/06/10

How much replacement wiring is required on a fire/remodel

job?

FIRE: If the existing wiring met code at the time of

installation, none is required. All damaged wiring systems will

be replaced to meet current code.

REMODEL: If the existing wiring met code at the time of

installation, none is required. All new wiring shall meet

current code. Changes in wall or kitchen and bath cabinetry lay out shall meet current code.


13.9


Subject: Grounding Electrode Conductors To Made Electrodes



Problem: Grounding Electrode Conductors Exposed To Physical Damage

Solution: A #4 solid copper conductor installed on the outside of a building, structure or pole does not require additional protection. The code states that a #6 copper conductor may be installed without protection if not subject to physi-cal damage. To establish consistency, a Grounding Elec-trode Conductor installed on the outside of a building, structure or pole is considered to be subject to physical damage. If a #6 copper conductor is installed, it shall be protected per 250.64(B).


Approved by:



Code Enforcement



5.4



Subject: Ground Joints On AC & MC Cable Installations



Problem: Ground joints not made on rough inspections

Solution: Ground joints shall be made and boxes shall be grounded at time of rough inspection.


Approved by:



Code Enforcement




3.4


Subject: Grounding On Meter Replacements



Problem: Insufficient grounding on meter replacement

Solution: When meter can is replaced two (2) ground rods will be required.


Approved by:



Code Enforcement



5.2



Subject: Ground Rods

Submitted By: Danny Simpson


Problem: Ground rods driven at a 45 degree angle

Solution: Code requires ground rods to be driven 8’ deep. When rock is encountered ground rods may be driven at a 45 degree angle, however proof shall be required.


Approved by:



Code Enforcement

Code Chapter Reference: 250-53 G


5.3



CODE


Code Enforcement


Subject: Range/Oven/Cooktop Circuits On Service Changes And Kitchen Remodels


Submitted By: Electrical Department Effective Date: Immediately 6/1/2007


Problem: 3-Wire circuits on cooking equipment in existing dwelling service changes and kitchen remodels.

Solution: On service changes it shall be permissible to re-feed 3-wire circuits

to ranges/ovens/cook tops when equipment remains unchanged. New wiring to the junction box shall be a 4-wire circuit. See NEC 250.140.




Subject: Changing Existing 240 Volt Panels At Electric Heat To 120 Volt Panels For Gas Furnaces.



Problem: Not able to run 110 volt furnace circuit from power panel (Main Breaker Panel).

Solution: Existing 240 volt panels shall be allowed to be changed to 120 volt panel in accessible attics and basements provided they meet clearance requirements of 110.26.


Approved by:



Code Enforcement




1.15


(980) 314-CODE

SUBJECT:

CODE REFERENCE:

SUBMITTED BY:

EFFECTIVE DATE:

PROBLEM:

SOLUTION:

AC Unit Over current Protection

440.22 and 110.3(B)


Immediately

AC unit Over current Protection being turned down for being too small

Over current Protection is only required to be larger than Minimum Circuit Ampacity and no larger than Maximum Over Current Protection.


11.1

ELECTRICAL CODE CLARIFICATION 700 N. TRYON STREET CHARLOTTE, NC 28202

(704) 336-2831

SUBJECT: Small Conductors

CODE REFERENCE: 240.4 (G)


EFFECTIVE DATE: 1-29-08, revised 9/2/15

PROBLEM: Can a #14 conductor be used at 16.6 MCA

SOLUTION: This problem arises primarily when we’re dealing with HVAC equipment. This solution will be talking about those installations. It must be noted that there are other areas of the code that allow this application.

Per Table 310.16 the allowable ampacity of a #14 conductor is 20 amps. The asterisk sends you to 240.4 (D). Article 240.4(D) states, unless specifically permitted in 240.4(E) or 240.4(G), the maximum overcurrent protection for a #14 conductor is 15 amp for general circuits. The code sections in table 240.4(G) are some of the specific instances where the overcurrent protection may exceed 15 amp. This in essence removes the asterisk from table 310.16 and leaves you with the allowable ampacity of #14 at 20 amp (no asterisk). 16.6 MCA is less than the allowable 20 amps so YES you may use #14 conductor at 16.6 MCA. This solution also assumes the proper insulation and/or raceway type are used.


Approved by:



CODE


Code Enforcement


Subject: Type IC Rated Recess Fixtures Code Chapter Reference: NEC 410.116


Prepared/Revision Date: 9/3/15 Problem: Are Type IC fixtures approved to be in contact with combustibles? Solution: Per their listing and the NEC 410.116, Type IC fixtures are allowed

to be in direct contact with combustibles.

Our policy is that if a Type IC/NON IC, qualified by trim and bulb (combination type fixture) is used, there will need to be 1/2” clearance from combustibles and 3” from insulation maintained as it is not practical to qualify these units on a final inspection.

If non IC or combination type fixtures are used in insulated spaces these fixtures shall be boxed out to assure no contact will occur with the insulation and comply with NC Residential Code N1102.4.5.


Approved by:



Subject: More Than Two Cables In A Box



Problem: Are we requiring joints to be made in boxes when more than two cables enter the box?

Solution: Yes. As always the equipment grounding conductors shall be pigtailed. If the box is for a switch or receptacle, then joints should be made so that no more than two hot or neutral conductors are left for connection to the device and in keeping with the manufacturer’s instructions. For all other junction boxes joints shall be completed.


Approved by:



Code Enforcement




3.3


(980) 314-CODE

SUBJECT:

CODE REFERENCE:

SUBMITTED BY:

EFFECTIVE DATE:

PROBLEM:

SOLUTION:

Remodel Jobs

Policy


Immediately – 01/06/10, revised 9/3/15

How much replacement wiring is required on a remodel job?



13.7

Electrical CODE

INTERPRETATION

Subject: Lay-in Fixtures



Problem: Insufficient support of lay-in fixtures

Solution: Lay-in fixtures shall be secured at all four corners either by support wires

or fastening to main runners. Support wires shall be sized per the manufacturer’s

instructions for hanging the ceiling grid (typically #9 wire). The trapeze

configurations below shall be acceptable for 2x4 (left) and 2x2 (right) luminaires.


Approved by:



Code Enforcement


Revision Date: January 11, 2012

8.5

Electrical CODE

INTERPRETATION


Subject: Light and Receptacle at Existing Furnace Change Outs



Problem: Are service lights and receptacles required for existing fur nace change outs?

SOLUTION: Service lights and receptacles are not required for replacement of like for like change outs ONLY. Gas pack to split system, new installations, new circuits to existing furnaces, etc., will require service lights and GFCI receptacles to be installed at the unit. The switch for the light is required at the access entrance of the attic or crawl space. The installation of the required light and GFCI shall be installed only by the electrical contractor


Approved by:



Code Enforcement



7.10



Subject: Grounding Fixture Bars



Problem: Grounding type fixture bars not being grounded

Solution: All listed and labeled fixtures with a grounding type fixture bar must have fixture bar grounded as well as all other necessary grounding connections.


Approved by:



Code Enforcement

Code Chapter Reference: 110.3 (B)


8.1



Subject: Residential Light Fixtures



Problem: Light fixtures not being installed in dwellings on final

Solution: In rooms where switched receptacles are not permitted in lieu of lighting outlets, fixtures will be required to be installed at time of final.


Approved by:



Code Enforcement



8.2



Subject: Fire Alarm/ Communication Cables Run Across Roofs



Problem: Fire Alarm cables running across the roofs of schools.

Solution: Where fire alarm cables and communication cables are run across rooftops they shall be ran a minimum of 8’ above rooftop or in stalled in rigid or IMC conduit.


Approved by:



Code Enforcement

Code Chapter Reference: 725.52, 800.44


12.2



Subject: Inspection of low voltage wiring (Fire alarm, data, telephone, etc)


Effective Date: Immediately– 06/01/07

Problem: What should a contractor expect to be inspected when a Fire Alarm, Data, Telephone, etc. system is permitted and inspected?

Solution: Requirements for low voltage wiring installations pertaining to NEC Articles 411,504,640,720,725,727,760,770,780,800,810,820,and 830

· Manufactures installation instructions must be on jobsite. · System must be installed per manufactures requirements. · System must be grounded per manufactures requirements and NEC requirements. · Use correct wiring method for location. · All equipment and cables are to be listed and labeled for their purpose. · Cables must be supported per NEC requirements. · Proper separation of low voltage conductors and power conductors must be main-

tained where applicable · Remove all abandoned cables above suspended ceilings where applicable. · All splices are to be made with listed connectors. · All cables are to be protected against physical damage. THIS LIST IS INTENDED AS A GENERAL GUIDELINE OF INSTALLATION AND INSPECTIONS.

Prepared by: Consistency

Approved by:



Code Enforcement

Code Chapter Reference: Art. 411,504,640,720,725,727,760,770,780,800,810,820,and 830


12.3



Subject: Meter damage or replacement only





Solution: Two (2) ground rods shall be required on all permanent services (including pole services and entrance signs), detached buildings, re-mote pier, and pool panels that are required to have a driven ground. Saw Services and temporary construction trailers shall be permitted to have only one (1) ground rod.

Prepared by: Consistency Team 7/1/2008

Approved by:



Code Enforcement

Problem: Would the service have to be upgraded or replaced when the meter can only is damaged?

Solution: When the meter can only is replaced due to storm damage or vandalism, replacing the meter can only is sufficient. However, the two driven ground rods are still a require ment. If an existing meter can is replaced that contained a tap to an outside A/C panel it will be permissible to allow the contractor to split bolt the conductors in the new met er can in order to prevent having two wires under one lug. (A 200 amp Meter can is suggested in order to make joints and maintain wire bending space.) The A/C disconnect fed from the meter was only allowed in the mid 70’s and no wiring could go back under the dwelling. All wiring had to be visible its entire length.

1.9


Subject: Modular and Mobile Homes



Problem: What should be looked at on modular and mobile homes?

Solution: The following shall be inspected.

1: NC validation on Modular or HUD on Mobile Homes 2: Service and Interior Panels 3: Field installed equipment such as: Well pumps, Septic pumps, HVAC equipment, Etc. 4: Crossover connections, metal framing bond where applica ble 5: Additions and Alterations


Approved by:



Code Enforcement



13.12


Electrical CODE

INTERPRETATION


Code Enforcement

Subject: Move on Single Family Residences


Submitted by: Electrical Department


Revision Date: 05/13/2016

Problem: What is required for a relocated Single Family Dwelling?

Solution: All of the following must be met:

All new work must meet current codes

Existing two wire, knob and tube or reduced ground circuits shall not be extended

For any remodel work being done, see Fire/Remodel Jobs 13.9

Smoke alarms and carbon monoxide detectors must be installed to meet current State

Code

Existing conditions that met NEC when they were installed may be left as is with the

exception of meeting current requirements for GFCI and AFCI protection

A meg test by a Code Enforcement approved firm will be required due to the

stress and pinch points inherent to this process


Approved by: Gary Mullis Electrical Code Administrator 13.11

CODE

INTERPRETATION Electrical

Electrical CODE

INTERPRETATION

Subject:

Code Chapter Reference:

Submitted By:

Effective Date:


Services on Multi-Family Buildings

230.2(B)(2)

GACC

Immediately

September 8, 2014

Problem: When is a multi-family building considered sufficiently large, and how

many services locations are allowed?

Solution: Multi-family buildings with 12 or more units shall be considered

sufficiently large per 230.2(B)(2) and allowed to have multiple services, provided

all of the following conditions are met:

1.The number of services (locations) allowed shall not exceed the total num-

ber of units plus one for the house panel, divided by six, rounded to the

next higher number.

Example for a fourteen unit building:

(14+1)/6 = 2.5) rounded up to 3 would allow 3 services

(locations).

Example for an eighteen unit building:

(18+1)/6 = 3.16 rounded up to 4 would allow 4 services

(locations).

2. The distance between services shall be a minimum of 50 feet.

3. Each service (location) shall have no more than six main disconnects.


Approved by:



Code Enforcement



(704) 336-2831

SUBJECT: Non-Metallic Flex Connectors




PROBLEM: PVC connectors being used on non-metallic flex

SOLUTION: PVC connectors are not listed for use with non-metallic flexible

raceways. Only connectors listed for non metallic flex will be

accepted.

For Clarity: A sleeve is not considered a raceway.


2.7


Subject: Panel/Sub-Panel Location



Problem: Panels in attics and basements

Solution: Panel/Sub-Panels with branch circuit over current protect tion will only be allowed in attics with permanent stairs. Panels in basements/crawlspaces shall have a full size door at entrance and 6 ½’ high headroom and 24” wide throughout egress/ingress. At these locations all clearances in 110.26 shall apply.


Approved by:



Code Enforcement

Code Chapter Reference: 110.26 and Policy



1.16

2145 SUTTLE AVENUE, CHARLOTTE, NC 28208

SUBJECT:

CODE REFERENCE:

SUBMITTED BY:

EFFECTIVE DATE:

PROBLEM:

SOLUTION:

Patient Care Space or Vicinity

Policy


Immediately


980-314-CODE

APPROVED BY: Gary Mullis: ELECTRICAL CODE ADMINISTRATOR

How to determine patient care Space or Vicinity?

If a project is for work done in any health care facility and /or appears to have a Patient Care Space or Vicinity

Patient Care Space is defined as a space within a health care facility wherein patients are intended to be examined or treated.Basic Care Space. Space in which failure of equipment or a system is not likely to cause injury to the patients or caregivers but may cause patient discomfort. General Care Space. Space in which failure of equipment or a system is likely to cause minor injury to patients orcaregivers.Critical Care Space. Space in which failure of equipment or a system is likely to cause major injury or death topatients or caregivers.Support Space. Space in which failure of equipment or a system is not likely to have a physical impact on patients or caregivers.

Patient Care Vicinity. A space, within a location intended for the examination and treatment of patients, extending 1.8 m (6 ft) beyond the normal location of the patient bed, chair, table, treadmill, or other device that supports the patient during examination and treatment and extending vertically to 2.3 m (7 ft 6 in.) above the floor. [99:3.3.139]FPN: Business offices, corridors, lounges, day rooms, dining rooms, or similar areas typically are not classified as patient Space or Vicinity areas.

In order for a Health Care Facility to be exempt from the Patient Care Space or Vicinity requirements, the owner or governing body of the facility needs to submit a letter that the facility at the said location will not examine or treat patients as defined by the NEC.



(704) 336-2831

SUBJECT: Peninsular And Island Receptacle Location




PROBLEM: Unable to install receptacle due to overhang being more than

6”

SOLUTION: When necessary, receptacle shall be permitted below overhang

of more than 6” when receptacle is placed within 12” of the

countertop edge measured along the path a cord would travel.


7.4



(704) 336-2831

SUBJECT: Peninsular And Island Receptacle Requirements




PROBLEM: Receptacle spacing on peninsular and island countertops on

half wall installations.

SOLUTION: Cabinets on walls as described above are wall countertop

spaces and therefore shall meet the 2’, 4’ spacing requirement.


7.3


Subject: General Use Receptacle Spacing



Problem: Receptacles not being installed per code

Solution: Receptacle spacing measurements shall begin at door frame regard-less of door swing.


Approved by:



Code Enforcement

Code Chapter Reference: 210.52 (A)


7.1



Subject: HVAC Service Receptacles On Rooftops of Multi-Occupancy Buildings



Problem: Service receptacles having no power because tenant has moved out.

Solution: Rooftop HVAC service receptacle shall be fed from house panel or each unit servicing a tenant space must have a receptacle within 25’ that is fed from respective tenant space.


Approved by:



Code Enforcement



7.14



Subject: Christmas Light Receptacles In Bathrooms



Problem: Christmas Light Receptacles being installed on 15 amp cir-cuits in bathroom.

Solution: Christmas lights shall be allowed to be installed on separate 15 amp Christmas light circuits. These outlets must be switched and GFCI protected.


Approved by:



Code Enforcement



7.7




(704) 336-2831

SUBJECT: Receptacles In Existing Bathroom Remodels

CODE REFERENCE: 210.11 (C) (3)



PROBLEM: Requiring dedicated 20 amp circuit in existing bathrooms

SOLUTION: Receptacles in existing bathroom remodels, where not

reasonably accessible, will be allowed to remain on existing

circuit and GFCI protection will be required.


7.8

ELECTRICAL CODE CLARIFICATION 700 N. TRYON STREET CHARLOTTE, NC 28202

(704) 336-2831

SUBJECT: Remodel Jobs



EFFECTIVE DATE: Immediately – 01/06/10, revised 9/3/15

PROBLEM: How much replacement wiring is required on a remodel job?

SOLUTION:



Approved by: Gary Mullis Electrical Code Administrator Gary Mullis Electrical Code Administrator


Subject: SE Cables On Service Changes





Problem:

Solution:

SE cables feeding existing interior panels on service changes

On service changes, reconnecting existing SE cables to aninterior panel shall be acceptable when proper over-currentprotection is installed and replacement of cable is notphysically practical without damaging the finish or structure.

(This is/was allowed for services that ran into homes without fused conductors.)


Approved by:



Code Enforcement

Subject: SE Cables On Service Changes


1.3


Subject: Sealing Hubs On Services





Problem: When meter cans/switches are set above service trough, are weatherproof hubs required on the trough? Note: All conductors in the trough are approved for a wet location.

Solution: Conductor type does not determine wiring methods. You must use fittings listed for the application and installed per the manufacturer’s specifications. (If it is installed outdoors, it is a wet location.)


Approved by:



Code Enforcement

1.5


Subject: Services On Multi-Occupancy Buildings





Problem: Location of main breakers in tenant spaces

Solution: Main disconnects located in tenant spaces of multi- occupant buildings will be allowed when conduits run

under the slab of buildings and terminate as near as possi ble from emergence from slab. In this instance, all mains must be located in their respective tenant spaces with the exception of house panels and fire pumps.


Approved by:



Code Enforcement

1.4



(704) 336-2831

SUBJECT: Signs




PROBLEM: When is a separate permit for a sign required?

SOLUTION: When an electrical contractor is wiring a project and a sign is

being wired in the field by anyone other than that electrical

contractor a permit will be required by those actually wiring

the sign.


10.1


Subject: Smoke Detector Location Regarding HVAC Vents



Problem: Smoke Detectors too close to HVAC vents

Solution: Smoke detectors must be kept at least 3’ from HVAC supply and return vents unless manufactures’ instructions are left on job site and allow detectors to be closer the 3’ to return ducts.


Approved by:



Code Enforcement

Code Chapter Reference: Manufacturers installation instructions


9.2



Subject: Smoke Detector Location Regarding Fan Boxes



Problem: Smoke detector installed too close to ceiling fan box.

Solution: If a three (3) wire cable is ran to a light box or a fan box is installed, smoke detector shall be installed at least 5’ from box.


Approved by:



Code Enforcement

Code Chapter Reference: Manufacturers installation instructions


9.1


ELECTRICAL CODE CLARIFICATION 700 N. TRYON STREET CHARLOTTE, NC 28202 (704) 336-2831

SUBJECT: Smoke Detectors in Existing Dwellings CODE

REFERENCE: NC R313, 314.3.1 and 314.4


EFFECTIVE DATE: Immediately, Revised 9/2/2015

PROBLEM: Determining when smoke detectors are required in existing dwellings.

SOLUTION: As of January 1, 2008 any addition, alteration, repair to any dwelling unit or when one or more sleeping rooms are added to an existing dwelling unit the dwelling shall be equipped with smoke alarms located as required for new dwellings. This includes but is not limited to kitchen and bath remodels finishing a basement adding a room or garage addition

SMOKE ALARM REQUIREMENTS

• A smoke alarm shall be installed in the following locations. • In each sleeping room. • Outside each separate sleeping area in the immediate vicinity of the bedrooms. • On each additional story of the dwelling, including basements. In dwellings or dwelling units with

split levels and without an intervening door between the adjacent levels, a smoke alarm installed on the upper level shall suffice for the adjacent lower level provided that the lower level is less than one full story below the upper level.

• All smoke alarms shall be hard wired and interconnected. • An electrical permit is required for installation of smoke alarms.

EXCEPTIONS

• Interconnection and hard-wiring of smoke alarms in existing areas shall not be required where the

alterations or repairs do not result in the removal of interior wall or ceiling finishes exposing the structure unless there is an accessible crawl or attic space.

• Work involving exterior surfaces of dwellings such as the replacement of roofing or siding, or the addition or replacement of windows or doors, or the addition of a deck or porch is exempt from the requirements of this section.

ELECTRICAL CODE CLARIFICATION 700 N. TRYON STREET CHARLOTTE, NC 28202 (704) 336-2831

For any additional questions that you might have please contact RTAC at (704)-432- 7822 Prepared by: Consistency Team

Approved by:



CODE


Code Enforcement


Subject: Sprinklers in Electrical Rooms

Code Chapter Reference: 110-26 (E) (1) (C)



Prepared/Revision Date: 7/27/01 – Revised 9/02/15

Problem: Sprinkler Heads in the Electrical Equipment Rooms Solution: In the past we have tried to be pro-active in preventing sprinkler protection from flooding the electrical equipment due to activation from sources other than the equipment. For indoor installations, the dedicated space shall comply with the following: Sprinkler protection shall be permitted for the electrical equipment where the installation does not enter the dedicated space.

Dedicated Electrical Space The space equal to the width and depth of the equipment and extending from the floor to a height of 6 ft. (1.83 m) above the equipment or to the structural ceiling, whichever is lower, shall be dedicated to the electrical installation. No piping, ducts, or equipment foreign to the electrical installation shall be located in this zone.

Foreign Systems The space equal to the width and depth of the equipment shall be kept clear of foreign systems unless protection is provided to avoid damage from condensation, leaks, or breaks in such foreign systems. This zone shall extend from the top of the electrical equipment to the structural ceiling.

Suspended Ceilings A dropped, suspended, or similar ceiling that does not add strength to the building structure shall not be considered a structural ceiling.

Prepared by: Consistency Team Approved by: Gary Mullis Electrical Code Administrator

October 6, 2015


CODE


Code Enforcement


Subject: Height And Switching Of Stairwell Lights

Code Chapter Reference: IBC 1009.2 and NCRC R311.7, NCRC 303.6 Submitted By: Electrical Department


Prepared/Revision Date: 09/03/2015 Problem: Building inspectors turning down jobs because of light/

switch Solution: Per IBC 1009.2 and NCRC R311.7 stairways are required to have a

minimum headroom height of 6’ 8” (80”) measured vertically from the sloped plane adjoining the tread nosing or from the floor surface or platform. This measurement is required across the entire width of the stairway or landing and will not allow any lighting fixtures to be in this space that protrude from the walls.

Per NCRC 303.6 there shall be a wall switch at each floor level to control the lighting outlet where the stairway has six or more risers. The illumination of exterior stairways shall be controlled from inside the unit.


Approved by:




(704) 336-2831

SUBJECT: Sunrooms




PROBLEM: Wiring installed in sunroom building panels without

inspection.

SOLUTION: No wiring will be allowed to be installed in building panels of a

sunroom or similar structure unless cables are visible at time

of inspection such as in channels or tracks with removable

covers.


13.3



(704) 336-2831

SUBJECT: Switch and Receptacle plates




PROBLEM: Job being turned down for missing switch and receptacle

plates.

SOLUTION: If plates have been removed for painting or wallpaper, job

should not be turned down. Switch and receptacle plates

should be installed on devices in non conditioned areas.


7.13


Subject: Burial Depth On Temporary Construction Trailers



Problem: Shallow burial depth on temporary construction trailers.

Solution: The depth of conduit on a temporary construction trailer will be left up to the inspector’s discretion depending on the

conditions of the site, (Driveways, areas of storage, proximity to construction and possibilities of physical damage).

When conduit is allowed to be ran on top of ground, such as under trailers and other areas not subject to damage, it shall be staked down to prevent movement. Direct burial cable shall meet NEC requirements.

Prepared by: Consistency Team FEB/2006

Approved by:



Code Enforcement



13.13



Subject: Water Pipe Grounds On Temporary Power


Effective Date: Immediately 2/29/ 08

Problem: Water not in system on Temporary Power

Solution: To ensure safety of electrical system and those installing plumbing supply systems, it is necessary to have plumbing on water distribution system complete before Temporary Power can be released.


Approved by:



Code Enforcement



5.5



Subject: Temporary Power



Problem:

Solution:

GFCI for temporary power

NCEC requires in 10.8 that at least one GFCI protected receptacle outlet be installed for temporary power on the building.


Approved by:

Electrical Code Administrator


Code Enforcement



13.2


Gary Mullis

SUBJECT:

CODE REFERENCE:

EFFECTIVE DATE:

PROBLEM:

SOLUTION:

ELECTRICAL POLICY 2145 Suttle Avenue, CHARLOTTE, NC 28208

(980 314-3098)

Underground Installation Requirements

Policy and NEC 300.5

Immediately – 05/01/15

Covered work and inspection requirements

Clarification below

SLAB and DITCHING INSPECTIONS When a project requires slab or underground electrical systems they shall be inspected before being covered.

DIRECTIONAL BORING INSPECTION REQUIREMENTS When a project requires directional boring to be performed, special arrangements must be made with the Code Enforcement Department.

If the boring is 60’continuous or less, we will need both ends of the bore left open for the inspector’s visual inspection of the depth and conduit type.

If the bore is over 60 ‘, the inspector must witness all or a great portion of the installation in order to verify how the conduit is being installed. If the inspector doesn’t witness the conduit being installed, then the conduit can only be considered a sleeve and can’t be used as a raceway per NEC 300.5(K). Installation of a “sleeve only” is not required to be witnessed. In either case, the depth of the conduit must be verified by a third party if the entire length of buried conduit has not been inspected. There are only two companies, listed below, that have been certified by the Department to perform a “sub-surface depth test” to verify the NEC required burial depth. The inspector must witness the depth test. An Inspection by Appointment (IBA) is the only way to ensure that the inspector will be at the jobsite exactly when the customer expects them to be there.

American Leak Detection 704-365-8600

Quality Power Solutions 704-545-1983

SHAFT BORE AND PNEUMATIC PUNCH INSTALLATIONS

Shaft bore and pneumatic punch installations will not require inspector to witness installation. Installations require both ends of the bore/punch remain open for the inspector’s visual inspection of the depth and conduit type. If the run is 60’ or less, no depth test will be required. If greater than 60’, a depth test is required as outlined above.

APPROVED BY: Gary Mullis, Electrical Code Administrator



(704) 336-2831

SUBJECT: Unfused Service Conductors

CODE REFERENCE: 230.70 (A) 1 & 230.91



PROBLEM: The length of unfused conductors permitted to run inside a

service trough inside a commercial / industrial building.

SOLUTION: For all commercial / industrial projects the length of unfused

conductors permitted to be run inside to a service trough shall

not exceed 16 feet from the point of entry into the building to

the point of termination to its overcurrent protection, where

located in an electrical equipment room.


1.8



(704) 336-2831

SUBJECT: Using Ty-wraps In Outdoor Location

CODE REFERENCE: 110.3 (B)



PROBLEM: Ty-wraps deteriorating due to UV exposure

SOLUTION: Solid wire, black ty-wraps or ty-wraps rated for direct sunlight

shall be permitted to secure HVAC flex to lineset in outdoor

locations.

(Neither electrical tape nor duct tape are acceptable means of

securing raceways).


2.5

MECKLENBURG COUNTYLand Use and Environmental Service Agency

Code Enforcement August 28, 2008 Revised: 7-18-13

Water Damaged Electrical Requirements This policy provides information on how to evaluate electrical equipment that has been exposed to water through flooding, fire fighting activities, hurricanes, busted water lines, etc. Electrical wiring and equipment exposed to water can be extremely dangerous if reenergized without replacement or reconditioning. Initially it may not be apparent but the integrity of the electrical system and its components have been severely impaired, jeopardizing the safe electrical wiring system due to contaminations and sediment lodged in the equipment along with the corrosive action that will develop.

These requirements apply to any electrical wiring and equipment which has been submerged in flood water for any length of time and/or sustained any other water or storm damage. Please contact a licensed electrical contractor to assist you with the following:

1. An electrical permit is required for all repairs and replacements of electrical wiring and equipment.

2. Before an electrical service panel may be re-energized it must be cleaned and dried throughout, by aqualified individual, and all circuit breakers and/or other damaged components replaced.

3. The busbars must show no evidence of corrosion or oxidation and the connected load must be in anelectrically safe condition.

4. The following electrical wiring and equipment must be replaced if they have been submerged in water for anylength of time:

Any cable or wire not listed for wet locations which has been submerged at either end thus allowing water to enter its body, electronically controlled and solid state contactors and starters, components containing semi-conductors and transistors, overload relays, adjustable speed drives, molded case circuit breakers, switches and receptacle outlet devices, fuses, (Manual and magnetic motor controllers and motor controlled centers may be reconditioned by trained personnel).

Exception: The cable or wire may not need to be replaced if a report is submitted to the Electrical Code Administrator of Mecklenburg County with the results of a high voltage test of the wiring (such as a megohmeter test) which indicates that the insulation has not failed. This test must be performed by a Mecklenburg County approved Meg Test Engineer.

For questions you may contact the Residential Technical Answer Center (RTAC), of Mecklenburg County at (704) 432-7822.

Gary MullisElectrical Code Administrator980 314 3098

http://www.meckpermit.com/�


Subject: Water Heater Disconnect



Problem: Inspectors requiring breaker lockout when service is changed.

Solution: Disconnects/lockouts shall not be required when panel/ services are changed and no new wiring is run to the wa ter heater.


Approved by:



Code Enforcement

Code Chapter Reference: 422.31


6.3



Subject: Water Heater or Furnace Change Out


Effective Date: Immediately, February 22, 2008

Problem: How do we accomplish grounding of furnaces and / or water heaters on two wire circuits?

Solution: 250.134 Equipment Fastened in Place or Connected by Permanent Wiring Methods (Fixed) — Grounding.

Unless grounded by connection to the grounded circuit conductor as permitted by 250.32, 250.140, and 250.142, non–current-carrying metal parts of equipment, raceways, and other enclosures, if grounded, shall be connected to an equipment grounding conductor by one of the following meth-ods. 250-134 (A) or (B).(A) Equipment Grounding Conductor Types. By connecting to any of the equipment groundingconductors permitted by 250.118.(B) With Circuit Conductors. By connecting to an equipment grounding conductor containedwithin the same raceway, cable, or otherwise run with the circuit conductors.Exception No. 1: As provided in 250.130(C), the equipment grounding conductor shall bepermitted to be runseparately from the circuit conductors.Exception No. 2: For dc circuits, the equipment grounding conductor shall be permitted to be runseparately from the circuit conductors.

(C) Nongrounding Receptacle Replacement or Branch Circuit Extensions. The equipmentgrounding conductor of a grounding-type receptacle or a branch-circuit extension shall bepermitted to be connected to any of the following:

(1) Any accessible point on the grounding electrode system as described in 250.50(2) Any accessible point on the grounding electrode conductor


Code Enforcement

Code Chapter Reference: 250.134; 250.134 (B); 250 134 (B) Exception 1



A circuit size conductor from the furnace may be split bolted to the grounding electrode conduc-tor, or properly connected to the water pipe immediately adjacent to the grounding electrode con-ductor connection, or ran within the first 5 feet of where the metallic pipe enters the structure.



5.7

(3) The equipment grounding terminal bar within the enclosure where the branch circuit for the receptacle orbranch circuit originates(4) An equipment grounding conductor that is part of anotherbranch circuit that originates from the enclosure where the branch circuit for the receptacle or branchcircuit originates(5) For grounded systems, the grounded service conductorwithin the service equipment enclosure(6) For ungrounded systems, the grounding terminal bar within the service equipment enclosure



(704) 336-2831

SUBJECT: Zoning Restriction on Detached Signs

CODE REFERENCE: Appendix A Zoning Section 13.104. (2)



PROBLEM: Overhead Drops

SOLUTION: Zoning Restrictions do not allow overhead drops to detached signs.

All signs MUST be fed from underground. A pole service may be

set near sign for overhead service and then bring feed into sign

from underground.

Section 13.104. General provisions. (2) Electrical standards. All illuminated signs shall be installed

in accordance with the applicable provisions of the North Carolina State Electrical Code and all detached signs shall be so illuminated by an underground electrical source.


10.2

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