The following modifications and amendments to the 2017 National Electrical Code (NEC) are hereby adopted:
(A) NEC Modification. Whenever the National Electrical Code refers to the "code official" it shall mean the person appointed or designated by the municipal governing body to administer and enforce the provisions of the Residential Code.
(B) (1) Amend Article 90 "Introduction" by adding Section 90.10 "Appeals" so that when amended it reads as follows:
90.10 Appeals. The Town of Collierville, Construction Board of Adjustments and Appeals shall be the appeals body which is authorized to hear and decide appeals of orders, decisions, or determinations made by the code official regarding the application and interpretation of this code.
(2) Amend Article 110, Section 110.5 "Conductors" by adding section 110.5(a) so when amended it reads as follows:
110.5(a) Dwelling Conductors. Inside one- or two-family or multi-family dwellings, aluminum conductors shall not be permitted.
(3) Amend Article 210, Section 210.52(B)(3) "Kitchen Receptacle Requirements" so when amended it reads as follows:
210.52(B)(3) Kitchen Receptacle Requirements. Receptacles installed in a kitchen to serve countertop surfaces shall be supplied by two or more 20 AMP small-appliance branch circuits, and each such circuit shall supply not more than three receptacle outlets. These small-appliance circuits shall be installed in every kitchen in new buildings, where kitchens are completely remodeled, or where kitchens are added to existing buildings and shall serve not more than one kitchen. A vent-a-hood or gas cook top ignition receptacle may be added as a fourth outlet on a small appliance branch circuit.
(4) Amend Article 210, Section 210.52(C)(2) "Island Countertop Spaces" by adding the following exception:
Exception: The installation of receptacles for island countertop spaces shall be optional.
(5) Amend Article 210, Section 210.52(C)(3) "Peninsular Countertop Spaces" by adding the following exception:
Exception: The installation of receptacles for peninsular countertop spaces shall be optional.
(6) Amend Article 220, Section 220.1 "Scope" by adding a new section 220.1(a) so that when amended it reads as follows:
220.1(a). Any person, firm, corporation or contractor, designing or installing new electrical systems or adding load to an existing electrical system shall be responsible for determining that the main service equipment, feeders and all equipment be of the proper size for the total connected load as required by the 2017 National Electrical Code as amended by the Town of Collierville.
(7) Delete Article 220, Section 220.10 "General" in its entirety and replace with the following:
220.10 General. Branch-circuit loads shall be calculated as shown in 220.12, 220.14, and 220.16. Branch circuit load calculations shall be provided as part of or prior to the "Rough Electric" inspection.
Exception: In one- and two-family dwellings the branch-circuit load calculations are not required if wired according to the following:
1) No more than 16 convenience outlets, single or duplex, shall be connected on any circuit and no single circuit shall supply an area of more than 750 sq. ft. Receptacle circuits shall be wired with a 12-gauge wire and protected by a 20-ampere over-current device. Not more than 12 outlets connected to any circuit where lighting and receptacle outlets are combined on one 20-ampere arc-fault protected over-current device.
2) At least one lighting circuit shall be installed for each 750 sq. ft. of floor area or fraction of this area. Not more than 12 lighting outlets shall be connected to any one lighting circuit. Lighting circuits may be wired with 14-gauge wire and protected by 15-ampere over-current devices.
(8) Amend Article 220, Section 220.14(1) "Receptacle Outlets" by adding a new section 220.14(I)(1) so that when amended it reads as follows:
220.14(I)(1). In other than one- and two-family dwellings, not more than six convenience outlets or floor box receptacles, single or duplex, shall be connected to one 120-volt circuit in installations unless designed by a Tennessee licensed Electrical Engineer.
(9) Delete Article 230, Section 230.70(A)(1) "Readily Accessible Location" in its entirety and replace with the following:
230.70(A)(1) Readily Accessible Location. The service disconnecting means shall be installed at a readily accessible location either outside of a building or structure or inside nearest the point of entrance of the service conductors. Service conductors shall not extend more than 15 feet of total conductor length inside a building or structure, measured from the point of entrance, prior to over-current protection.
(10) Amend Article 250.50(A)(3), "Concrete Encased Electrode" by adding the following sentence at the end of the section:
The installation of the electrode shall be verified by a Town of Collierville electrical inspection or by an engineer prior to placement of concrete.
(11) Amend Article 300.5(D) "Protection from Damage" by adding requirement number 5 so when amended it reads as follows:
300.5(D) Protection from Damage. Direct-buried conductors and cables shall be protected from damage in accordance with 300.5(D)(1) through (D)(5).
(5) Separation from gas piping. Direct-buried conductors, raceways, conduits, etc., shall be separated from gas pipe by a minimum of 12 inches when installed in the same ditch, trench, slab, etc...
(12) Amend Article 310.15(B)(7) "Single-Phase Dwelling Service and Feeders" by adding section 301.15(B)(7)(5) so when amended it reads as follows:
310.15(B)(7) Single-Phase Dwelling Service and Feeders. For one- and two-family dwellings and the individual dwelling units of two-family and multi-family dwellings, service and feeder conductors supplied by a single-phase, 120/240-volt system shall be permitted to be sized in accordance with 310.15(B)(7)(1) through (5).
(5) The service conductor ampere rating shall not be less than the MAIN overcurrent protective device rating or the bar rating of a MAIN LUG ONLY panel.
(13) Amend Article 334. Section 334.12(A) "Type NM, NMC and NMS" by adding a new section 334.12(A)(11) so that when amended it reads as follows:
334.12(A)(11) In non-residential occupancies.
(14) Amend Article 340, Section 340.12 "Uses Not Permitted" by adding a new section 340.12(12) so that when amended it reads as follows:
340.12(12) In non-residential occupancies.
(15) Amend Article 422, Section 422.16(B)(2) "Built-in Dishwashers and Trash Compactors" by adding an exception to condition 2 so that when amended it reads as follows:
Exception: An approved minimum 14 gauge factory molded flexible cord with factory installed cord cap and identified as suitable for the purpose may be used. The length of the cord shall be a maximum of 6 feet measured from the face of the attachment plug to the electrical termination point of the built-in appliance.
(16) Amend Article 210, Section 210.12(A) “Dwelling Units” so when amended it reads as follows:
210.12(A) Dwelling Units. All 120-volt, single-phase, 15- and 20-ampere branch circuits supplying outlets or devices installed in dwelling unit kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreational rooms, closets, hallways or similar rooms or areas shall be protected by any of the means described in 210.12(A)(1) through (6). The arc-fault circuit interrupters (AFCI) protection requirements shall be optional for bathrooms, laundry areas, garages, unfinished basements and for individual branch circuits supplying refrigeration equipment.
(Ord. 2020-06, passed 9-14-20; Am. Ord. 2022-13, passed 10-10-22)