The provisions of Article 215 of NFPA 70 are adopted by reference with the following modifications:
1. Revise subsection 215.2(A)(1)(b) to read:
(b) The minimum feeder conductor size shall have an allowable ampacity not less than the maximum load to be served after the application of any adjustment or correction factors.
Informational Note No. 1: See Examples D1 through D11 in Informative Annex D.
Informational Note No. 2: See 210.19(A) for voltage drop requirements for branch circuits.
Conductors for feeders, as defined in Article 100, shall be sized to prevent a voltage drop not to exceed 3 percent at the farthest outlet of power, heating, and lighting loads, or combinations of such loads, and so that the maximum total voltage drop on both feeders and branch circuits to the farthest outlet does not exceed 5 percent."
2. Revise section 215.5 to read:
"Diagrams of Feeders. A diagram showing feeder details shall be provided to the authority having jurisdiction prior to the installation of the feeders in accordance with 215.5(A) and (B).
(A) Plans Required. For new or altered electrical systems, complete and detailed electrical plans are required prior to permit issuance for the following installations:
(1) Residential (Group R) occupancies in buildings greater than two stories in height
(2) Non-residential occupancies in buildings greater than one story in height or greater than 929 m
2
(10,000 ft
2
) in area
(3) Hazardous (classified) locations
(4) Health care facilities
(5) New or replacement services or feeders rated 400 amperes or greater
(6) New or replacement services or feeders exceeding 240 volts, nominal, to ground
(7) Service switchboards and motor control centers rated in excess of 1200 amperes or 600 volts
(8) Permanent generators
(9) New emergency lighting systems and repairs or alterations to required System I or System II emergency lighting systems
(10) Installation of electric vehicle supply equipment serving more than 3 parking spaces
(B) Plan Content. The plans shall include where applicable, the following:
(1) A single-line drawing of the service and distribution
(2) Schedule of conduits, wire, switches, circuit breakers, overcurrent devices, transformers, motors and luminaires
(3) Load calculations to verify sizes of services, feeders, and panelboards indicating available fault- current and withstand ratings
(4) Grounding electrode conductor or common grounding electrode conductor system
(5) Equipment layout in switchboard rooms and electrical closets indicating the working space required by 110.26"
3. Revise subsection 215.12(C)(1) to read:
"(1) Feeder Ungrounded Conductors. Feeder ungrounded conductors:
(a) Rated 150 volts to ground or less shall use the following color code: black, red, and blue.
(b) Rated over 150 volts to ground shall use the following color code: brown, orange, and yellow.
(c) On a 4-wire, delta-connected system where the midpoint of one phase winding is grounded, the high phase feeder conductor shall be durably and permanently marked by an outer finish that is orange in color."
(Amend Coun. J. 11-8-17, p. 59720, § 12; Amend Coun. J. 12-14-22, p. 58278, Art. IV, § 1)