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this is what code says:
% x& M4 q3 B3 g4-028: Identification of insulated neutral conductors up to and including No. 2 AWG2 g, o8 d+ \9 Y/ L3 l4 k
copper or aluminum( X0 a, B( d6 V6 O
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
' Y1 s8 t" q; h+ m2 D6 o' TNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to* {4 p' |, p* w/ C: Q/ H
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
; Z. J( ]) }4 ?. G3 ualong the entire length of the conductor.
; k! Q. u0 B7 g* j(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
% a) x% ]! ?4 mand the identified circuit conductor of one system is coloured by a white or grey covering, each identified2 d9 I2 v. Q$ I% i; s$ u
circuit conductor of the other system, if present, shall be provided with a specific identification, and the
6 r. C5 |+ P" _4 [" |4 i4 lidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not- j, q# i# f" H3 \$ o/ q$ s
green) running along the insulation.6 o$ V! W, w2 H/ U# K
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of0 v D4 ~, H' L: @! h
an identified conductor; however, in the case of those flexible cords where the identified conductor is
6 E$ z* V+ o; B8 lidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
# J* \' [; U) k& o% P(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked/ R- [! e( E6 w. p# W
as the identified conductor by painting or other suitable means at every point where the separate1 I3 {: W; t4 b6 ?
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and& e6 l& q8 U! N# x* d& _
the painting or other suitable means of marking the identified conductor shall not be permitted to render n, q; g1 J }( p- f5 W" D
illegible the manufacturer’s numbering of the conductor. |
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