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this is what code says:2 k% L4 G7 d3 U: ~
4-028: Identification of insulated neutral conductors up to and including No. 2 AWG3 c% R$ M& b N! v- V
copper or aluminum
3 ]; D( ~# |, s( c& _8 |(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including4 Q4 b2 W# u- `4 h& j* t+ e1 L6 N/ B1 s
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to. x5 o: P3 Q2 Q1 o, d9 {/ L
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
0 _$ ^( ^ ?8 ~along the entire length of the conductor.: v/ `! O3 C& E7 o* g
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
9 u7 X1 b* Q/ q3 tand the identified circuit conductor of one system is coloured by a white or grey covering, each identified; ~; _9 w; ~/ f+ s8 A
circuit conductor of the other system, if present, shall be provided with a specific identification, and the6 V8 Z. @' D1 |, G+ V: A7 O5 ~
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not5 v& V y3 C! i# H) w! t
green) running along the insulation.1 R& j4 e3 u& B
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of% `. D& D M* m2 |9 _, l. t, M" m
an identified conductor; however, in the case of those flexible cords where the identified conductor is; `3 [4 [5 R1 |) V$ P. P
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.6 ?' u1 V8 y9 W( r$ ~2 l) r
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked5 h! _7 m: ]( g
as the identified conductor by painting or other suitable means at every point where the separate
# Y$ \' S) _ C) sconductors have been rendered accessible and visible by removal of the outer covering of the cable, and' Q& w8 X0 h8 J- k! ?6 T. f$ R5 l
the painting or other suitable means of marking the identified conductor shall not be permitted to render$ l# g; A6 M; [% w8 U
illegible the manufacturer’s numbering of the conductor. |
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