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this is what code says:
9 s4 `. D8 d. l+ u9 K( e4-028: Identification of insulated neutral conductors up to and including No. 2 AWG: h; x0 l' ~8 H& i
copper or aluminum* i7 V* S7 O) J; d+ }8 h7 B
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
6 s% L! \8 y+ X: D- CNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to- D5 R1 A$ p4 i* _9 |$ q1 V/ }/ u
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
" a) E2 P" t$ f( r& ialong the entire length of the conductor.
$ q# Q( q* [: q5 k(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure6 f9 u7 {* w, t: O: n! K! K+ e# Z
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
J3 J! p! V3 L! ], \ T$ J( J1 Mcircuit conductor of the other system, if present, shall be provided with a specific identification, and the; h! G" a3 M1 [4 |5 B X
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not2 U3 s( v* g6 I
green) running along the insulation.5 T5 L% t$ d. [# C" w3 t
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of8 x7 H, a* `* e* G3 m
an identified conductor; however, in the case of those flexible cords where the identified conductor is ^% @8 D% d' A
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.: S* S. A% l' o7 |/ V4 ^
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked: `6 `; O4 d9 o( p' @
as the identified conductor by painting or other suitable means at every point where the separate J U* j, n: v0 v3 Y. R. D. f
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
6 m/ H% s R! v s( d, Ithe painting or other suitable means of marking the identified conductor shall not be permitted to render
0 Z2 X6 V1 i) N% E \* tillegible the manufacturer’s numbering of the conductor. |
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