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this is what code says:
3 w7 K( I I0 u7 W4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
6 t# Q+ l0 X1 m/ h/ Jcopper or aluminum- m7 E; d6 u, f
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
3 a9 K2 X0 V$ S! g6 l+ N7 P3 Q+ h1 RNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to, Q, H+ @* y- n5 P0 q, U3 n
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes# ?6 K8 M* f* L3 i: U9 w6 d
along the entire length of the conductor.
, [) Y* I s9 u9 q9 |(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
8 I( |4 E9 ^: o0 z+ T( kand the identified circuit conductor of one system is coloured by a white or grey covering, each identified0 {, ?8 N f( f. E: A3 Z
circuit conductor of the other system, if present, shall be provided with a specific identification, and the K% ~# o) c- O& R/ M" J7 u
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not: u% N5 w3 N0 m
green) running along the insulation.0 ? x- [, ?8 @8 [) F3 Q$ F$ n
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of# k" r+ K; p, o# p( F: Q X
an identified conductor; however, in the case of those flexible cords where the identified conductor is; r4 t4 t8 a2 ?4 `
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.8 [/ F% u4 d* i2 d+ P5 F. o
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
G5 h7 y6 z1 P; d; j2 e* @! Fas the identified conductor by painting or other suitable means at every point where the separate# {* ~9 U6 m4 `1 y( [! c' i$ l
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
6 {$ L2 U4 x Ythe painting or other suitable means of marking the identified conductor shall not be permitted to render: x* _! h, C( s9 W1 [- r% L
illegible the manufacturer’s numbering of the conductor. |
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