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this is what code says:
8 R$ _( v5 ~7 B0 t3 r4-028: Identification of insulated neutral conductors up to and including No. 2 AWG1 I/ Z- T3 O) T1 T% B' h
copper or aluminum
5 l2 H: p/ Z( I$ y/ d(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including, x$ f' c3 T8 R! G# j$ m( S
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
- L' U% f; l6 u- Bsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes; z4 T Y" s1 p. X8 u
along the entire length of the conductor.
5 N6 w0 K4 p; ?& O( S3 ?8 a(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
, O8 L1 W2 b. f& [4 D8 Nand the identified circuit conductor of one system is coloured by a white or grey covering, each identified: p! [+ e- d8 j3 [3 n
circuit conductor of the other system, if present, shall be provided with a specific identification, and the1 B# `" H1 f4 ?: Z
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
. V* P6 M' w+ @% V$ I6 B' ]1 Hgreen) running along the insulation.
7 Z: R* y, A/ V8 b, R. n$ O(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of- K3 n4 w! c/ [* x! J% {
an identified conductor; however, in the case of those flexible cords where the identified conductor is% `( u( }; [# D% C( r5 P1 u
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.* V- m% @- Z, h4 d9 m+ ?
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked1 R: f# l, _3 t" m$ D
as the identified conductor by painting or other suitable means at every point where the separate5 a0 ~- A. K; y, G" S, C% w
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
- e5 v, I, E' S* {2 U( ythe painting or other suitable means of marking the identified conductor shall not be permitted to render
+ w! g& D3 q* z1 z# ]# F& Iillegible the manufacturer’s numbering of the conductor. |
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