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this is what code says:
, [9 Z. q A. Z( W9 m5 F4-028: Identification of insulated neutral conductors up to and including No. 2 AWG- X, H9 l G2 \. v6 x! j
copper or aluminum
- \. T/ I3 e3 Q& V(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
, Y+ Z, H6 ^/ R5 n4 v( c' }No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
6 S2 b/ W& Z# z9 Z( ]+ S0 K( E4 \such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes y- V' p6 D5 b9 t$ b
along the entire length of the conductor.3 j/ c8 _8 K- {- C
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure8 @5 f7 G8 r& |8 M, Z
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified9 u: B# P( g; [& @' X
circuit conductor of the other system, if present, shall be provided with a specific identification, and the
" k" }/ g6 p- z t& S" z1 i# Kidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not% W8 u s7 i7 b
green) running along the insulation.& E- i9 H. x" y o0 ]
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
+ C5 p, a, }( e3 Lan identified conductor; however, in the case of those flexible cords where the identified conductor is+ A) ~: ?, q, v S% K) v
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.( n) ^2 e; J' V+ K( J7 r
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked& v1 f: |4 @( H7 g4 V8 A1 l* y
as the identified conductor by painting or other suitable means at every point where the separate' a6 t: a; y# D* e% M2 u
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
1 y# |0 U9 o# J9 K$ l. |- B# Z. t$ lthe painting or other suitable means of marking the identified conductor shall not be permitted to render
9 a2 T7 C. _8 Q2 F6 iillegible the manufacturer’s numbering of the conductor. |
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