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this is what code says:
/ I0 \, F8 Z4 z9 g/ V4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
, T7 p3 T0 i; j% h* g+ C2 ucopper or aluminum! A! W8 A/ f0 X
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
. ^3 V) V3 v) X3 `: `9 ENo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
9 R. o/ V/ b" r8 X' Qsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
; \3 L. }3 g/ x- E) ualong the entire length of the conductor.
; P, X, E; c& H; y+ k(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure2 Q4 C9 j9 d7 Q- T% B$ i
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
1 k; B+ ?/ Y" Icircuit conductor of the other system, if present, shall be provided with a specific identification, and the! X* W2 D# C: [/ n
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
. @8 V9 c. ]/ F4 p% i Igreen) running along the insulation.
9 k# Q s% j; \* h7 i( P9 x(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of) N5 g5 f+ k1 k: J2 S3 _
an identified conductor; however, in the case of those flexible cords where the identified conductor is
, O+ Q! V9 y1 ^: @: j0 o) qidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.% [" [7 c* n: G) z0 t! r4 S: I
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked. y- G& ~1 ^1 @8 o( L
as the identified conductor by painting or other suitable means at every point where the separate% Q0 Z2 I9 L( w7 S3 {( P
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
8 i6 ?9 b, ~' C$ L# M* O2 Ithe painting or other suitable means of marking the identified conductor shall not be permitted to render9 q" K& a+ v' J7 ^ W
illegible the manufacturer’s numbering of the conductor. |
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