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this is what code says:
! b7 z% a, P7 c4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
& G, ^0 V" f3 E9 Lcopper or aluminum3 ]/ _- K, \" R- u" d. N9 s
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
n |/ c3 h0 B" s& E5 {No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to5 h$ Z% F4 I! U9 a
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes8 ^4 m1 s, N% }# [. S; \" R
along the entire length of the conductor.
! H% }! J2 w( ~2 |) F(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure! O% s( y: }7 e$ [) S1 \; {7 X( |, z
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
- W, y% f, P/ M# W8 Vcircuit conductor of the other system, if present, shall be provided with a specific identification, and the; I# v) G+ @) C
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
6 L, H% x8 Z9 X. {3 F; ugreen) running along the insulation.
5 F7 k- k+ n" D8 s2 d4 }(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
: a/ F" B5 ^4 W, ]an identified conductor; however, in the case of those flexible cords where the identified conductor is
4 }& R; G* X }, q5 iidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
. \+ r6 Z9 _3 b, J; a" O/ ~0 |2 b(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
# e- S& [$ k3 I* |4 P8 sas the identified conductor by painting or other suitable means at every point where the separate* w* w$ O: Q k# @
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
; ^. C& }# c# z) Nthe painting or other suitable means of marking the identified conductor shall not be permitted to render y0 R: k) ]0 v" ~- x, Z
illegible the manufacturer’s numbering of the conductor. |
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