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this is what code says:
' J$ m6 l* @) z3 f9 p4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
! q& P* _* A1 K8 ? N* Lcopper or aluminum5 G, Y( ]7 }8 ~& o* x! o5 w6 v
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including; d9 Q$ S; C! e" O
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
/ @3 V' |: ?+ Q0 X' ?6 p& z# p6 Xsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes( t- a2 T! U- {3 v
along the entire length of the conductor.
; n3 f/ X& Z! e(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure) T* T8 g1 w# h7 l Y* S
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
! U- U3 M) b) Z2 E0 O( Q. `circuit conductor of the other system, if present, shall be provided with a specific identification, and the
" W/ T. `/ T( |identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not. V+ g( z/ K2 u9 V
green) running along the insulation.
% m/ q; r0 I- N% n(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of9 q, m& j; O0 \/ K3 k" j) k
an identified conductor; however, in the case of those flexible cords where the identified conductor is O7 ^5 j# Y( d; F
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.5 `2 _$ ?: ]0 f8 K
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked2 q, X* g1 ?# U X" B
as the identified conductor by painting or other suitable means at every point where the separate
" |$ r6 u/ L: X2 D. G @conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
8 ]( P5 n4 ]; s! h( }$ Hthe painting or other suitable means of marking the identified conductor shall not be permitted to render
& R" d! Q' l' S7 b) Nillegible the manufacturer’s numbering of the conductor. |
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