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this is what code says:
( }5 v6 L" U' K" J4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
) Q1 W; ]# i6 L9 K% s3 qcopper or aluminum& p0 m3 C Z3 B; M" A
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
* d: k: h* E* p" E) { t" m& `No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to: _+ e2 c0 F7 h6 d
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
) m! _3 V, P! H( ?, q6 |% halong the entire length of the conductor.- q8 ]( v6 L A7 ?4 w" ~0 c& D" t
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
5 S! _" w6 X0 U# \) Dand the identified circuit conductor of one system is coloured by a white or grey covering, each identified x- D: Z0 ?/ f: m9 z
circuit conductor of the other system, if present, shall be provided with a specific identification, and the: f' Y8 N) D: w# r
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
% d% |# |! Z/ A9 I# `green) running along the insulation.- J4 e$ l, C; x' s" I; W7 x
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
' H' t, J; P$ T7 `an identified conductor; however, in the case of those flexible cords where the identified conductor is
- H* a) d% v# i) c- W- I2 s6 i2 ridentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
+ `3 k& G2 o/ M0 [- Z: n" ~(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked2 J0 ~' ]1 U. ~ v- n
as the identified conductor by painting or other suitable means at every point where the separate
4 c- ^9 Y( `, l4 U0 k" C, C0 kconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
9 }; u+ A" `2 j! cthe painting or other suitable means of marking the identified conductor shall not be permitted to render
; V0 V7 q9 \! F( b$ ], ^, ]illegible the manufacturer’s numbering of the conductor. |
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