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this is what code says:
4 y V* _1 M* \: O3 J, }1 i8 o3 H4-028: Identification of insulated neutral conductors up to and including No. 2 AWG; v2 d& j9 G! u, p m1 ~2 I
copper or aluminum
- Y" ~$ p" `+ i(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including, X& T6 h6 M0 n& p+ d; N: ]) V
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
8 G" I. B$ x( r4 O7 Bsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes6 a# Y; n$ `* L9 B" [6 M2 R
along the entire length of the conductor.
5 D o8 L$ h7 V; m1 K(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
5 r4 W) O: q/ ^& I' cand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
+ U5 }' k& H# b( ]circuit conductor of the other system, if present, shall be provided with a specific identification, and the
% q; J/ w9 o- f/ X h, |. x5 Widentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not/ k# B* i: _8 p# j$ n2 t! ~7 J
green) running along the insulation.+ q7 P% ?: [+ I0 S! t; Q. C
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
9 ^" T4 ?2 J, c, Fan identified conductor; however, in the case of those flexible cords where the identified conductor is
1 T9 W/ d$ p, M% A4 x. _$ E! b, _identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.8 m7 A" l/ |4 G" r5 H% Z
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
$ h7 H9 J# `2 X0 k! p5 h! mas the identified conductor by painting or other suitable means at every point where the separate0 J! J) [# [! f
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and5 u, `# r( J$ _5 s8 f- k5 E, [& ?: l
the painting or other suitable means of marking the identified conductor shall not be permitted to render
1 b: a% E5 l; w) D# ?illegible the manufacturer’s numbering of the conductor. |
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