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this is what code says:
& N8 g0 W% f( X: O$ v. D4-028: Identification of insulated neutral conductors up to and including No. 2 AWG4 F$ z) D' ]' m% @
copper or aluminum
4 u' [, }- N. w+ J(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including7 O; @* G" ]& g3 \
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to7 J0 ?/ g" l! Q: j9 H
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes1 x* e+ k: B' o
along the entire length of the conductor.
/ V. @+ }, M# B) A% t(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
% o/ [5 L# p, U, f4 dand the identified circuit conductor of one system is coloured by a white or grey covering, each identified2 d/ `6 Y1 `$ z' G* Q+ [
circuit conductor of the other system, if present, shall be provided with a specific identification, and the
: r0 @" |5 j# N) A+ z( m4 fidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
5 ]0 r% Z+ @0 d8 y9 l7 ~green) running along the insulation.3 W* V2 m6 u4 o- W
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
& t G# q1 z2 |7 B# Jan identified conductor; however, in the case of those flexible cords where the identified conductor is9 g) S! y/ G% S% Q7 @! O3 |
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
, l3 N9 k. M; k5 H3 [" ?(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked% e! b. T' B8 ]* k$ {, w: b
as the identified conductor by painting or other suitable means at every point where the separate
1 L# ]- x3 s' u- T$ e2 w6 I% Wconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
* Q* o' p5 e7 r! {& }' r9 ~the painting or other suitable means of marking the identified conductor shall not be permitted to render4 R" J1 [" J) w* _% k% ^! Q$ U
illegible the manufacturer’s numbering of the conductor. |
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