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this is what code says:
1 i) u" O) s$ @& N! b8 \3 j+ u) r. V4 c4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
- g) F+ z/ |& O! F3 e! ^copper or aluminum
9 S0 c+ u X. a(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
$ X- |. ]+ `9 w" N# LNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to O$ s0 e/ ~2 N- U9 s* |
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes2 D% j+ B# L Z/ u, [& g
along the entire length of the conductor.
5 _( I9 c5 H2 F; v& `5 x(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure/ |& j7 S, M; L" ^3 M& t
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
/ {) y8 x ]* Y7 n# ~circuit conductor of the other system, if present, shall be provided with a specific identification, and the W6 k5 y" F- r" m8 ]( e K+ I3 Y! n
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not( R: `4 n, m5 J! r; t
green) running along the insulation.( C D& E0 J7 ~/ W6 K; h" D
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
3 d- V4 k- |* `. d: Oan identified conductor; however, in the case of those flexible cords where the identified conductor is( C+ h7 u1 ~. E) R$ \1 S6 f) A
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges., R1 Q; f! E/ e$ Z" j! e1 O; x2 v
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked3 q0 c3 H. f( t# N; ?/ N, D
as the identified conductor by painting or other suitable means at every point where the separate
* o% ~6 { D: N' v- n7 m6 r) E! Wconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
- E+ m. I E9 g9 V& xthe painting or other suitable means of marking the identified conductor shall not be permitted to render
- p% f& n* U* P; [" a$ uillegible the manufacturer’s numbering of the conductor. |
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