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this is what code says:
" a4 z' j) Y0 [7 L( }4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
4 \* \) w4 l. G. K# m& Jcopper or aluminum8 z2 R$ e$ e* e6 f! V; R; U# M3 e6 w
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including: p2 Q! [2 O0 |7 r8 P
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to$ w& x1 r* w( d& F) k# E
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
5 f" s: `, U* `; F- e: Balong the entire length of the conductor.
+ a- E0 L5 n6 }0 @9 G3 N(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
& P+ X$ N2 ?2 A2 b* aand the identified circuit conductor of one system is coloured by a white or grey covering, each identified# X- E S+ H1 Q# a+ n2 _ ]
circuit conductor of the other system, if present, shall be provided with a specific identification, and the
2 [3 l) `% O2 `$ Uidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
0 H. M! K' H& Kgreen) running along the insulation.
; w9 j- L7 u! L) x$ H(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of5 X; f5 D+ ~$ c S3 d
an identified conductor; however, in the case of those flexible cords where the identified conductor is& M$ c; Q% R( O( p
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.. B* M% ^ ^; ]% i
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked, W7 ~% T* d3 g9 x+ \* l
as the identified conductor by painting or other suitable means at every point where the separate
6 S2 ]" k& ]9 B+ B* Yconductors have been rendered accessible and visible by removal of the outer covering of the cable, and' K0 n" T/ M5 [7 Z& p7 c* ?0 ~
the painting or other suitable means of marking the identified conductor shall not be permitted to render) {$ _* O0 `, f
illegible the manufacturer’s numbering of the conductor. |
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