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this is what code says:
' d5 [. w0 y( b5 {8 P! s4-028: Identification of insulated neutral conductors up to and including No. 2 AWG) I/ \0 u2 T4 ]7 ]
copper or aluminum
' p t, H! ~' q$ _; \. z5 W5 F(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including+ f3 D! C9 ~ I0 [' B
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to' t* r2 Z! p7 [3 T0 U
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes& I" ^+ V) R" v+ {9 y D
along the entire length of the conductor.
5 n7 _. y; U ^(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure: M0 N9 i$ ?+ b! D
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
2 o% ~" e) a- O# ]3 x( Ccircuit conductor of the other system, if present, shall be provided with a specific identification, and the
1 W o2 ^7 k- `. ridentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not+ t f# K$ w- Q' j8 U! F9 U V1 U
green) running along the insulation.: v2 ~* ^/ h9 U/ |0 f3 [8 C' {
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
! R2 z) D" l! o7 W4 Can identified conductor; however, in the case of those flexible cords where the identified conductor is
9 s2 J, I5 e5 hidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.# F2 ?$ O! q) X9 J( |# d5 x9 @1 s
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked8 ~8 r2 F0 T n
as the identified conductor by painting or other suitable means at every point where the separate
) G1 b; h% D2 a2 [4 F( n7 jconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
6 T; V2 |. ~/ ~4 Ithe painting or other suitable means of marking the identified conductor shall not be permitted to render
5 J; m1 X" c4 v) Killegible the manufacturer’s numbering of the conductor. |
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