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this is what code says:
: C" H1 ]( d6 B4-028: Identification of insulated neutral conductors up to and including No. 2 AWG2 w5 G7 {4 }. e4 N, e! P+ e
copper or aluminum) Y1 t- o- Q) o; G1 k9 x- [8 k# P
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including3 n3 {6 [: Y# O8 S+ Z. l3 M, p5 x, N
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to H: r& Z0 S5 j: i
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
a6 n7 v, A( c( ]" z/ E) X Lalong the entire length of the conductor.7 T: c, d3 d& D0 ]# I
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
8 l& W, J- D$ eand the identified circuit conductor of one system is coloured by a white or grey covering, each identified4 D, o' C6 H a* \8 P
circuit conductor of the other system, if present, shall be provided with a specific identification, and the9 U* ^/ i7 o: x8 m5 _
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not' k/ |* ^ d7 Z
green) running along the insulation.3 y8 p/ \- Z$ O( H
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
/ `& S; T1 B% ~' g: Y9 `an identified conductor; however, in the case of those flexible cords where the identified conductor is
- c$ P% m0 `: ~identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
9 v. {9 a# c N; c: I# ]* @(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
! B5 `; J% G( q5 t1 m' j1 ~as the identified conductor by painting or other suitable means at every point where the separate) T7 ]: L- F& U- ^
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and. a( {( H5 X) a6 t* l
the painting or other suitable means of marking the identified conductor shall not be permitted to render5 [. h3 y" z3 i' X& B
illegible the manufacturer’s numbering of the conductor. |
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