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this is what code says:
: O; P5 P' P4 d- f! D( ^4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
2 E8 |- a+ _% l9 fcopper or aluminum
9 b; Q- t7 p7 s1 C3 ?1 M(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
" ]) U8 m2 Z# J# V( {; y' TNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
# e3 l. z% y: R2 e$ Osuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
: C/ E1 B% d6 G6 Q9 qalong the entire length of the conductor.+ S3 B* F' d6 J% B9 h% v
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
6 l. \8 G, t+ y( t+ H6 k- p" ]and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
* ^/ }: L( ^- z; hcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
- n# p6 ~6 V& S) ^, v3 Didentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
! M; f: e" O! j2 U# L; xgreen) running along the insulation.
! n; s. b- ?& _! T! W& ^- L(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of+ p/ M9 [9 T! Z& }) @* X
an identified conductor; however, in the case of those flexible cords where the identified conductor is
0 i* g" o8 [. r2 t3 Midentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
- @( D4 z: `% \3 G% R(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked7 X! z( B% b7 e: W4 S5 ?8 e' e6 ?
as the identified conductor by painting or other suitable means at every point where the separate% y8 ^4 C& E2 m4 G3 \: J4 N
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
' N+ o) @0 e+ Qthe painting or other suitable means of marking the identified conductor shall not be permitted to render% O& T! j& _" l
illegible the manufacturer’s numbering of the conductor. |
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