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this is what code says:4 D ^" e7 X: L$ s
4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
* p6 j% h& T5 N+ A8 L2 C; ucopper or aluminum% s3 I' ^5 m8 P$ n
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
3 U0 K4 M y% b! a4 a" @No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to, Q8 j- K# M2 Y
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes8 V0 s6 H% o2 ]" U
along the entire length of the conductor./ C% ^2 q" \3 x5 l
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
2 y6 |3 U H' a- Y+ dand the identified circuit conductor of one system is coloured by a white or grey covering, each identified7 j' t" R7 O! }, _ L1 Z, H: x
circuit conductor of the other system, if present, shall be provided with a specific identification, and the2 B( c5 l& Z+ V9 ~, c5 ~
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not1 V0 t. d' n: ~5 X- M
green) running along the insulation.; }. a; \4 G/ S! w$ r9 a5 _
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of" _" l I k! ]8 N9 W3 K
an identified conductor; however, in the case of those flexible cords where the identified conductor is
0 } N! c S3 D# C' Bidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.) P4 C. `% [; V2 Y4 H6 }
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked9 Q0 K" u" N# z/ [+ ^! _9 U
as the identified conductor by painting or other suitable means at every point where the separate
* r3 z. Y$ s7 \2 Econductors have been rendered accessible and visible by removal of the outer covering of the cable, and+ D/ x5 {# }1 ]( d0 }9 H! W
the painting or other suitable means of marking the identified conductor shall not be permitted to render |; s" e% O4 H2 ]' X
illegible the manufacturer’s numbering of the conductor. |
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