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this is what code says:
& _) `+ y% G6 e, L* e. i4-028: Identification of insulated neutral conductors up to and including No. 2 AWG% W3 _% k* d6 X& _0 b, c1 Z
copper or aluminum; b0 J) o- r' r- H8 r0 K' _
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including3 [) l1 T4 R. D
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
6 f( v) F/ A+ F/ f5 zsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
' Y" x8 D8 W9 |4 ^along the entire length of the conductor.7 k4 S* \) e) k' _3 ^& ~ R& K/ q
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
) c# N7 _" L7 o$ ~3 x2 ^. Wand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
; z. u+ j* [# x, g, v2 I% O+ X( k- xcircuit conductor of the other system, if present, shall be provided with a specific identification, and the2 n# w; O8 `' m3 n0 {9 I
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
' J* `; ?1 S1 n9 c! y* Bgreen) running along the insulation.0 K3 ^4 r a) j) g" Z& d9 {! S
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of: E: Y7 }5 W4 \
an identified conductor; however, in the case of those flexible cords where the identified conductor is
. a. G8 C4 O% O- Y& sidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
! t( o9 R" Q. x/ N- g5 ?(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked z. g Q. W5 }/ ?- b" j% a
as the identified conductor by painting or other suitable means at every point where the separate# B' _: M5 G& y; {
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
2 N7 E3 J/ _6 ~$ j$ v+ Dthe painting or other suitable means of marking the identified conductor shall not be permitted to render
, Z. F# X1 |! i. i4 s# J% lillegible the manufacturer’s numbering of the conductor. |
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