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this is what code says:
! Q) r+ p F; H4-028: Identification of insulated neutral conductors up to and including No. 2 AWG" o9 F% R' c6 k- z9 m4 P( p9 T( o8 l
copper or aluminum
( m! M* q8 y! z- y6 i(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including8 }$ R" {/ M$ P" Q) y
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
; `- u) R- g, H0 |& xsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
7 I& x, `2 y1 ?% l7 jalong the entire length of the conductor.$ Q, B& ]* Q( a0 M
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
" O& a7 ~7 V; y- @8 e3 F$ |and the identified circuit conductor of one system is coloured by a white or grey covering, each identified6 I0 ^9 o: i$ y: h- Q8 m6 Z
circuit conductor of the other system, if present, shall be provided with a specific identification, and the, [! D, E) v3 O3 r/ d( S
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
: }$ s3 v' K: G* Igreen) running along the insulation.
4 V& x5 A+ Q$ l( K; U) _% y3 f(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
! I3 @9 m l' w+ c! k1 Lan identified conductor; however, in the case of those flexible cords where the identified conductor is; E4 c+ f9 q# [* c) m
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
3 _ [- u9 ]; ?) P(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
/ |9 W2 J/ Z- K3 O$ `% Kas the identified conductor by painting or other suitable means at every point where the separate. Z4 H; g. w5 b; f3 M2 d0 R# C4 u
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and& u" P0 J) K7 W: t6 }
the painting or other suitable means of marking the identified conductor shall not be permitted to render
& ?5 C5 y* S: U+ M/ eillegible the manufacturer’s numbering of the conductor. |
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