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this is what code says:
) H; }1 ^9 o1 q4-028: Identification of insulated neutral conductors up to and including No. 2 AWG7 v+ {; ^# [+ D# G' Z. X! |
copper or aluminum
- N8 t8 z, g: f7 E(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including1 n0 f) W" P& y2 X+ p8 m* k
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
: I9 o$ {. R& M/ V. j2 [+ `1 R; ]such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes) _7 D& ^$ b6 s( s/ P
along the entire length of the conductor.
! S C7 I: x7 i7 I. b9 R, \: ~+ m(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure% w6 [, u8 o6 b3 l; T d
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
j7 }, v( u6 N/ P& Lcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
4 L) }( L9 d6 O. @. @& B7 \; kidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
7 W. Q; _6 }/ K3 T0 ~ v/ Xgreen) running along the insulation.- m5 I; {( j1 `0 N e
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of* t3 B. R6 Q, ^) _" E
an identified conductor; however, in the case of those flexible cords where the identified conductor is
! }$ M- ~3 f F8 v. ^( qidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.1 u* z1 u& |% L$ G% B
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked* @4 |- s; ]% d3 y' [
as the identified conductor by painting or other suitable means at every point where the separate
& s$ G8 y: f7 j. g$ Kconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
) s1 y9 u! D; ~ i7 cthe painting or other suitable means of marking the identified conductor shall not be permitted to render
) ]- u7 b$ d! O, w6 Hillegible the manufacturer’s numbering of the conductor. |
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