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this is what code says:
3 s% I- x7 f) n. x4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
9 N) u2 l, D' B' B/ [copper or aluminum% ` Z' o: i) }+ C* b
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
0 r0 F- w* U+ _2 tNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to6 M* e3 m$ q6 a1 t% \
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes7 Z& T$ n, u6 ], m3 F
along the entire length of the conductor.
0 X' [7 L ?% Y4 W i3 e% ]& S0 y; Q(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure/ q9 s3 D; Y* y$ g/ }( m
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified8 u- M9 Y |0 m" V8 O& E
circuit conductor of the other system, if present, shall be provided with a specific identification, and the! j# o$ C& Q) l: v5 F2 c+ f* [
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
) N1 {( t' f' e3 z; r( \1 x' mgreen) running along the insulation.% ^$ p2 T& _% A% Q7 W6 x4 s" f
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of6 J% _& u0 ?- h4 v4 m
an identified conductor; however, in the case of those flexible cords where the identified conductor is
1 ^/ ]- H0 [1 m( Cidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
" D! C# n) `' f* Y9 z) _(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked. A. S; ~& U, [. n8 g8 ?" u
as the identified conductor by painting or other suitable means at every point where the separate
1 {) Y5 M- h. X5 f8 Kconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
' R; v& M! o: e, ^$ ^/ Qthe painting or other suitable means of marking the identified conductor shall not be permitted to render, W% F6 e4 h; S2 c! D+ K
illegible the manufacturer’s numbering of the conductor. |
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