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this is what code says:- s, j$ o+ w$ I8 o# I
4-028: Identification of insulated neutral conductors up to and including No. 2 AWG$ [4 O5 L. G3 ?$ [. N0 R
copper or aluminum5 ?5 ?! Z' b( e- u
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including1 g, j8 K# O0 _
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to9 b9 s$ H- B4 J5 o1 l
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes9 ~ T! l; f6 m- k3 O" y- P. q
along the entire length of the conductor.
Y4 h: D* K; z(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
, f; ] J+ l$ X1 yand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
7 \. a' X9 S( Y2 w5 d2 ~circuit conductor of the other system, if present, shall be provided with a specific identification, and the
0 [! u; }8 m3 d1 cidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
; ~$ D/ Z* a! X7 ]green) running along the insulation.
) x9 Y- g) @8 R(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of! `; Z$ {& l2 J! S2 U4 I9 z
an identified conductor; however, in the case of those flexible cords where the identified conductor is
; K& L) Y) O3 S# e' gidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.4 t( m3 ?, \* r
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
7 X0 w5 C- P! E0 I9 b. ~# B9 Ras the identified conductor by painting or other suitable means at every point where the separate; g. {' i# @& V3 k- |1 u
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
& N- K' Q+ ?9 n q" Zthe painting or other suitable means of marking the identified conductor shall not be permitted to render* c4 z- }+ }' N; z8 }1 a! Q( |1 T
illegible the manufacturer’s numbering of the conductor. |
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