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this is what code says:
7 d; _, m8 t- D0 r0 J. E4-028: Identification of insulated neutral conductors up to and including No. 2 AWG, w+ ]0 U2 ]3 s0 ]# F1 n
copper or aluminum
. @9 v) v. s( ^7 h0 H(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including+ V' c1 G3 G; x* E6 g
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to+ d3 p l2 N% `# a0 Y$ n
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
) z/ q4 c1 P- c# X3 l/ @) Balong the entire length of the conductor.9 A, ~6 W4 c0 I
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
( Y4 h" r. Z( x: B: Pand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
2 B5 `, Q. Y1 A5 c" x0 gcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
" O1 e4 e4 M. Q `) {, Zidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not' k, |" s' }8 {, w2 s9 o
green) running along the insulation.4 }2 T4 i! |4 u7 U6 B! B
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of' Q( w; B- Q5 N: ~
an identified conductor; however, in the case of those flexible cords where the identified conductor is7 B! r4 a2 h+ z& H
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
9 _0 r/ l: n0 z) y(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked5 j: e' H& }7 x) P! A; I
as the identified conductor by painting or other suitable means at every point where the separate/ R0 d5 f9 n" _' S' x6 S7 D
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
: C4 t& m5 r0 v1 c2 i2 h& Lthe painting or other suitable means of marking the identified conductor shall not be permitted to render
6 U5 j" t2 T0 g: Y6 fillegible the manufacturer’s numbering of the conductor. |
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