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this is what code says:
* V* {' I( v5 X( c; I l4-028: Identification of insulated neutral conductors up to and including No. 2 AWG2 f+ Y5 h9 x: j% Q6 H
copper or aluminum, E- K1 a5 z1 I' S
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
+ u3 g8 {9 [/ \7 U# }& n. [3 {No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to* N1 G3 b2 i- Q1 [
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
6 S* M2 p; m2 t$ d3 valong the entire length of the conductor.5 \6 B! n! g( e6 I
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure- H# _5 o$ j$ u7 ]$ H. b# n( E8 k
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
8 p% j( J' _- y& Acircuit conductor of the other system, if present, shall be provided with a specific identification, and the
! `" ]: s# I! y {; R$ Oidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
2 C9 r) y1 b# ^. q- B: |0 jgreen) running along the insulation.
8 p# g3 I, `% H, ?8 J( C" D(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of3 J( k ~! F* X# b
an identified conductor; however, in the case of those flexible cords where the identified conductor is
E/ i) g% w; ]1 j7 g/ r/ Midentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
) E% r( P7 W& i(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
8 E" O8 N0 f, D, h! x: Bas the identified conductor by painting or other suitable means at every point where the separate
, f9 ~/ n5 w% T; W) Rconductors have been rendered accessible and visible by removal of the outer covering of the cable, and# l2 n+ t7 z" c
the painting or other suitable means of marking the identified conductor shall not be permitted to render
* W) u: l3 ` B0 eillegible the manufacturer’s numbering of the conductor. |
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