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this is what code says:9 F4 a% Y* E/ p& k+ s5 B; {! m2 S, h
4-028: Identification of insulated neutral conductors up to and including No. 2 AWG0 `6 o2 v% P M. E; G) b2 V# l0 i
copper or aluminum
' f7 |- `6 X+ a% x' V+ m(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including9 l. f% m- Z1 A) N2 @- B
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
0 D7 h+ K8 ]* U% x( m; z( U9 psuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes0 w6 F* }6 D0 x6 A
along the entire length of the conductor.( i; G5 h! I: _7 m/ o7 c- k. g( Z
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure2 I2 y" E0 |& q( H r
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
1 [ r1 X; g8 J: {& fcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
1 n! I3 Y- p) e( z- k8 ]identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not+ P# I: i6 R/ E1 q
green) running along the insulation.
% [( q3 x; Q8 g W$ o" _(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of* P" Y1 |& f1 b0 F1 y; [2 a( v: B
an identified conductor; however, in the case of those flexible cords where the identified conductor is
% b9 S) ~. T# U* a. _identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.4 Q; R4 g( T1 y5 T" j/ ^
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked, Z, q( k0 r/ r
as the identified conductor by painting or other suitable means at every point where the separate0 U9 V; Z8 i8 N% T; I" q" H4 I
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and/ r \: {3 w% [4 F, G* |/ u! V3 v3 A
the painting or other suitable means of marking the identified conductor shall not be permitted to render& X/ l* k" m+ l- f; [2 U2 o
illegible the manufacturer’s numbering of the conductor. |
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