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this is what code says:
" Q) h' I+ t( z, X+ S4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
# i" k) A4 j# y) ^1 M3 x4 vcopper or aluminum
3 o# E* N1 `2 X. L: Q0 S1 [(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
) S. z8 R+ `" d$ C7 Y9 x6 x: [, ^No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to6 F/ k9 w5 M4 N7 N5 o
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes5 [9 H2 a3 K+ S/ i5 U0 n* B8 a& M
along the entire length of the conductor.9 O2 h3 ^$ O) F4 U
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure3 |- Q/ w0 n+ ]% ~. D2 c
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
2 t1 S' [+ `9 n$ O- c; A# }8 n9 Hcircuit conductor of the other system, if present, shall be provided with a specific identification, and the% f( G" y4 }2 o* t
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
8 P" z+ Q% t* G% i( Ugreen) running along the insulation.3 t' T; |- t1 w
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
/ {) o6 v& _3 |an identified conductor; however, in the case of those flexible cords where the identified conductor is
L3 K* E9 k3 z `* @& M9 Qidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
/ U* _8 E( Y7 G, k) e(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
; `9 x. A' S( M& U8 ]as the identified conductor by painting or other suitable means at every point where the separate- l `" W2 u7 k
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and5 c+ }: Z8 A1 ~: W
the painting or other suitable means of marking the identified conductor shall not be permitted to render
) g @- ] l! c. i: Billegible the manufacturer’s numbering of the conductor. |
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