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this is what code says:
1 K: R3 p( |3 f. q4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
5 G3 W! e/ b& L( Q) d O: }$ Tcopper or aluminum) O% @; l8 q' E! W" @+ u: R
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including* C: f3 B9 B( X6 D
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to# o" `% H# U3 L' l B! [" V
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes5 s! M$ m0 L6 _3 s3 Y" u: h. ?
along the entire length of the conductor.
( T1 S8 n3 C" J/ P# ~(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure. k J0 u0 d3 V8 W1 @7 L" B* P: i
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified; G( g- P& l0 x* h
circuit conductor of the other system, if present, shall be provided with a specific identification, and the
5 m2 V$ _, M% j; ]- [* lidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
4 R" r" k! j% Q- |' N% F1 ngreen) running along the insulation.
/ @2 Y# c% D8 F6 z. P7 B) k(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
0 o9 D1 B. v6 @an identified conductor; however, in the case of those flexible cords where the identified conductor is
, O/ E; T5 D$ ~; Oidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
0 A' |1 s9 {- X(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked5 U' S* ^) w e4 H/ [6 k. b- }
as the identified conductor by painting or other suitable means at every point where the separate, E% \4 K+ R( j5 K
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
" c+ n' i5 j% kthe painting or other suitable means of marking the identified conductor shall not be permitted to render6 {. M" p7 Y8 F0 h6 I7 I
illegible the manufacturer’s numbering of the conductor. |
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