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this is what code says:
. B% E9 g' t7 L1 C4-028: Identification of insulated neutral conductors up to and including No. 2 AWG; ]1 ?7 _/ s& z" ^; g
copper or aluminum% Q6 K/ [: u' z3 z" |
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including3 }. a; d5 \7 E, T; e/ A+ [" U
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
# b" z9 h+ D Tsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
# a4 Z; @: b9 d3 Malong the entire length of the conductor.( n% Z: Q# S. ]; C0 E# h
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
: S& r0 S+ i \( Wand the identified circuit conductor of one system is coloured by a white or grey covering, each identified r; q& W; \- @: C, d/ A @1 z
circuit conductor of the other system, if present, shall be provided with a specific identification, and the' k2 J1 S: y' u% C: D/ W% w3 D
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
8 p" ]6 Y* k3 Hgreen) running along the insulation.0 Y5 p# V) u0 c! g* j' S1 s9 W
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
$ E y! ^1 h* K& D+ h" nan identified conductor; however, in the case of those flexible cords where the identified conductor is
* G$ U7 I. ?) R2 L5 V1 \1 uidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
9 T: k8 e2 w; n. }4 n& X" H4 T' C. Y(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
9 ~2 z+ s) [! z! f: has the identified conductor by painting or other suitable means at every point where the separate
/ l3 v7 L. l$ i$ P' gconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
& Z. ]. ^- ^0 V1 ithe painting or other suitable means of marking the identified conductor shall not be permitted to render2 G8 b+ |/ p) \4 {' w9 e
illegible the manufacturer’s numbering of the conductor. |
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