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this is what code says:
; g. Y$ }7 K$ a4-028: Identification of insulated neutral conductors up to and including No. 2 AWG0 f& ]2 v* M: E. R1 O/ a
copper or aluminum: e, K" T+ E# T6 f
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including9 B! V" H4 L5 b$ {+ [
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
" A9 K+ `8 f- T7 o! o, Ksuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
. e, }+ s. o0 U; r% ^along the entire length of the conductor.
3 l4 c# ~0 l6 f$ ?(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
( v" q Q) Q& i5 b. Aand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
. W2 e$ P; B+ G; s' O2 ocircuit conductor of the other system, if present, shall be provided with a specific identification, and the: \/ e! K( R+ h
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not _: r" ^" w8 ^7 I
green) running along the insulation.
2 r9 E0 u. n h- f(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of8 q! r! r+ r; ?" f
an identified conductor; however, in the case of those flexible cords where the identified conductor is5 S% U! Y1 V! a/ w
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
: ~! a9 E3 G2 W7 \) r# }(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked I/ x- u9 X" x8 K
as the identified conductor by painting or other suitable means at every point where the separate- q; c4 t/ F7 A
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and; ? g( r- Q7 x7 m3 W
the painting or other suitable means of marking the identified conductor shall not be permitted to render
1 F" B# z5 v. y/ H# Q$ V9 T& r& |illegible the manufacturer’s numbering of the conductor. |
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