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this is what code says:
5 q# U! p! y5 p4-028: Identification of insulated neutral conductors up to and including No. 2 AWG2 D' x1 p; \, U% L2 b6 o
copper or aluminum
0 ]; q$ R K) U5 b" X- c(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including3 l2 O% c. L* w% |( z9 F5 H% L
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
% X; t3 E5 Q( k! i# usuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes2 o* Y, ]3 l9 m$ O) j' [* L3 X
along the entire length of the conductor." L* p% N ?' x7 s7 D
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
* S8 }( u \5 c7 Fand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
! |- B: a1 N+ H# U7 t" wcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
5 e) f8 ^3 y* z3 `8 a6 k( Q% Gidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not, R; b8 ~* B* ?! ~
green) running along the insulation.
0 A9 _9 t/ y# }7 q; [% q(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of3 t) G! S- ~1 Y: {+ B8 k0 T2 ]
an identified conductor; however, in the case of those flexible cords where the identified conductor is* I+ Q) p5 ~) }
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
2 N1 {! ~! u( c2 s0 d(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked" x, J) H4 L4 @! I1 U
as the identified conductor by painting or other suitable means at every point where the separate
1 C: E: |. x K+ j# zconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
# {- d4 E6 P+ m+ L6 ?9 Ythe painting or other suitable means of marking the identified conductor shall not be permitted to render
M% S/ C; Y5 r, q3 m6 Iillegible the manufacturer’s numbering of the conductor. |
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