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this is what code says:
/ F: \0 O! [6 K Z$ P! r4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
% }% z6 U2 t1 g9 Z3 A9 Mcopper or aluminum2 m [7 \" \1 T n8 L/ \
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
. L7 M3 I u7 `# n$ h5 q! c0 c" KNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to6 J8 w5 _1 s+ ~
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes- T- ~; w% q/ J- U# C
along the entire length of the conductor. Y' |9 G1 t$ ?
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
# ]" ~* T- H( y- W9 B5 A. Kand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
8 j& C5 |* w. D; u0 z# scircuit conductor of the other system, if present, shall be provided with a specific identification, and the
; W$ J+ y/ U4 pidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not# G7 ]$ C: n; B% X+ B$ z
green) running along the insulation.
" f, N: G J) t, k6 T(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of2 [6 v! _ k! ?/ t, p2 P1 i6 K F
an identified conductor; however, in the case of those flexible cords where the identified conductor is- a- E1 w7 K' Y
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.* k3 ], Q0 ^- z
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
7 E( Q8 Y/ d2 J6 d7 p9 das the identified conductor by painting or other suitable means at every point where the separate9 D8 V: `' o; z9 |) n! O. Z5 V
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
. d! s. V5 ^ K& I/ b6 Wthe painting or other suitable means of marking the identified conductor shall not be permitted to render- T8 r! |8 I( A( n! S" s1 F* q
illegible the manufacturer’s numbering of the conductor. |
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