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this is what code says:
8 ~# l( |- u+ ^! H3 g, P: Q B5 d) h4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
3 Z( y* i, J8 j6 [, {: h/ K+ mcopper or aluminum4 @# n0 f6 |1 q- R6 j" @
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including T" x4 d# P3 N& R* H
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
5 d4 f/ s! l& b( X( S/ N' Fsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
) r, X1 X1 n& e m& M& `0 Nalong the entire length of the conductor.
; o. X6 ^) h! ^4 n. y- R: J3 d9 r(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure c& R1 c- D! T* Y r) `8 d
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified) ^0 g2 `+ k5 O4 d, f0 i
circuit conductor of the other system, if present, shall be provided with a specific identification, and the
! \9 O |; O, l. tidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not8 W1 [8 n2 `& \1 k1 B ~. G7 f# |$ ?
green) running along the insulation.
, G. Q4 V( Y+ f" L6 q3 a6 j( p' @" m(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of' A8 B$ C& P8 U0 `3 R
an identified conductor; however, in the case of those flexible cords where the identified conductor is
7 g: l5 t2 B: D" }3 t# B; [identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
. Y% a" l8 c4 h$ u3 @(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
2 m) ~: e; m8 F8 v4 ^" Was the identified conductor by painting or other suitable means at every point where the separate
1 g, i- }4 S/ A4 Gconductors have been rendered accessible and visible by removal of the outer covering of the cable, and& T( y1 e0 g& \" q# I4 Y& p0 G
the painting or other suitable means of marking the identified conductor shall not be permitted to render9 A8 q; Q+ h0 |1 q* g* W, G
illegible the manufacturer’s numbering of the conductor. |
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