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this is what code says:
0 \, }9 A+ ]1 ?0 @+ Y8 Q! J4-028: Identification of insulated neutral conductors up to and including No. 2 AWG! d' U8 l; H# P7 e! s, t2 |# i7 Z
copper or aluminum
5 C* J/ P8 E6 L" Z(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
}8 g9 @8 |7 I( f0 O: [No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
. W7 l; `: Q4 m. z$ x3 `/ Lsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes" b u" O0 q# V. ^4 t% X
along the entire length of the conductor.2 M0 U9 Z) s5 v0 f3 A
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure+ A: g m) t9 K0 ~
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
+ F5 [1 g; @( z8 T, g1 y, k# Fcircuit conductor of the other system, if present, shall be provided with a specific identification, and the( [+ c4 v$ g0 ~" C% t* P
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not" ^" o0 o& |+ n9 Z: ]
green) running along the insulation.
; G: G! m0 X8 q' ~, h! q(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
; |- {0 D2 H+ H8 ` n3 uan identified conductor; however, in the case of those flexible cords where the identified conductor is5 v% x$ R6 t0 ?7 O" k9 j
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
) S' B( ]/ ?! s3 o(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked4 p; a4 Y0 g5 ]" g8 G5 V$ l
as the identified conductor by painting or other suitable means at every point where the separate
& u$ a4 v2 l3 p0 ^conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
! T9 R8 a$ {5 j0 B0 p8 r( bthe painting or other suitable means of marking the identified conductor shall not be permitted to render
/ S/ R y0 \% D& cillegible the manufacturer’s numbering of the conductor. |
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