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this is what code says:
" _: p6 v$ U' f9 T, }4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
* [2 h; h L( f' Vcopper or aluminum! J' }- T7 b* @# Z' y/ B! M
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including% ]0 T J( H/ ~2 k2 V- f
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
, U$ W) e" r, jsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes3 B) v R. R6 ?: Q
along the entire length of the conductor. H/ \$ P: \6 g. U2 d# @
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure6 { W- p% e. z9 x0 X2 P
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
9 _: @' q7 G4 e: N9 L/ zcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
7 T: [1 g Z. W+ w5 O! fidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not2 l, _2 z7 a% O& h& ^3 x
green) running along the insulation.
2 z2 W u3 K& n7 s: w, ?(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of' W: ]# f2 j0 U2 b6 f4 ?/ }, ~7 C1 j
an identified conductor; however, in the case of those flexible cords where the identified conductor is6 B2 [4 t; S# B' w" B! _
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
4 w$ ^% j* U. B' R2 ]' M(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked& Z$ ]* ~9 e+ R, G9 `
as the identified conductor by painting or other suitable means at every point where the separate
4 Q! v; a$ m# g% Y2 Yconductors have been rendered accessible and visible by removal of the outer covering of the cable, and4 r3 D/ _$ Q$ {" U5 T1 b1 A
the painting or other suitable means of marking the identified conductor shall not be permitted to render" D' W# H* O' P2 w% Q, g
illegible the manufacturer’s numbering of the conductor. |
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