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this is what code says:
) C e0 V$ K, j& O0 v5 N4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
3 E+ D9 X* Q6 Rcopper or aluminum
6 ?7 J9 t4 \- w. U4 {* @(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including7 A9 r0 K1 Z0 p, Q% A0 n
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to& J1 q+ ^# }- Z+ \) c
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
! {) O! ~/ i, b. valong the entire length of the conductor.
6 L+ l9 t0 e- ~+ n, Q/ X4 Y(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure4 r/ e4 f( P! ] n
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
' R5 W+ l. q! w3 p7 u$ s$ ~circuit conductor of the other system, if present, shall be provided with a specific identification, and the
+ X) J# r9 @+ f3 Z R; Xidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
( U5 T4 X( I! z6 Tgreen) running along the insulation.
, o" ~6 [6 I3 M( n5 o(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
" }( r- l$ Z; z1 uan identified conductor; however, in the case of those flexible cords where the identified conductor is5 a( h2 R8 T I4 ?9 S
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
& F; r Z6 Z& P0 N(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked& s+ l) q: e, P: g
as the identified conductor by painting or other suitable means at every point where the separate; J; U$ F, T, f$ m: @* L
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and; ?* V# P) a5 v, _- d
the painting or other suitable means of marking the identified conductor shall not be permitted to render( `" h: S5 ^8 y6 }& x
illegible the manufacturer’s numbering of the conductor. |
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