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this is what code says:- R3 V9 s+ U9 ^' m# g
4-028: Identification of insulated neutral conductors up to and including No. 2 AWG( t5 b! ~- f0 X% p% X" t) |4 X
copper or aluminum
! z* F% `4 Z* F- S(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
7 O7 k. W1 k& F# k- F7 LNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
( a" B9 r( j* L& p* Xsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
5 \ V) T. R* w/ v* walong the entire length of the conductor.
9 n; F5 U n, T) l. ^(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
/ A8 ?+ }* E# A* X" y5 `: Dand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
$ R+ _1 {0 T9 X) v( Z( f: ^circuit conductor of the other system, if present, shall be provided with a specific identification, and the- n! T4 Y' ~& n
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
# Y& R# {& T2 c3 O* X+ y5 W4 X+ h) Jgreen) running along the insulation.3 K0 m! }& x6 ?9 w. l' W! B" m$ k
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
2 i/ `5 W/ C( A; S0 l, r) Oan identified conductor; however, in the case of those flexible cords where the identified conductor is
, w/ v4 U3 J6 V0 X9 ~identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
1 J; ]6 j+ v! \; @0 h& t% b(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked# d( W: X/ L$ F+ q( K
as the identified conductor by painting or other suitable means at every point where the separate, @8 N% R* y& f2 ]9 x
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
! H1 w b9 @9 ^8 T0 Hthe painting or other suitable means of marking the identified conductor shall not be permitted to render9 J$ I6 q( L' A9 j+ _5 H" K
illegible the manufacturer’s numbering of the conductor. |
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