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this is what code says:
$ v* F* Z2 w3 r+ m! k4-028: Identification of insulated neutral conductors up to and including No. 2 AWG) M# z- u8 e( ]5 [ c) q# R0 @
copper or aluminum
8 I) g O, q, a' k$ x5 }# \7 ^(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
4 E& d; j/ W) Y" D I/ d# hNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to! R" X0 U3 ^# C* h9 C1 C
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes6 ~/ K* t8 S- c: ^' `6 T
along the entire length of the conductor.
( n# u9 @' p, S( m8 W; ]2 G0 i(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
" l; b3 f5 o( Z* Q2 f* Zand the identified circuit conductor of one system is coloured by a white or grey covering, each identified* ^( w2 n+ |9 r2 m- p6 s% I
circuit conductor of the other system, if present, shall be provided with a specific identification, and the
+ E T" m4 Z: K- g3 Kidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not* T8 R1 ^# ^, I& k* F4 t! n- V
green) running along the insulation." U, C+ h- f8 E
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of. y4 u! K& m! F4 w+ m8 P
an identified conductor; however, in the case of those flexible cords where the identified conductor is
6 `! @0 }/ {- L( Didentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.( Q( Q( z. `% k T; E
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked/ H2 d$ X& ? g1 S' f0 V* j
as the identified conductor by painting or other suitable means at every point where the separate
- P I5 s: o. qconductors have been rendered accessible and visible by removal of the outer covering of the cable, and7 g$ o8 ]+ R6 o- i9 M8 X
the painting or other suitable means of marking the identified conductor shall not be permitted to render
& l: P3 T( \6 ?7 o/ X/ ?illegible the manufacturer’s numbering of the conductor. |
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