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this is what code says:
( R; X& |) L. E& a) X3 F; `4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
: L: r$ ?1 z* ]4 I+ q2 i& O3 Qcopper or aluminum
3 [' K4 K& u q, a0 H' V8 H(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including( ~9 i" Q' c& o# X1 J6 ^
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
* c* f" Z# O* ?- osuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes+ M8 ?0 M$ ^/ `1 q; j1 y
along the entire length of the conductor.8 k+ z5 V$ j$ T* z F4 L0 Q
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure/ k+ p7 W6 x# L
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified: _ U/ b/ J& B
circuit conductor of the other system, if present, shall be provided with a specific identification, and the
# r' x" G, R: [5 pidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not, q2 Z0 ?5 B# c* m$ x& J
green) running along the insulation.
% p, }; n5 B) t6 P j(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
+ P7 O6 g- Z. R" o/ van identified conductor; however, in the case of those flexible cords where the identified conductor is
$ p/ q, S: Y3 o0 `2 c. oidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.+ m7 A: A0 M/ J# A% e" C
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
5 e# r9 J3 R" ?* a0 Fas the identified conductor by painting or other suitable means at every point where the separate
$ ~8 v" Q2 r! }* [. K5 @1 uconductors have been rendered accessible and visible by removal of the outer covering of the cable, and
+ S* V# x& f+ U( u; B1 \the painting or other suitable means of marking the identified conductor shall not be permitted to render
` W; ]: n# X3 v/ U1 w" qillegible the manufacturer’s numbering of the conductor. |
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