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this is what code says:
, j+ D( ^1 c) J5 m9 ^/ f) C2 t4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
$ S8 j+ D4 [$ @0 l% n' e5 ]copper or aluminum
+ z* j1 c: t4 h; o- c5 v7 z0 x8 Z- N(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including; s. y1 N, s* ]$ [6 C2 _ o
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to8 S1 F9 R3 I9 O3 K
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
$ V7 x7 I; N7 `2 [ U4 K8 t% v+ Xalong the entire length of the conductor.
3 j! K% V1 v* i# J+ ](2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
0 S" \# q7 ?4 k+ Z% A' Aand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
. r0 ?- U2 K) n( O$ Ccircuit conductor of the other system, if present, shall be provided with a specific identification, and the+ S+ A* y9 w) g- U# v7 Y
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
\5 ^7 o* B9 o7 Cgreen) running along the insulation.
* [! t2 b. v- h, }. ]2 O(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
' j" f& l$ v+ F8 t c( C7 k& }! Oan identified conductor; however, in the case of those flexible cords where the identified conductor is
- ], a4 A5 u7 y/ gidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.- a2 b+ X$ J% }" M- A0 t- c, `
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked* S6 i+ D$ V- I5 Z: ?, j% `- _' E _
as the identified conductor by painting or other suitable means at every point where the separate6 _* |, z6 `2 o) S5 j: }" P$ i
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and4 q) Q5 T- G4 T$ h. v9 n! [8 a
the painting or other suitable means of marking the identified conductor shall not be permitted to render- B& _: W/ @) U0 n
illegible the manufacturer’s numbering of the conductor. |
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