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this is what code says:
/ f! _# B7 G' s6 ~4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
$ ]4 N( l4 J1 D' A( z* Ccopper or aluminum0 A/ ~) Y5 g4 Y7 b
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
, h0 X" a1 W0 t V# J& Y# E# I2 YNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
2 @! r! w' v$ v- `) C8 Bsuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes9 ^; `1 j2 F5 S# w+ u8 K' Y
along the entire length of the conductor.
. F* G/ V) N6 v1 ~2 W" }8 _(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
5 D$ L/ P6 ~( O4 P# @) G: iand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
8 g. J' x. M1 J/ y. l# X9 Z; u, Xcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
3 c! \2 k6 `8 y5 m/ t0 N' cidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not6 i$ j, U" M7 F2 C6 P7 R
green) running along the insulation.
$ `6 h1 I2 a: b' G$ ~1 W(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of& }* N7 e) Q* S$ o2 p3 a" m# ]
an identified conductor; however, in the case of those flexible cords where the identified conductor is0 ^. L2 R& }2 Z5 w* y
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
7 R4 X3 B4 }3 J(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked+ k, Z$ K* }. z5 D8 c2 w7 Y
as the identified conductor by painting or other suitable means at every point where the separate
8 u2 H3 w, K9 [ a k! `conductors have been rendered accessible and visible by removal of the outer covering of the cable, and+ i" O- J& ]9 b' i
the painting or other suitable means of marking the identified conductor shall not be permitted to render/ x7 v, @6 l; }# [ M. c. w
illegible the manufacturer’s numbering of the conductor. |
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