 鲜花( 0)  鸡蛋( 0)
|
this is what code says:- X% Q$ v; N _
4-028: Identification of insulated neutral conductors up to and including No. 2 AWG7 N# v) s1 V; e0 ^
copper or aluminum) y: q) O3 c; _- c6 u0 o7 F. ?5 G. x0 i6 o
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including( |. ?1 E7 e# p+ F# G; B
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
- }. ^- h% o( U0 Msuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes7 X+ }* W' ]" D# ]: n* E9 P" N! D
along the entire length of the conductor.
( F" w4 P- f" I2 o" _(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure% Q/ C1 z! ~$ p/ ]* B9 _
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
' x3 R% m {6 X: o/ bcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
0 M; ]* W' S# A7 C$ [& J7 L. Hidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
8 u( O( N7 B9 j8 [green) running along the insulation.
7 B2 O2 T: G1 J% z8 h(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
4 U0 B1 U% } b& F% d* Z3 v( _; ~0 `4 ean identified conductor; however, in the case of those flexible cords where the identified conductor is
- A2 ?. Y. b" q4 Hidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
5 ^$ L# u0 R* k. \(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
# Y$ Y2 ~& Q: Has the identified conductor by painting or other suitable means at every point where the separate
2 S7 a* w) W4 c* Y% `conductors have been rendered accessible and visible by removal of the outer covering of the cable, and" @. x- I6 Z7 @( p" w. C) \
the painting or other suitable means of marking the identified conductor shall not be permitted to render, X6 v0 X$ T+ o, k
illegible the manufacturer’s numbering of the conductor. |
|