 鲜花( 0)  鸡蛋( 0)
|
this is what code says:5 t% D O: {' E5 w( T
4-028: Identification of insulated neutral conductors up to and including No. 2 AWG! ^; v/ p, J- [1 G) Z
copper or aluminum
, T/ |( {8 P1 M) T1 O(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
* U. e& u& J& K |0 KNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to9 N( N8 a8 x8 L+ `) z* `6 {2 y2 D
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
$ Y+ r4 l7 Z% G" e4 Ralong the entire length of the conductor.4 ~/ S- h, r) Y; z! d
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
9 C* m0 k, }: Sand the identified circuit conductor of one system is coloured by a white or grey covering, each identified
) ?0 N& k5 M5 |" Xcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
; Y. z! A, j% Tidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
# a& Q3 |- k( y: E- B: \green) running along the insulation.
: b1 y0 P b9 w$ s2 K' _, v(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of& W/ m, c1 u; A# i. C
an identified conductor; however, in the case of those flexible cords where the identified conductor is# Q% X$ e( ?& G: H1 b
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges., h1 O4 m+ l; ?# y
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked* U% Z: J( P6 d- b+ Z& j9 L
as the identified conductor by painting or other suitable means at every point where the separate5 e+ K" o4 U0 l1 J3 X! E
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
2 {" v5 q; j7 ?$ e2 Y$ Fthe painting or other suitable means of marking the identified conductor shall not be permitted to render2 ~5 V; V+ X0 ~/ C
illegible the manufacturer’s numbering of the conductor. |
|