 鲜花( 0)  鸡蛋( 0)
|
this is what code says:
2 G& T! ~3 V, V) @( a4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
9 d+ R- ?6 Y. a( d7 Z3 tcopper or aluminum
$ |! V) c) K! Q- c(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
+ U3 A8 e3 I+ M7 ]5 h8 H1 NNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
- l5 e( o) J) z0 c1 {6 ~8 A$ R {such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
- S M3 m: e, y/ ^8 Y* Q/ ?along the entire length of the conductor.6 E ` Q. M2 I2 _
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure7 g- e* V8 y9 c) o/ X/ q+ o
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified! i& o. E2 C& m9 n) P' V) k: w l
circuit conductor of the other system, if present, shall be provided with a specific identification, and the6 G' a& w6 q( ~+ {
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not6 [% R$ E5 p7 S7 P% u0 i
green) running along the insulation.; t" q, w4 S) C+ c
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of/ H: m) f! w# Y5 P) ?
an identified conductor; however, in the case of those flexible cords where the identified conductor is$ O! A4 W! V3 V, K$ W
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges. r+ B9 A. ]7 J, q$ m+ J$ _' y
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
% L9 V$ [/ a3 H9 T1 qas the identified conductor by painting or other suitable means at every point where the separate
! m5 ]$ T. x& y( A8 tconductors have been rendered accessible and visible by removal of the outer covering of the cable, and0 U; q# I" b; [
the painting or other suitable means of marking the identified conductor shall not be permitted to render2 t9 e( t7 t* G$ s. z
illegible the manufacturer’s numbering of the conductor. |
|