 鲜花( 0)  鸡蛋( 0)
|
this is what code says:
$ I4 P6 f& C l* o8 E% M4-028: Identification of insulated neutral conductors up to and including No. 2 AWG
1 @' \5 n' j$ Y! E' e l; o6 Icopper or aluminum
- n. A& @/ f' `3 V(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including, u- ?1 U3 u; Y% G1 O& p" _9 E( C
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
$ Z+ i: Q5 t, C: p1 Osuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes2 Y/ a, J1 F, _7 d6 u" l6 }) y8 ^
along the entire length of the conductor.
: C% s% S7 d; a B* q+ D(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
+ ?8 O1 h- Q" R& band the identified circuit conductor of one system is coloured by a white or grey covering, each identified( C" C; o) k3 F# u8 ]3 R
circuit conductor of the other system, if present, shall be provided with a specific identification, and the! S! y/ D% B0 d1 l
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
9 \ ]( h1 ~* t7 C: c9 V4 xgreen) running along the insulation.
" x- r( B, z# k' ?- R: R& a7 h- P8 h& B* B(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of. _; ?$ E- r/ D9 e l2 n
an identified conductor; however, in the case of those flexible cords where the identified conductor is
. s$ A. H+ t8 Kidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.' A9 N) ]4 G; {; x8 i3 b* }
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked
) H! V& s/ T/ n) x$ X0 z2 ]& P7 has the identified conductor by painting or other suitable means at every point where the separate
9 O7 g" L1 N0 vconductors have been rendered accessible and visible by removal of the outer covering of the cable, and4 e) P9 a& d$ m8 w, W$ z1 ]2 [
the painting or other suitable means of marking the identified conductor shall not be permitted to render5 H; r; `# C) p
illegible the manufacturer’s numbering of the conductor. |
|