 鲜花( 0)  鸡蛋( 0)
|
this is what code says:: m3 A7 y( _; h: g& N* S4 z" r
4-028: Identification of insulated neutral conductors up to and including No. 2 AWG) { [& V) G8 Z
copper or aluminum3 H- z6 }8 M: n( O( I
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
0 I9 u5 t* S2 V! fNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to7 U% z0 d$ s. p
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
6 _+ _, v( d1 U1 C7 d. k4 j1 xalong the entire length of the conductor.; H' q8 F8 N, L' ?
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure
6 t6 v/ u, w3 [and the identified circuit conductor of one system is coloured by a white or grey covering, each identified' c9 L E& j( z; S( y' _1 x
circuit conductor of the other system, if present, shall be provided with a specific identification, and the* D' \5 p$ f. `3 H6 C
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not$ w& Q8 g; b: X$ x2 E: x
green) running along the insulation.
7 s: E% k& N3 F" T(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of7 S# ]3 s5 P4 Z" [& t
an identified conductor; however, in the case of those flexible cords where the identified conductor is# @- V" \( ~: V% {" |& P- |
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
" S7 I; }: A4 a- D1 @3 ^1 Z& d. _3 z(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked6 m' S. k, n! l8 ]* |/ m4 e
as the identified conductor by painting or other suitable means at every point where the separate. n0 x5 P7 e7 w3 W* \
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and7 }% R$ |$ O# v, @/ a* |$ n
the painting or other suitable means of marking the identified conductor shall not be permitted to render
: H- x/ v$ U. L0 N+ eillegible the manufacturer’s numbering of the conductor. |
|