 鲜花( 0)  鸡蛋( 0)
|
this is what code says:
* H& }" s* l" V' w4-028: Identification of insulated neutral conductors up to and including No. 2 AWG. }# c T, S$ D% |' X, D' ~# c
copper or aluminum
. q: u! O3 k! ^/ H+ w8 |0 p(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including1 Z1 D1 K; \) K+ o0 [( p1 ?- o
No. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to! H7 v. a% \3 B' S1 i- n
such neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
6 M y3 R& @, e) n7 Aalong the entire length of the conductor.
! B4 w# a: g6 o1 ?/ [& h(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure1 o9 D1 | f4 n( k$ [; z* W
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
" }( ?6 e* H9 v' g- F! U. n; Dcircuit conductor of the other system, if present, shall be provided with a specific identification, and the
}, f- r* }2 [4 Tidentification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
1 }' p/ n: t1 U( G& [* Rgreen) running along the insulation.
9 Z8 M7 A2 s# c; s' M* m(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of
7 r, D2 H# I, v) k uan identified conductor; however, in the case of those flexible cords where the identified conductor is2 V: m3 L' n1 f1 y- p7 Y) |% k4 O. J
identified by a raised longitudinal ridge(s), the other conductors shall have no ridges.: T! ^ g! J! _% o' q
(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked9 V" l5 n! P$ n. ?9 ~8 U
as the identified conductor by painting or other suitable means at every point where the separate1 O6 t% C q+ n- @' `# l
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and) W; k3 A9 p7 M$ I6 ~2 w
the painting or other suitable means of marking the identified conductor shall not be permitted to render
8 g& T- [4 G( p' J& R; Q3 K9 p7 {illegible the manufacturer’s numbering of the conductor. |
|