 鲜花( 0)  鸡蛋( 0)
|
this is what code says:
8 T0 D; D% b9 |4-028: Identification of insulated neutral conductors up to and including No. 2 AWG5 O- b. Z8 v' F# u; q
copper or aluminum4 B5 c0 e3 j( u5 n* K+ O
(1) Except as permitted in Subrules (2), (3), and (4), all insulated neutral conductors up to and including
' ? y/ t# P, T& `4 u3 CNo. 2 AWG copper or aluminum, and the conductors of flexible cords that are permanently connected to
+ e& G4 ^+ v9 K( j7 l1 }9 osuch neutral conductors, shall be identified by a white or grey covering or by three continuous white stripes
, j2 ~. G; v7 d4 q" q$ Salong the entire length of the conductor.( N, m3 S9 R5 B! S5 l; G& B' U
(2) Where conductors of different systems are installed in the same raceway, box, or other type of enclosure, @+ x% j5 @9 c1 B" p2 s. m1 U
and the identified circuit conductor of one system is coloured by a white or grey covering, each identified
3 {* ]0 I' j. s. q8 Gcircuit conductor of the other system, if present, shall be provided with a specific identification, and the; ^* v" `* T/ e* p
identification shall be permitted to be an outer covering of white with an identifiable coloured stripe (not
: W2 \+ m+ Q. Q' B1 Egreen) running along the insulation.* Q; q6 S3 V6 Y, o
(3) The covering of the other conductor or conductors shall show a continuous colour contrasting that of( p3 \$ V2 x! O2 F( Y
an identified conductor; however, in the case of those flexible cords where the identified conductor is
. q* P; h( C9 _9 C; pidentified by a raised longitudinal ridge(s), the other conductors shall have no ridges.
' a! ]" l1 q0 N# Y" V0 [" D; O! N(4) For multi-conductor cable, the insulated neutral conductor shall be permitted to be permanently marked: @( l( T! [5 [% _) }$ H& Y3 P; x
as the identified conductor by painting or other suitable means at every point where the separate' v% j9 b- ]( s; |( H# f; s- n
conductors have been rendered accessible and visible by removal of the outer covering of the cable, and
& T" O6 H; _) gthe painting or other suitable means of marking the identified conductor shall not be permitted to render
& E: ? |+ f' x; j1 Millegible the manufacturer’s numbering of the conductor. |
|