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你可以参考UL62：
^/ P% ~9 R+ m- Q: N4.1.9.1 Conductors shall be distinguished as follows:: G* a9 y# @. J0 y; K* f
(a) Grounded (neutral) conductors shall be distinguished by one of the following methods, and
: K+ ?6 @! K$ Cthese colours shall be restricted to such use:
% h4 Q8 k5 s q+ L5 Q$ P+ b(i) white or grey coloured braid;
: x$ }: h3 S2 _(ii) white or grey coloured insulation; for jacketed cords furnished with appliances, one7 G8 Y6 w, `8 L) u# L
conductor may be light blue with the other conductors readily distinguishable from white
5 a1 s& t! Z. P" r$ lor grey;5 K( q* W$ v; C) E6 R& w3 i
(iii) white or grey coloured separator in integral constructions only;1 \$ c2 c9 k- Q6 }& V
(iv) tinned conductor on integral constructions only; or3 l" b [- c* e2 x
(v) one or more grooves, ridges, or white stripes on the exterior of integral0 A) b& c, S C" T. Y+ k* r; h7 l2 C
constructions only.8 B2 B7 o7 K0 C8 [2 o# W
(b) Grounding conductors shall be distinguished by the colour green or a combination of the" m" g1 O5 x0 E9 g! _1 I& v# n
colours green and yellow. On a grounding conductor coloured green, one or more yellow stripes5 z9 | H, p5 s. ^- x) c" h
that cover no less than 5% and not more than 70% of the calculated circumference of the
' U/ ~* O) N+ {) R7 W5 J! ?0 tfinished conductor insulation shall be permitted. |
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