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你可以参考UL62：
6 D4 ]3 u& Z# p: K4.1.9.1 Conductors shall be distinguished as follows:
4 Y/ v7 f- C9 ]. D6 t3 H6 A) v(a) Grounded (neutral) conductors shall be distinguished by one of the following methods, and
3 h, |/ U5 b5 wthese colours shall be restricted to such use:
1 H: M7 W& O* E# S6 d$ ]0 x0 t(i) white or grey coloured braid;
, g _) m3 ?7 k& W(ii) white or grey coloured insulation; for jacketed cords furnished with appliances, one
2 t+ d0 u! C( N/ ^- Tconductor may be light blue with the other conductors readily distinguishable from white, w( v* _2 S+ \8 A7 W, ~: M& g, u. N
or grey;
f6 p; U; `5 S0 M7 H0 ~(iii) white or grey coloured separator in integral constructions only;
5 u1 }3 j8 P. s3 y4 P0 c(iv) tinned conductor on integral constructions only; or" {$ v2 g. \: b
(v) one or more grooves, ridges, or white stripes on the exterior of integral
7 T9 @9 H8 B/ W2 R L9 Econstructions only.
9 d+ j/ q; x I w(b) Grounding conductors shall be distinguished by the colour green or a combination of the2 j% y- i, t7 l; j
colours green and yellow. On a grounding conductor coloured green, one or more yellow stripes/ J4 D' m0 B7 x# S# P/ j
that cover no less than 5% and not more than 70% of the calculated circumference of the: r; t. J; E: u9 Y7 Y' U, r
finished conductor insulation shall be permitted. |
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