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你可以参考UL62：
2 M z ?- `5 P0 w; \' f$ d4.1.9.1 Conductors shall be distinguished as follows:
% @$ l3 w$ g, [' ?1 g# E4 X(a) Grounded (neutral) conductors shall be distinguished by one of the following methods, and
. o: r0 o% d' i# U: |$ s7 xthese colours shall be restricted to such use:" q. L# M9 ]1 K s* o
(i) white or grey coloured braid;
8 E, Y3 r! w, {. b1 L1 e(ii) white or grey coloured insulation; for jacketed cords furnished with appliances, one
# s7 y4 I3 V( v4 y( y1 qconductor may be light blue with the other conductors readily distinguishable from white
" M4 e" K0 p0 k5 {( V. C! @or grey;
1 i. q$ `$ r; a/ X3 K+ h* D(iii) white or grey coloured separator in integral constructions only;
L+ S. `0 U4 E: ]. Z( |(iv) tinned conductor on integral constructions only; or* i. `; d _% O" @/ T0 f( T
(v) one or more grooves, ridges, or white stripes on the exterior of integral8 l' g' Q; x! p: [
constructions only.0 v; t& v0 I+ @1 ?% Q6 n
(b) Grounding conductors shall be distinguished by the colour green or a combination of the
+ M0 K$ i3 P" Ucolours green and yellow. On a grounding conductor coloured green, one or more yellow stripes5 O; K B6 s/ ~9 v
that cover no less than 5% and not more than 70% of the calculated circumference of the* S& `! y1 \) m" y& i) o
finished conductor insulation shall be permitted. |
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发表于 2012-5-24 15:38
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