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你可以参考UL62:
6 I9 u) ^# u( Y3 I( y- j4.1.9.1 Conductors shall be distinguished as follows:
* E9 ^( i) H2 j1 ]3 a C3 o* L- O(a) Grounded (neutral) conductors shall be distinguished by one of the following methods, and
) V5 O1 W% ?4 b6 C% W: |these colours shall be restricted to such use:
" z9 X1 S) ?0 I( b9 C1 K(i) white or grey coloured braid;
2 \. c' m# B7 f8 {1 k- H& _(ii) white or grey coloured insulation; for jacketed cords furnished with appliances, one
- R- q" v: A4 N' m m, a2 J Hconductor may be light blue with the other conductors readily distinguishable from white z M! T% E3 C, J, {/ r
or grey;4 W7 w3 ~8 E4 `0 F
(iii) white or grey coloured separator in integral constructions only;
, K' z2 m; ^' r* f3 |/ S(iv) tinned conductor on integral constructions only; or
0 z; C `- k0 T/ Y$ `* [(v) one or more grooves, ridges, or white stripes on the exterior of integral2 Y- ~# s5 M @. Y0 V
constructions only.
0 d- x6 m7 p3 X/ {2 Z( ](b) Grounding conductors shall be distinguished by the colour green or a combination of the
8 e9 w T+ t# L6 V) K2 ecolours green and yellow. On a grounding conductor coloured green, one or more yellow stripes Q/ n5 e& O- t f: r/ n% u
that cover no less than 5% and not more than 70% of the calculated circumference of the6 n9 ?- y0 Q3 n6 ?4 R7 _* s' u
finished conductor insulation shall be permitted. |
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