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如果套管厚度没有1.0 mm厚,能满足23.3 ??0 j3 x' Q% V7 `) r5 J4 q; z
23.3 Different parts of an appliance that can move relative to each other in normal use or( J: ~3 [1 Z+ y+ y8 q* U
during user maintenance shall not cause undue stress to electrical connections and internal6 _: T! N2 {0 `
conductors, including those providing earthing continuity. Flexible metallic tubes shall not
: i" ]9 i7 v5 G$ Rcause damage to the insulation of the conductors contained within them. Open-coil springs
4 M+ {: `$ ]- D \shall not be used to protect the wiring. If a coiled spring, the turns of which touch one another,
) B8 u) g |( x, ^1 I' |is used for this purpose, there shall be an adequate insulating lining in addition to the* g0 a, }. x' D* s+ Y
insulation of the conductors. |
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