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本帖最后由 tsunn 于 2014-1-23 14:25 编辑 % t: c: ~0 `- J- y# v3 b
2 r S) y, p AThe spacing requirements do not apply between uninsulated live parts of a wiring device, such as a lampholder or switch, and dead metal that is part of the wiring device and including mounting4 C$ h$ ]1 z! n' c F7 H/ `- [: m
screws, rivets, yoke, clamp,or similar components; 这部分是一层意思,这里并不表示接线装置有了接地才有这个规定,这里是指接线装置的带电部分和不带电部分,不适应153里的24.1的电气间隙要求。(潜台词大致是:接线装置本身有对应的标准来判定其安全要求,从这个意义上来说,接线装置必须取得相应安规认证,符合其安全要求。)
, _' ^$ i5 o/ J4 v, ^$ Y" e6 T& m or for a portable luminaire provided with a grounding means between such live parts and that part of the dead metal surface of the portable luminaire on which the device is mounted in its intended manner. 这段话读起来很费劲,难以理解。是不是这个意思:“或者对于用其固有安装方式安装于提供了接地方式的可移动灯具上的设备。”还请高人准确的表达这段文字。 |
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