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楼主 |
发表于 2013-10-10 17:38
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地瓜 发表于 2013-10-10 15:50 
" I# m% {% S2 b7 c0 {) }8.1.3写的是针对 live parts of visibly glowing heating elements···也就是说只有在这类元件才用prob ...
/ {9 ]; Y8 [3 \除了live parts of visibly glowing heating elements·外,还有live parts of all poles of which can be disconnected by a single switching action.( v# q$ |7 n' e) D, d$ D
NOTE For appliances provided with a supply cord and without a switching device in their supply circuit, the withdrawal of the plug from a socket-outlet is considered to be a single switching action. |
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