|
地瓜 发表于 2013-10-10 15:50 & t) b* v& {* M5 f0 U5 j$ x
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 ... + n4 V% U. r ?$ x3 o8 T
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.
1 x ~: h3 I, c1 c( r* H. MNOTE 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. |
|