看你的电工基础知识牢固吗？(4)

homestay

What is the first thing you need to do and need to know before working on an electrical cuicuit/equipment?

jack_lai

+ H6 P( ?0 C( k" S
The question is unclear?
Firstly, the equipment or circuit is energized or not ?
If yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. You have turned the power off for this equipment or circut. After that , you can do what you want to do.

Allan2008

是否带电是很重要的。

homestay

The question is unclear?
$ i% T; \6 P. J" X: s! r7 {Firstly, the equipment or circuit is energized or not ?
& F4 `4 O0 m1 ZIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
$ j8 r) B! c8 v, _jack_lai 发表于 2010-2-15 22:24

“Firstly, the equipment or circuit is energized or not ?”------打得对：）