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

5 Q. C8 I( n' ~" E' ?0 T6 l7 \0 J$ H- HThe question is unclear?
' K, v+ X& U, t! v) k5 pFirstly, 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?
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…. ...
1 j, V# @1 B8 K9 g' i/ ~& j% T8 l1 djack_lai 发表于 2010-2-15 22:24

5 {/ U4 z8 ~* Q  m“Firstly, the equipment or circuit is energized or not ?”------打得对：）