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

+ a" A8 C7 _" \% w- ]1 k
The question is unclear?
+ o0 [7 r- S9 @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?
Firstly, the equipment or circuit is energized or not ?
' i# F; @8 H! ]5 ^, K$ E3 k4 VIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
3 [. ]  L5 ]3 ~: ?9 W+ t/ Kjack_lai 发表于 2010-2-15 22:24

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