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 @8 Z) Z5 P0 F/ I% m
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?
" b5 [/ _: |& Y8 ~; jFirstly, the equipment or circuit is energized or not ?
: i8 h9 }3 m1 D/ i  G3 ^6 UIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
0 ^1 `8 k6 k  x9 wjack_lai 发表于 2010-2-15 22:24

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