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 E0 @7 a8 ^( V2 U
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?
& P3 W0 N" L- w: r, o! _Firstly, the equipment or circuit is energized or not ?
# J4 R; b; u0 t% OIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
3 o; q' Q1 x7 j& C  Djack_lai 发表于 2010-2-15 22:24

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