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

. I! G3 ]* f  V, b, |6 m% H' kThe question is unclear?
Firstly, the equipment or circuit is energized or not ?
2 ]5 w5 U) n, p0 v/ U$ r  S. q3 k3 Q; {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?
3 P/ d( U. d! _, ?8 }! N* [, AFirstly, 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…. ...
" e  h5 w, o  {9 u6 sjack_lai 发表于 2010-2-15 22:24

6 e0 O$ L5 @# k“Firstly, the equipment or circuit is energized or not ?”------打得对：）