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

8 U9 [/ q# V9 |! FThe question is unclear?
Firstly, the equipment or circuit is energized or not ?
5 {4 [; H9 N/ n' WIf 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?
( K% [6 G  d' C8 _3 E. 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…. ...
$ i; m4 {$ x3 [5 @, u7 cjack_lai 发表于 2010-2-15 22:24

# E9 k: v) P- _) N/ C2 \! s2 V“Firstly, the equipment or circuit is energized or not ?”------打得对：）