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

9 v/ v+ e" u# f5 p9 y, g7 ~* ^1 W
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?
Firstly, the equipment or circuit is energized or not ?
2 i9 E9 G  `, l$ e1 ?* a8 w$ D% dIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
# a' q5 |, h5 w5 P2 Z  k( @, V+ Djack_lai 发表于 2010-2-15 22:24

& N# T# {5 i& ^“Firstly, the equipment or circuit is energized or not ?”------打得对：）