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

+ r3 L* [4 N# O8 l5 e9 a/ ?The question is unclear?
' L" b$ y$ f- Z- j$ X0 A- nFirstly, 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 ?
" ^! O' @; J  w3 e4 @( mIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
5 h! |' ~+ u# f) P. H7 j/ J+ d% P8 [jack_lai 发表于 2010-2-15 22:24

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