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

& W1 z& S  X6 M  y& t
The question is unclear?
Firstly, the equipment or circuit is energized or not ?
1 t5 y6 R' M0 X5 Z; bIf 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 ?
5 f! z" u4 g* g- L0 V8 h( h" LIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
$ M) m7 u' E2 O" W9 yjack_lai 发表于 2010-2-15 22:24

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