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

/ @  |- s* ~( sThe question is unclear?
Firstly, the equipment or circuit is energized or not ?
: h1 q6 s  v' k8 |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?
+ q, r. e3 [! V3 k0 U- X9 j( A/ C) UFirstly, 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…. ...
jack_lai 发表于 2010-2-15 22:24

  d  }) {5 p9 K! u0 Y/ g“Firstly, the equipment or circuit is energized or not ?”------打得对：）