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

4 F; A! ]- i" L; ?) G
( o: S( \5 z$ R6 J$ [' YThe question is unclear?
Firstly, the equipment or circuit is energized or not ?
) Y* e% L) U; Z9 p) {$ OIf 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 ?
9 D2 l1 ~/ Y- Y. _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

9 C/ H! A! l3 f. P1 S- ?: V“Firstly, the equipment or circuit is energized or not ?”------打得对：）