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

% t, Y  f. d( X8 ?
0 k, P  E/ S" ^# H" x% {. h" F+ W, WThe question is unclear?
% W$ X; |% _* q: i! XFirstly, the equipment or circuit is energized or not ?
7 I( D$ g/ h5 ^; p. R8 [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 ?
If yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
' i7 n9 G* ~4 L* J- L4 f3 W2 i/ @jack_lai 发表于 2010-2-15 22:24

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