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

The question is unclear?
" D; ~/ {$ e6 I: _4 vFirstly, the equipment or circuit is energized or not ?
2 o+ I+ X  z- V( g$ sIf 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?
+ H6 P  F' I# ^1 O* i3 ?Firstly, the equipment or circuit is energized or not ?
+ v! V$ j6 C+ R: I; z" yIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
- |! a9 U  L/ A; B  x. r* ~jack_lai 发表于 2010-2-15 22:24

7 g) M" V0 e$ }/ y* R+ L“Firstly, the equipment or circuit is energized or not ?”------打得对：）