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?
Firstly, the equipment or circuit is energized or not ?
" M. [6 @/ c; M$ |8 uIf 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?
5 u* Y& B. p) s. oFirstly, the equipment or circuit is energized or not ?
, D) R( _* m( C' e$ p9 uIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
; a% R, h8 S6 qjack_lai 发表于 2010-2-15 22:24

6 R4 d5 @$ U8 N“Firstly, the equipment or circuit is energized or not ?”------打得对：）