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

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, N& J' k! l/ k. u" {, Z+ P" ]The question is unclear?
Firstly, the equipment or circuit is energized or not ?
! {) S  S' t3 g# H7 m0 I# \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…. ...
, V4 s8 q, [* ]jack_lai 发表于 2010-2-15 22:24

" K) ~4 b2 L. S. d5 `6 ?) U7 X“Firstly, the equipment or circuit is energized or not ?”------打得对：）