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

( V7 H. {; _* b4 q2 B4 ?
9 m4 U6 A6 y# V- @" AThe question is unclear?
! n* N( Z3 _) ~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…. 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…. ...
4 _6 V5 E9 t. M0 L9 rjack_lai 发表于 2010-2-15 22:24

8 O# W/ n, A" q. c“Firstly, the equipment or circuit is energized or not ?”------打得对：）