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

! J3 L7 {7 d9 }% f; \
2 B# k) Z8 p0 u# }/ ~) H9 Z: KThe question is unclear?
3 `$ B4 _5 L3 V+ s- L$ MFirstly, 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?
, F7 \' D  D, A0 z) w- Y0 \Firstly, the equipment or circuit is energized or not ?
( _( N1 J$ K: [. pIf yes. You have to get the permit to shut down the power.  After you get the permit … fill a form sing the paper…. ...
" Q  D/ \9 x" j' E2 n3 E  Sjack_lai 发表于 2010-2-15 22:24

! ^* i6 x; x/ I" W  _& b) \) `“Firstly, the equipment or circuit is energized or not ?”------打得对：）