d1c6e4c3_Safety_Tips__DO_S
[S.No.] 2. [DON'TS] Don't touch or tamper with any electrical gear or conductor. Unless you have made sure it is Dead and Earthed. High voltage apparatus may give leakage shock or flash over even without touching [DO'S] 
Ensure that all the controlling switches are opened and locked or the fuse withdrawn before working on any circuit or apparatus.
Safety Tips
DO'S