The link below is very interseting reading, I don't know if anyone posted it here before but I just came across it searching for schematics for my bucket truck.

Read some of these unfortunate events, people got killed by static, plugging in toasters, working on lines. Just goes to show you, anything can happen out there.
http://www.cdc.gov/niosh/elecases.html


Dnk..

Interesting reading.

Quite a lot of electrocutions.

Good reason to wear all your P.P.E. and test, prove, test, before working on any gear and keep to your M.A.D.s.