A few channels to have a look at:
John Ward (Who posts here as
@flameport )
David Savery (Knows what he is talking about, even if he does go on a bit and gets sweary and sarcastic)
Nick Bundy (Domestic chap who talks a lot about the practicalites of the job)
Residual current/Mike page (Youngish chap who does a fair bit of industrial)