Summary: Learn how to shut off a circuit breaker to replace a socket or light switch in this free online do it yourself home improvement video on basic electrical work.
Danny Herb is a professional electrician in the Los Angeles area who works in both residential and commercial fields.read more
"Alright now, this apartment complex is actually really old. So it only has 2 breakers for every little unit and my unit is this one right here 3 quarters and it only has these 2-20 amp breakers. So, this is all I really have to do; that's it. This is the main breaker that feeds all these services in through here. These are each 20 amp circuits which don't hold a lot of power. So these apartment complexes trip this breaker a lot, especially when I turn my air conditioner on and I have my microwave going and then I try and vacuum. So anyway this is what I'm forced to deal with and it makes it easy to turn power off which is a good thing when you're working on plugs and replacing switches and things like that. Now we'll back inside and work on that plug."
eHow Article: How to Shut Off a Circuit Breaker