In addition to the above poster. I would like to add also that most likely you are on 15 or 20 amp circuit. If you go to the box each breaker sure have that ration on there. Go back and double check all of your amp ratings on your gear. Remember you will have more amps being used on start up of a device. So make sure you stagger your starts. You don't want to be pulling more than 12 amps if on a 15 amp circuit for a safe continuous load. I also noticed that when running my exhaust fan that it would trip my breaker that the light is on after it shut off. Try running the exhaust fans from a different room via heavy duty extensions and see if that won't help ya. Good luck!