I've got 11 fluorescents and three fans plugged into a system of 2 surge protectors with them all plugged in to a timer that's plugged directly into the wall plug in. No problems and no doubt it's a 15 amper. Looks like a freaking octopus hangin' in there and for sure worries me a little but I work out of my home so I'm here most of the time. If a fire starts at least I'll be here so I can piss on it. Course I might want to keep that...for my plants. ha (you probably get that little joke right 72?)

But if you go over the amps a circuit is rated for all it's going to do is heat up (a little) and kick out. That's what they're there for. Too much draw and they kick out. So if you have the breaker keep kicking, you'll know it's too much. Would only have a chance of burning your house down if the wiring was older and even then not much of a chance. Most fires are started by old fans or cords or plugs or appliances or grow lights (ha!...just had to throw that in there) that short out and throw a spark and start a fire that way.

Also of all the web sites I've been on with their forums I have never seen where someone came in there and posted a thread that was named "I BURNT MY HOUSE DOWN SO BE CAREFUL!!!" Just doesn't happen that often.
Marc Benson Reviewed by Marc Benson on . Electricity, Current, Overloade circuit I have a S51 400 Watt ballast. It says it current is 4.0. So this telling me that the ballast is 480Watts/120Volts=4.0 AMP Current. I needed an extentions cord that was rated at 15AMP and is 12 Gauge Now I also have 5 2-40 Watt Flourescent fixtures in there for a total of 400 Watts.. So I am assuming that is a current of 400Watts/120volts/3.3 AMP (Am I doing this math right). The fixture has nothing on it to tell me the current. So I am now at what 4.0 + 3.3 = 7.3 and the circuit it is Rating: 5