Will I overload this circuit?
On one 15 amp wire (one 15 amp circuit) there are the following 9 items:
1) Back Door outside Light (one bulb, 75 watt)
2) Light fixture above Washer and Dryer (two 75 watt bulbs)
3) Light in Garage (one 100 watt bulb)
4) Lights for automatic Garage Door Opener (two 60 watt bulbs)
5) Automatic Garage Door Opener (unknown wattage)
6) Two outlets in the garage (sometimes used, for example, to vacuum car)
7) Garage roof Attic Fan (unknown wattage)
8) Two light fixtures on the outside of the garage door (one on either side) (two 60 watt bulbs)
9) One outdoor motion light fixture with two 100 watt bulbs.
Here is my question. There are currently 9 items shown above. I want to add another item so the future total will be 10 items. This is what I want to add : I want to add ANOTHER outdoor automatic motion light with two 100 watt bulbs. Will I be overloading this 15 amp circuit?
Thank you.
Answers:
I believe it is ok to add your 200 watts of power. However, you need to determine the wattage or amperage of the garage roof attic fan. It typically doesn't get hot enough here in Montana for these so, I'm not sure how much power they use.
All of your current lights are using 765 watts of power. If you divide that by 120 volts you get 6.375 amps. Adding the additional 200 wats of lighting only increases your load by another 1.67 amps.
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