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Power equals volts times amperes. So you have to look at your fuse, e.g. 30 amps and calculate: 120 volts times 30 amps equals 3600 watts. Scroll down to related links and look at "Calculator"

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15y ago
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14y ago

Watts = Volts x Amps Hence if the outlet was protected by a 15 Amp breaker then the theoretical maximum watts would be 1800 watts or 1.8 KW. However, it is recommended that load doesn't exceed 80% of capacity, so the answer for a 15 Amp service is 1.44 KW. If it is a 20 A circuit you can now do the math.

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13y ago

Multiply its power, in kilowatts, (i.e. 120/1000) by the length of time it is in use, in hours. This will tell you how much energy it has used, in kilowatt hours.

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14y ago

You only have half the data to go on. Watts is a total power consumption. It's a fomula that needs voltage and amperage to be determined.

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12y ago

On a 12-volt system, ten amps. On a 120-volt system, one amp. On a 240-volt system, half an amp. You just multiply the volts by the amps to find the watts, for a simple thing like a bulb.

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Anonymous

Lvl 1
3y ago

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Q: How many watts can you plug into a 120 volt outlet?
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