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How many watts can a GFCI handle?

The maximum power (wattage) allowed a GFCI circuit can be found by multiplying the GFCI circuit breaker connected to the electrical circuit with its rated voltage. For example, if you use a 15 amp circuit breaker in a 120 volt circuit, your maximum power allowed will be 1800 watts.

How Do I Know How Many Watts I’m Using?

Your GFCI can only handle so many watts without tripping or burning out. Make sure the electronics that are plugged into your GFCI do not exceed the maximum wattage. Check the wattage on the electrical device(s) you’re using, either on the packaging of the device or in fine print on the device itself.

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