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It depends on the rating of the furnace. There should be a plate or sticker somewhere on the furnace that shows the rating. If you are just powering a blower motor the rating will be lower than if you have an electric heating element.

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13y ago

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What size breaker for furnace?

The size of the breaker for a furnace will depend on the specific requirements of the furnace unit. It is recommended to check the furnace's user manual or consult with a qualified electrician to determine the correct breaker size for your particular furnace model. Using the wrong size breaker can be a safety hazard.


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