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In the panel box (if there are circuit breakers) The top breaker or main should have a number on it like 100 or 150 or 200. This is the total amperage of the electric service in your house.

I'm lucky, I see 300 on panel box but that's not enough. I sacrificed one bar for a one 120v for a outlet for my at&t. I need more amp slots for my house for a Nissan LEAF and save our troops.

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Q: How do you know the amperage rating of your house?

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