what size breaker to use on a 220 54 amp tankless water heater

I have a 22054 amp Rheem tankless water heater ecosense
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I have a 22054 amp Rheem tankless water heater ecosense
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On Fri, 23 Mar 2018 15:44:02 GMT, Terry Manahan
When in doubt, look at the manufacturers instruction but it looks like a 70a breaker to me ... on 4ga copper wire..
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Duh!!! The answer is in your question. It's a 54 amp heater so you need a 54 amp breaker. DUH!!! (rated at 220V). How hard was that?
When God was handing out brains, you thought he said Trains and you took a train to the border, and never got a brain.
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