What size circuit breaker for residential water heater?


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Old 02-25-16, 09:58 AM
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What size circuit breaker for residential water heater?

40 gallon electric water heater. Dual 4500 watts. What's the correct size wire and circuit breaker?
 
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Old 02-25-16, 10:29 AM
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#10-2/g cable and 30A double pole breaker. Some jurisdictions require a disconnect at the unit (air conditioner pull-out style is OK). Some jurisdictions require that the connection from the wall/ceiling to the unit be protected -- flex conduit or metal cable for example.
 
 

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