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Depends on the size of the water heater. An average residential water heater will require the use of AWG #10/2 with ground wire on a 240 volt double pole 30 amp breaker.

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โˆ™ 2014-03-12 20:53:27
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Q: What amp breaker do i need for a water heater?
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Can you put a 20amp water pump and a 30 amp water heater on a 50amp breaker?

No, they each need their own breaker of the right amp. Neither of them would cause the breaker to trip if there was a problem.

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30 amp breaker

What size circuit breaker for a 50 gallon hot water heater?

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What size breaker do you use for a water heater?

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How is a hot water heater wired from the power source to the heater?

10/3 wire with 30 amp double pole breaker from panel box to water heater.

What size amp circuit breaker should be used for a hot water tank?

Assuming you are referring to a 240 volt residential hot water heater you will need to install 10/2 NM cable (Romex) with ground from the service panel to the water heater wired to a 30 amp circuit breaker in the service panel. If you cannot see the water heater from the service panel you will need to install a service disconnect at the water heater.

You are putting in a 240 volt 4000 watt heater in a room what size breaker do you need?

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