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How many amp breaker do I need for a hot water heater 2024?
125
4500/240 18.75 amps
Questioner:Sophia Patel 2023-04-20 16:53:05
The most authoritative answer in 2024
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Amelia Gonzales——Studied at the University of Cape Town, Lives in Cape Town, South Africa.
A water heater of this type is required to be considered a continuous load meaning that the branch circuit needs to be calculated at
125% of the heater's rated ampacity.
4500/240 =
18.75 amps, will work on a
20 amp OCPD but, 18.75*
125% =
23.4 amps, requires a 25 or
30 amp circuit.
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