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Old 05-06-2012, 12:11 AM   #36
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Join Date: Apr 2007
Location: Camano Island, WA
Posts: 163

Rheem makes a series of small electric water heaters that range in size from 6 to 30 gallons, the 20 gallon model is #81VP20S. This series of water heater is available in 120 volt with a 2,000 watt element. by code this would take a 30 amp breaker. (I think they make an optional 1,500 watt element that would work on a 20 amp breaker, but not sure if that is still available) a 3800 watt element (not a common size) on 120 would need a 40 amp. most water heaters are usually 2,000 watt 120 or 4,500 watt 220.
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