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Re: Re-building my Ketch Tonga (1960)

How many kW is the water heater? Amperage will be Watts/Volts. The temperature rise is a function of Watts and flow rate. If your heater can run on a 30A breaker, it has to be less than 7200W. I don't know how much less, but I don't think you can run 30 amps continuously on a 30 amp breaker.

A 5.5kW heater takes 23A. If your tap water is at 10C, 5500W can give you up to 2.5 l/min at 41C

Watts x .24 / (temperature rise) x 60 / 1000 = liters/minute

Management is the art of counting beans. Leadership is the art of making every being count. --Joe Finch