Re: pump power rating versus electricity consumption

Originally Posted by
mas985
It depends on your service factor as well. Most high efficiency pumps have fairly high service factor of 1.6 or greater which makes the braking HP (true HP) higher. For a 3/4 HP pump, that is about 1.2 braking HP with a service factor of 1.6. BHP to energy use is about 75%-85% efficiency:
Kw = BHP * .746 / .75 = 1.2 kw
So what you are reading is reasonable.
You are indeed correct. The service factor on my pump is 1.67.
30'x16' (irregular) indoor gunite/plaster pool, 10k gal,
Autopilot DLG-220 with SC-48 cell, 3/4 HP recirc pump,
solar panels, heat exchanger from 200 kBTU/hour Viessmann boiler
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