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How many 12 volt batteries to run a 1.5 horsepower water pump for 1 hour?
Wiki User
∙ 11y ago
1 hp is 746 watts but you have to allow extra for losses. So for 1.5 hp you need about 1400 watts to be supplied, which at 12 v is a current of 117 amps.
A car battery is about 40 amp-hours therefore 3 batteries would be needed, connected in parallel, 4 to be sure. Also needed is an inverter to convert 12 v to the voltage of the pump motor, and AC 50/60 Hz if that is what it needs.
Wiki User
∙ 11y ago
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