You can convert a 1 hp motor operating with 12 V to amps by considering the following steps:
Multiply 1 hp by 746 to transform it in watts: 1 × 746 = 746.
Divide the result by the voltage: 746/12 = 62.17.
Divide the result by the efficiency. Usually, a 12 V DC motor works with 55% efficiency: 62.17/0.55 = 113.03 amps.
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