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depends what the source voltage is

one horsepower equals to 746watts (assuming 100% efficiency)

746 watts divided by voltage source equals current (amps)

Answer

In countries, such as the USA, where the horsepower is still used as a means of measuring power, it is always used to measure the output power of a motor.

So, in order to determine the current drawn by the motor, you will first need to find out its input power. The input power is the output power divided by the machine's efficiency. Once you know its input power, then you can find its current by dividing the input power by the supply voltage. In practise, you will need to use a wattmeter to determine its input power.

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