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The power consumption of the motor cannot be determined without more information. The power consumption of any load can be determined with any two of three interrelated parameters--voltage, current, or load impedance. (Ohm's Law)

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15y ago
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12y ago

1 hp = about 745 watts

Therefore 250HP = 745 * 250 = 186250 Watts = about 186kW

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Remember that this is the output power of the motor. Its input power will need to be greater, to allow for the machine's efficiency.

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Q: What is the watts required for a 250HP 3 phase 480 motor?
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How do you find out 3 phase motor watts?

It should me stamped on the information plate. If this is not on it, then there will be the running current stamped on the plate. Multiply this by the supply voltage to find the power in watts. Take the horsepower of the motor and multiply it by 746. There are 746 watts in 1 HP. It is also the same for single phase motors.


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