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The electrical code book states that a single phase 3 HP motor at 230 volts draws 17 amps. This equates to 3910 watts. Allowing for starting inrush current a 5000 watt generator will run the motor but the generator will labor a bit until the motor gets up to speed. Generators with a higher wattage rating would have less trouble with the starting of the 3 horse power motor.
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One hp is 746 watts. 3*746=2238. It takes 3 to 6 times as much energy to start as it does to run.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoA 6 kVA generator could supply a 6 HP compressor motor.
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