January 23rd, 2012 
Nate Volt Eletric
Ok, if I have a 1000 watt eletric motor, can it equaly generate 1000 watts if I spin it manually myself?
For example when the motor is used “normally” its powered by a battery (48 Volts). It makes 1000 watts at 3000rpm. Can i (disconnecting the battery of coarse) manually spin the electric motor to 3000rpm, to generate 1000 watts.
Yes, but it depends on the motor. If it is a permanent magnet motor, yes. If it has a separate field winding, you may need to provide a current for the field to get the process started. Once it is generating voltage, it can provide its own field power.
When you say “manually spin the motor to 3000rpm” I assume you plan to do this by some means other than your hands. You will need to apply somewhat more than 1000 W of mechanical power to get 1000 W of electrical power out because of inefficiencies in the motor. It is quite challenging for a person to sustain 1000 W of mechanical power output.
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