Step up voltage from generator?

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  #1  
Old 09-12-12, 11:24 AM
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Step up voltage from generator?

Hi,

This is my first post and this is something I have been thinking about for a while now. Basically I want to know if it is possible to step up the voltage of my honda generator 3000 watt inverter (120 volt, 15 amp circuit) to 240 volts in order to run my submersible well pump when I lose house electricity? I know it may not be practical with the generator I have but I am interested in knowing if it can be done.

Thanks,

Glenn
 
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  #2  
Old 09-12-12, 11:40 AM
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What is the current draw of the well pump? Is the pump fed from a VFD or no?
 
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Old 09-12-12, 12:03 PM
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I don't have the details in front of me now but I can say that the pump does not have a VFD and it is a 0.5 HP motor. If my math is right that should mean that at 240 volts the pump will draw less than 2 amps while running. Conversely, if i step up my generator output to 240 I will only have about 7.5 amps available. As long as the cut-in demand does not get too high, would it work?
 
  #4  
Old 09-12-12, 04:43 PM
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Ray, its the amps that get halved, not the watts. If the transformer is 95% efficient then you should have around 2850 watts to handle a roughly a 400 watt load.
 
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Old 09-12-12, 04:49 PM
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Dang, thanks Auger. Must have been out to lunch when I wrote that. I am deleting my posts.
 
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Old 09-12-12, 04:57 PM
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Thanks guys. Any idea where I could purchase a transformer for this purpose?
 
  #7  
Old 09-12-12, 06:18 PM
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Most electrical suppliers should carry one.
 
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