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 02-27-2002, 17:02 Post: 35923
warren



Join Date: Feb 2002
Location: Iowa
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 pto generator

Hi
I was wondering what horse power a 15000 watt generator would take seen one advertise at an auction.I have an 4400 deere can't recall what horse power that machine has.
Thanks
Warren






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 02-27-2002, 19:40 Post: 35928
Roger L.



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 pto generator

Be sure you are looking at PTO HP and not engine HP when you look up the power of the tractor. A common rule of thumb is to allow two tractor PTO HP for every 1000 watts of electrical power. (the actual scientific conversion says that you can get 50% more electricity out of your two hp, but you probably don't want to work your tractor that hard).
Remember that we are talking maximums here. In actual home use, a 15000 watt generator is rarely asked to put out that much constant power, so it doesn't always need full tractor hp to turn it...only when all the circuits are loaded.
More commonly you will be drawing perhaps 5000 watts, and the governor on the tractor will automatically reduce the throttle so that the engine is only working at a proportionately reduced hp rate.






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 02-28-2002, 07:07 Post: 35938
TomG

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 pto generator

Yes, and you sure don't want a generator that's so large that it's capable of lugging the engine. If the tractor governor can't sustain rpm's during peak loads, the rpm fall off which reduces the AC frequency and risks burning out electric motors.






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 02-28-2002, 21:17 Post: 35951
Peters

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 pto generator

And the answer is 30 hp on the PTO. In the future you can use the URL link below.






Link:   Specs for JD4400 

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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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