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lynd, mn | Like to make a skid to put in back of pickup. I have a 5hp compressor I took out of shop thought id make use of it. thanks |
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| A big one. Convert the 5hp to watts then add a bunch more for startup. |
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Southeast Iowa | If you run the motor on 220 volts it takes 20 amp. So 220 x 20 amps is 4400 watts for normal running. On start up a motor may take half again as much.
I would want a 7000 watt or more generator.
Gary |
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Statesville, NC | There are a lot of different 5hp motors. Some of the cheap compressors base their motor rating on stall torque, and they are really not what they say they are. If it's a full size 5hp like a 184T frame, I would guess you would need a minimum 10kw running power, not surge. |
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lynd, mn | This would be 220 volt. I see what you mean by different size motors. The motor on my unload at bin is way more motor than whats on this thing. So that being said, what would be your advise? |
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Statesville, NC | It would be best if you could try a generator before you buy. Maybe a neighbor or someone has one you could try to see what it takes to start it. With a smaller frame motor I would think you would need at least a 7000 running watts to start it. |
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Central Nebraska | IAGary - 11/29/2015 19:58 If you run the motor on 220 volts it takes 20 amp. So 220 x 20 amps is 4400 watts for normal running. On start up a motor may take half again as much. I would want a 7000 watt or more generator. Gary
I don't remember the specifics but several years ago my electrician and I were wiring up my three way disconnect during an ice storm so I could use my 8,000 watt generator for my house. The first several times we tired to put it online it stalled. I then realized that I had turned off all the big loads in the house but not the shop compressor. It was trying to run when it saw power. Flipped its breaker off and everything worked fine. I don't think my 8,000 watt could run that compressor based on that. |
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lynd, mn | good idea. thanks |
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NW Minnesota | I got a Miler Bobcat with 10,000 watt generator runs 5 horse 110 volt compressor fine. When I got the Bobcat, I could have bought a 6500 watt Honda for $25XX. The Bobcat cost $35XX with 3500 more watts and a welder. With the welder, I seem to use it enough to keep good fuel in it and big enough generator to hook up to house. We have 2 other Honda generators around here and whenever they are needed, they have to be repaired first. |
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Chanute, KS. | Ran a 1.5 hp with a 7000 watt. Sometimes it had a problem starting it, but once started would run fine. A true 5 hp on 220 volts would require 28 amps to run on 220 or 6160 watts so at a minimum I would think 20,000 watt generator. Would be cheaper to buy gas powered compressor. |
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Lenawee Co Michigan | It takes more juice to get it started than to run. If the compressor has an unloading valve it'll really help. |
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West Chazy, New York | You'll be happier in the end with a gasoline powered compressor. Sometimes the most expensive things are "free", and not just horses and puppies. |
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Chebanse, IL..... | golfnut We have a standby 20kw generator on the farm. But, I didn't want our air compressor to run w/the generator on because of what you found. So, when we installed the generator, I also had a "relay" installed on our 5 hp compressor. Now, when the line power drops off, the relay opens & the compressor won't run unless you go to the shed & engage it's relay. That way it won't overload the generator. If there has been a power "blip" or outage, you do have to remember to reset the compressor relay or you won't have air. Relay was fairly inexpensive. |
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Vermont, IL | +1. I fought 5 hp compressor for some time trying to start with my Ranger 8 (8000 watts). Sometimes it would, sometimes no. Depended on temp, whether the unloaded worked, etc. Thought the motor might have been bad, so plugged it into a 240V outlet, it started just fine. Finally bought a honda powered compressor from Northern Tool. Much more air and always starts. |
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N.W. Illinois | I would suggest purchasing a Compresserator instead. A Compresserator is a combo generator-air compressor all in one. They are manufactured by Mi-T-M (or Mighty M) and are sold and priced reasonable from John Deere.
http://www.mitm.com/air-compressor-generators/AG2-PK14-08M1/882
https://www.deere.com/en_US/products/equipment/home_and_workshop_pro... |
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What size portable generator to run 5hp air compressor?
