220 outlet really needed for 1.5 hp motor?

G

gshamr

Joined
Jan 18, 2002
Messages
178
I've done my homework searching these threads and want to soon buy a motor that will eventually go on a Coote. While I'm saving for a Coote, I intend to use it with a sanding disk.

Reading some posts about using AC single phase motors on my standard 115V garage outlet, I'm confused as to whether I will: lose too much torque, or harm the motor!. If I buy a 115/230 1.5 hp Dayton farm duty motor from Grainger, will I have to rewire to 220?

If so, I see an AC, single phase, 1.5 hp 110/220V Grizzly Industrial motor. Will that work? It draws 20 amps at full load so I figure I will trip my breaker all the time. I haven't heard much about Grizzly's motors, either.

Leeson has some info on their website that says you can use a 115/230 or 115/208 single phase motor on a regular outlet and not harm it, but will lose 25% of your torque.

Do I have to choose between a 1hp motor on my 115 outlet, or having to rewire to 220, if I want full power, from 1.5 horses? (or don't want to trip my breaker all of the time?)

Answers to any part of this long question will be much appreciated.

Gerry Hamrick
Snohomish, WA
 
1.5 HP is as high as you can go on 115V AFAIK. But if you get one that draws more than 15 amps at startup you may be able to rewire only for a 20 amps breaker. That is what I have for my 115V Miller Mig. 15 amps kept tripping, 20 amps is fine.

Pad
 
Get the 110/220 motor. You can hook it up 110 to start with. Then if you decide to stick with knifemaking change setup to 220. Besides if you are putting it in your garage they are usually pretty easy to add a 220 outlet to.
 
If you get a high-efficiency motor like a Leeson Wattsaver, you can run a 1.5hp on 115VAC and draw less than 15 amps.
 
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