motor for belt grinder question

D

DHackney

Joined
Jul 12, 2004
Messages
178
Greetings folks,

I am trying to buy a 2hp motor in preparation for my future KMG grinder :D .
My question is: I found a 2HP, 1phase, farm duty, 115/220V, TEFC, Baldor motor on eBay for a great price. I am an electrically challenged individual and was wonderin if this would work, not only for the KMG but for plugging into a regular 110 socket.

Many thanks,
Dana Hackney
Monument, CO
 
Hi Leo,

Thanks very much for the information. I'll hop on ebay and place my order.

Dana

P.S. I really like your post script message!
 
It should work fine, just be sure to wire it for 115VAC and not 220. Also, check your wiring to make sure it can handle the amperage the motor will draw. Most home wiring is 14 AWG rated for 15 A, and I'm sure your 2 HP motor exceeds that.
 
thanks for the heads up. I went back and looked at amp rating and it says :
F.L Amps - 14/28, so I am assuming it means if it's wired for 110V then it draws 14amps. Is this correct?

Thanks again, guys,
Dana
 
harbor frieght has some motors under 100 bucks.
i'm not sure if they're good for anything
chicago electric.
motors from 1/2HP to 5HP
faster and slower ones. different volts
all kinds of stuff. p 37 in the new catalog
 
DHackney said:
thanks for the heads up. I went back and looked at amp rating and it says :
F.L Amps - 14/28, so I am assuming it means if it's wired for 110V then it draws 14amps. Is this correct?

Thanks again, guys,
Dana
Click to expand...
In motors the low volts pulls the higher amps. Higher volts pulls the lower amps. This allows the motor to have the same output on two different voltages. 28 is the one to wire for at 110 volts.
mike
 
The 14/28 amps is essentially a momentary spike it will draw at startup...some wiring will tolerate this, but one should have a slow-blow breaker in the circuit box to tolerate that type of current draw momentarily on a 15A/110V circuit.

Wiring for 220V is definitely preferable, but another option would be to up the wire guage on that circuit and switch to a 20A breaker. If your shop lighting or much of anything else is running concurrently on the same circuit, you will have even more problems.

After the current spike at start, the current load will drop appreciably, but rise again the more strain put on the motor; ie, the harder you grind, the more current you will draw. All that current draw will heat the wiring up in the circuit, too, creating a potential fire hazard.

My opinion would be that unless you have a new house with beefy wiring, a 2HP motor run at 110V is going to be sending you to the breaker box frequently to reset. That's A LOT of motor for a 15amp circuit.
 
Another problem could arise if you had a fire(of course that in itself is a major problem), starting in the circuit that motor was running on. Any insurance adjuster could weasel his company out of paying by blaming you for overloading the amperage rating of the circuit, and he'd be justified in doing so.!:eek:
 
Sheeeesssshhhh! I am glad this site exists, and that there are so many helpful folks out there! I'd probably just plugged the thing in and gone on my "merry :confused: " way.
I think I'll have a 220 breaker installed and go for the 220 wiring option.

Many thanks guys.

DHackney
 
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