KMG going from 110-220v

N

NickBoyle

Joined
Oct 9, 2015
Messages
205
Like the title says, I bought my KMG with the 1 1/2hp motor. When I got it I only had 110v available at the time. I wired it up for 110v with the switch kit that came with the grinder and the instructions. I know this motor can be ran on 220 but I'm not sure how to rewire it. I'm no electrician but I'm no dummy either. I ran a 30amp circuit for my Evenheat and wanted to use this to also run my grinder. I won't be running both at the same time. Can anyone tell me what I need to do? There's a pic on the motor I can post if needed. Thanks guys
 
NickBoyle said:
Like the title says, I bought my KMG with the 1 1/2hp motor. When I got it I only had 110v available at the time. I wired it up for 110v with the switch kit that came with the grinder and the instructions. I know this motor can be ran on 220 but I'm not sure how to rewire it. I'm no electrician but I'm no dummy either. I ran a 30amp circuit for my Evenheat and wanted to use this to also run my grinder. I won't be running both at the same time. Can anyone tell me what I need to do? There's a pic on the motor I can post if needed. Thanks guys
Click to expand...

Of course.

That's always the answer to these types of questions.

No VFD ?
 
Use the cover plate diagram and connect the HV leads as indicated.

IIRC - yellow with black stripe to line 1, jumper together blue/red/brown, black/yellow to line 2. Ground to motor frame. They are numbered 1-6 on most motors. Not all terminals are used. To reverse motor, switch two of the wires as directed.
 
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Beware. Colors can be different, so what worked for Stacy, may not be the case for your motor. Go off of the diagram on the motor. it should look something like the pic below. Notice that my wire colors are different than what Stacy describes.

View attachment 606491
 
You will have two hots (we'll call them black and red) and a ground coming from your 220v power supply. What we call 'black', Leeson is calling 'L1'. What we call 'red', Leeson is calling 'L2' (L for 'Line'). Or vice-versa - shouldn't matter.

P1, P2, T3, T8, T2, T4, and T5 are all contacts inside the motor wiring box. They should be labelled.

So you connect L1 to P1 (with a wire nut). You leave P2 alone (cover the exposed wire with a wire nut). You connect T3, T8, and T2 together (with a wire nut). You connect L2, T4, and T5 together (with a wire nut). Ground is hopefully self-explanatory - if not, then this is probably beyond your skill.
 
Not much to add to Patrick's post. The nameplate lays it out for you, and being a newer motor, the labels on the leads should be quite clear. Just make sure your connections are tight, the proper sized wire nuts are used, and I'd go ahead and wrap some quality electrical tape around the wire nuts and wires (wrap in the direction that the nut tightens) just to keep everything together. The leads should be properly stripped already, but when the nut is tight, no copper should be exposed. The tape is to keep the nut from backing off, not to cover the copper.

Do make sure you have a good bond on your chassis ground. You don't want to find out the hard way that it's wrong.
 
Got it all hooked up. Actually had to switch to wires to get it spinning the right way. Thanks for the help guys! Never knew how much powerful 220 would make this thing!
 
It should be identically powerful on 220 as it was on 110. The speed and wattage remains the same.
 
I had a fair amount of things running off the 110v outlet which I think caused it to lose some juice. Cause it's definitely kickin more ass now then it did before!
 
I have the same motor running off a VFD, powerful and quiet! You should have picked up a half horse with the switch to 220, at least that's what my information was. Enjoy the new horsepower!
 
You can't be running that same motor on a VFD, because his motor is single phase. A VFD and a 3 phase motor is a different thing.
 
NickBoyle said:
I had a fair amount of things running off the 110v outlet which I think caused it to lose some juice. Cause it's definitely kickin more ass now then it did before!
Click to expand...

No doubt, Voltage drop due to higher amperage on the 120V circuit is the culprit.
If possible, always run motors at highest voltage they are designed for.
 
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