Grounding Motor Frame
Grounding Motor Frame
(OP)
Hello all,
Quick question on grounding an electric motor.
I have an old Ajax motor that I got free, and I'm connecting it to a cord to test to see if it works.
I'm not finding a place on the motor or box (not really sure what this is called; it's where the capacitors are) to connect a ground wire. Perhaps it was grounded through metal conduit at one time?
I'm thinking of drilling and tapping a hole through the bottom of the box (it's on the top in the attached pic) for a ground connection. Does this sound like it would be sufficient?
Thanks!
Keith
Quick question on grounding an electric motor.
I have an old Ajax motor that I got free, and I'm connecting it to a cord to test to see if it works.
I'm not finding a place on the motor or box (not really sure what this is called; it's where the capacitors are) to connect a ground wire. Perhaps it was grounded through metal conduit at one time?
I'm thinking of drilling and tapping a hole through the bottom of the box (it's on the top in the attached pic) for a ground connection. Does this sound like it would be sufficient?
Thanks!
Keith





RE: Grounding Motor Frame
Yes, drilling and tapping a hole in the base plate will be good.
Bill
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"Why not the best?"
Jimmy Carter
RE: Grounding Motor Frame
I looked again inside the terminal box. Didn't find anything that looked like it was specifically for grounding, but I realized one of the four bolts fastening the terminal box to the motor housing would do nicely.
And now.... woohoo! It works!
I got this motor from freecycle. Had no history on it, and no idea of whether it still worked, but I figured chances were good.
5hp, 1ph, 240V Ajax motor with a triple v-belt pulley on it.
I know these things go for a few hundred $ new, now I need to figure out what the used one might be worth.
Keith