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Old 07-01-2010, 01:31 PM   #1
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3 phase


How do I ohm a three phase motor to know if It is good or not. The motor is on a garbage disposal. Insinkorator SS-150, do I just ohm the Three primary leads 1,2,3, . And is there a helpful website that explains three phase motors and wiring? Thanks in advance

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Old 07-01-2010, 04:10 PM   #2
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3 phase


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Originally Posted by Livewire78 View Post
How do I ohm a three phase motor to know if It is good or not. The motor is on a garbage disposal. Insinkorator SS-150, do I just ohm the Three primary leads 1,2,3, . And is there a helpful website that explains three phase motors and wiring? Thanks in advance
Wow, a three phase garbage grinder.
http://www.insinkerator.com/product/...=32&template=c
This is in a commercial site?
A to B, A to C, and B to C should all read the same.


Last edited by a7ecorsair; 07-01-2010 at 04:21 PM.
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Old 07-01-2010, 08:22 PM   #3
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3 phase


I have see few but useally found in restuarnts or large area they are useally 3/4 HP or larger.

However just be forewarn some three phase garbage dispoal will have more than just 3 wires { it will be either 6 or 9 leads as well }

What voltage this motor is wired on 208 or 240 or 480 volts ?

If latter you will not able use it. unless you have transfomer to change the voltage.

Merci.Marc
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Old 07-01-2010, 11:47 PM   #4
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3 phase


Measure the leads line to line ,looking for 20 ohms, then line to frame ,looking for open.
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