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I bought a new GE motor relay WH12X235 to replace to old one that shorted. I need to know how to connect the wires. Yes, being the "pro" that I am :rolleyes:, I forgot to mark the wires before removing the old relay. There are four wire combinations: single white; single orange; double light blue - purplish blue; and white - white brown. Can anyone tell me how to connect these wires to the relay? Thank you!
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Refer to the schematic in the back of the control panel.
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Thank you for the advice. I did refer to the schematic before I posted my question. I was confused because I assumed the schematic showed the relay with the terminals facing me, and that would have put the orange wire on the wrong terminal. If I assume that the schematic shows the relay with the terminals facing away (into the page) then it is ok. Anyway, what could happen if I wire the relay incorrectly? Thanks!
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One set of wires that go in series to the start winding of the motor go to the relay switch, the other set goes to the relay coil and are in series with the motor run winding. One set of wires are the dark and light blue ones.
If you wire it wrong, you could burn out the start winding in the motor. Be prepaired to turn off power quickly if the motor starts to smoke.
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So, if I understand you correctly, even if I wire the relay the wrong way, I should be OK as long as I turn off the power immediately. Will the motor always smoke if wired incorrectly? If the motor does not smoke, does that mean it is wired properly? I am just wondering if this will be the only warning sign. Thanks again!
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Rank: Advanced Member
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If you wire it correctly, the motor will start up and run and the start winding current will go to zero. Other combinations will make the motor hum, but not start, or run and put out a lot of smoke!
The way this relay works is the initial high locked rotor current will close the relay switch thus applying start current to the motor start winding. As the motor gets up to speed, the run current goes down sufficiently to cause the relay to drop out the start switch.
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Rank: Member
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Thank you so much; you have been very helpful!
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