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    mickabersdad's Avatar
    mickabersdad Posts: 1, Reputation: 1
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    #1

    Dec 9, 2009, 07:15 PM
    Compressor wiring wrong
    The other day I was checking out an overheated compressor. After putting the red and black wires back on the single pole contactor, the compressor would hum then stop. A service tech came out, and said that I had put the black an red wires on wrong sides of contactor. My question is, does it matter which side the wires are installed?? I always thought that 120 volts to each wire, either way, wouldn't make a difference.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #2

    Dec 9, 2009, 07:56 PM

    A peek at the electrical diagram for the unit will answer that question. Usually, it does matter.
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