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    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #21

    Jan 6, 2009, 08:54 PM
    Well... maybe a little. You got to start somewhere.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #22

    Jan 6, 2009, 08:56 PM

    Show us how its done.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #23

    Jan 7, 2009, 12:33 AM
    The shunt as it is being called is used in many cases to allow 120 volts through at all times to keep the windings in the compressor warm. I is a cheap way to have a built in crankcase heater. Class for today is over.
    rajendra5454's Avatar
    rajendra5454 Posts: 2, Reputation: 1
    New Member
    		  
    #24

    Aug 5, 2010, 01:58 PM

    Its user free
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #25

    Aug 5, 2010, 02:45 PM

    I always stock 2 pole contactors and wire them, for friends and family, as a single pole. If they ever go bad, I just use the other pole the next time they call me back. Bosses don't like this practice because you can't sell a new contactor when you have to go back.

    The price difference is like $1.80 single vs double.

    There really is a good reason why manufacturers started using a single pole but I'm drawing a blank as to why. If I remember I'll post it later.
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #26

    Aug 5, 2010, 03:52 PM

    Oh, I did remember. Manufactures actually found a single pole was more reliable than a double and cheaper too. Only 2 points to foul out. Only 2 points for an earwig to crawl under and a bit cheaper t0o manufacture. A two pole contactor actually has 4 point of contact, two on each pole.
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