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  1. #1
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    Jan 2006
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    Why Does The Breaker Keep Tripping?

    Got a call yesterday from a customer who tells me he keeps having to reset the breaker over and over - but the compressor keeps tripping the breaker.


    Geez - I wonder why?

    Last edited by markettech; 12-13-2007 at 11:58 PM.

  2. #2
    Join Date
    May 2004
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    12,270

  3. #3
    Join Date
    Jan 2006
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    DFW Metroplex
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    I hear ya Lusker, but if I did that I'd have to reinvent the wheel as there is a sharp 90 about 8' above the one in the pick.

    The system in question was rated at 15.0 amp MOP and some knucklehead ran 8 ga solid to the outdoor disconnect.

    Here's what I did - and I hope it works ok long term.

    I didn't have 12 in my truck, but had 10 stranded so I pulled the 3 8's and ran 10's. My thinking is the stranded wire will be a little less rigid in the conduit and the difference in wire size should allow more play room.

    What do ya think?

  4. #4
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  5. #5
    Join Date
    Jan 2006
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    DFW Metroplex
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    Quote Originally Posted by Lusker View Post
    you know the wire size depends on the lenght of run too.. but...


    I hope you used rubber wire bushings or a wire clamp or both with a sevice loop in the box...


    I'll sic Bob on ya if not.
    Yeah - the run - it's about 40' from the panel......thought it, forgot to mention it

    Wires bushed and looped.

  6. #6
    Join Date
    Feb 2004
    Location
    Medford Oregon
    Posts
    807
    3 main cause of breaker trip
    1. wire size
    2. bad contactor
    3 turn to turn shorts in motor windings
    there are others, but these are the main ones

    note: check of winding ohms to mfr spec will confirm if it's #3

  7. #7
    Join Date
    Jan 2006
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    DFW Metroplex
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    Quote Originally Posted by rocket View Post
    3 main cause of breaker trip
    1. wire size
    2. bad contactor
    3 turn to turn shorts in motor windings
    there are others, but these are the main ones

    note: check of winding ohms to mfr spec will confirm if it's #3

    This one was a rub-through and short to ground, plain and simple.....but your reply is valid.

  8. #8
    Join Date
    Jan 2007
    Location
    maine
    Posts
    790
    u should have any problems with cutting the insulation on those 90s.. They are pull 90's so just break them apart and feed the wire

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