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  1. #1
    Join Date
    Apr 2017
    Location
    SW Florida
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    This doesn't seem kosher

    So I diagnosed a shorted compressor on this system and noticed the wiring of it. There is a 3 pole breaker connected to this splice box with 2 single phase disconnects off it. The disconnect for this unit is shorted out and needs replaced. My gut tells me I should remove this mess (see pic) and replace it with a single phase subpanel and replace the breaker in the panel with a 2 pole. What are your thoughts?

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  2. #2
    Join Date
    Apr 2017
    Location
    Athens, Wi
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    64
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    I can't see what's going on in that wire tray very well... Do I see split bolts tapping feeders to both disconnects?

    In general using two poles of a three pole breaker isn't a problem, poles trip individually anyway.

  3. #3
    Join Date
    Apr 2017
    Location
    SW Florida
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    Thread Starter
    Yes. Split bolts tapping feeders

    Does it matter if the 3 phase power is open delta vs. WYE?

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  4. #4
    Join Date
    Apr 2017
    Location
    Athens, Wi
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    Split bolts are considered bad news... They don't tend to hold up well. If your taps are the same size as the feeder then I'd just replace them with H taps or Polaris connectors and call it good.

    If it's an open delta they might have used a three pole breaker on purpose because the B phase is a high leg. Other than that, delta or wye doesn't have much affect on your single phase circuit.

  5. #5
    Join Date
    Apr 2017
    Location
    SW Florida
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    Thread Starter
    Thanks

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