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Thread: PV Disconnecting means

  1. #1
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    PV Disconnecting means

    The Utility companies in Michigan require a AC disconnect between the inverter AC output and the back feed breaker in the electrical panel, to be located in proximity to the utility meter. If i am installing a service disconnect off the meter and converting the existing electrical panel to a sub-panel, can the new service disconnect be also used as the solar AC disconnect ? (they serve the same purpose). Where can i find verbage to validate this /
    Thank you

  2. #2
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    Quote Originally Posted by Eros View Post
    The Utility companies in Michigan require a AC disconnect between the inverter AC output and the back feed breaker in the electrical panel, to be located in proximity to the utility meter. If i am installing a service disconnect off the meter and converting the existing electrical panel to a sub-panel, can the new service disconnect be also used as the solar AC disconnect ? (they serve the same purpose). Where can i find verbage to validate this /
    Thank you
    I don't think so. Most utilities want to be able to shut off and lock out the solar feed without affecting anything else.

  3. #3
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    Quote Originally Posted by Eros View Post
    Where can i find verbage to validate this /
    Thank you
    You should be able to get the exact language directly from the utility. They should have a person or group that handles interconnections that can help you out.

  4. #4
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    Line side tap, back fed ,service disconnect to combiner and probably a few other methods all have one thing in common. They all will have a service disconnect grouped by the meter.
    The hardest faults to clear are mine

  5. #5
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    Quote Originally Posted by electricalist View Post
    Line side tap, back fed ,service disconnect to combiner and probably a few other methods all have one thing in common. They all will have a service disconnect grouped by the meter.
    Deleted

  6. #6
    Join Date
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    Quote Originally Posted by Eros View Post
    The Utility companies in Michigan require a AC disconnect between the inverter AC output and the back feed breaker in the electrical panel, to be located in proximity to the utility meter. If i am installing a service disconnect off the meter and converting the existing electrical panel to a sub-panel, can the new service disconnect be also used as the solar AC disconnect ? (they serve the same purpose). Where can i find verbage to validate this /
    Thank you
    Your description is a little unclear. Why are you installing the new service disconnect.

    If you're doing a supplyside connection and will have one new disconnect for the loads and one new disconnect for the solar, then the latter can fulfill your utility requirement, I would think.

    If the new service disconnect is being put in for some other reason and will disconnect more than just the solar from the grid, then it won't suffice.

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