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Thread: Panel fed from UPS a separately derived system?

  1. #1
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    Panel fed from UPS a separately derived system?

    Is the load side of a UPS considered a separately derived system? i believe there is an isolation transformer in the UPS which would make me think it is. If i am feeding a load center from the UPS i should bond the neutral correct? most standby power i have worked with in the past has been generators so this is kind of new to me. thanks for any input!

  2. #2
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    Generally if the UPS is a SDS, the N-G bond already occurred at the UPS output terminals.

    Newer UPSs are transformerless, and not SDSs. if it is the same voltage in and out.
    Ron

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