I just inherited several APC RT2200 (SURTA2200XL) UPSs with "add-on" battery packs. Due to their size (ampacity), they require 20A branch circuits.
I'd like to use them on standard 15A branch circuits. I like the extended up-time they'll afford (esp with the add-on packs!) moreso than the power handling capability.
So, I can easily replace the power cord to workaround that obstacle. And, probably replace the breaker with one of a lower rating. (The output connections are all NEMA 5-15R so there shouldn't be a Code issue, there) But, I can't prevent the UPS from trying (and succeeding) to service a 20A load (short of a firmware hack).
If I take care to ensure my load never exceeds the ~15A (in addition to the above changes), is there ever any condition where the UPS could try to PULL more than 15A from the mains? I.e., would the UPS ever be "surprised" to find the breaker tripping in what it considers "normal operation"?
I'd like to use them on standard 15A branch circuits. I like the extended up-time they'll afford (esp with the add-on packs!) moreso than the power handling capability.
So, I can easily replace the power cord to workaround that obstacle. And, probably replace the breaker with one of a lower rating. (The output connections are all NEMA 5-15R so there shouldn't be a Code issue, there) But, I can't prevent the UPS from trying (and succeeding) to service a 20A load (short of a firmware hack).
If I take care to ensure my load never exceeds the ~15A (in addition to the above changes), is there ever any condition where the UPS could try to PULL more than 15A from the mains? I.e., would the UPS ever be "surprised" to find the breaker tripping in what it considers "normal operation"?
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