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#9
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![]() Quote:
The run time is a factor of load. If you put one pump on a Data Center UPS, it will run for weeks before draining the batteries. I run my entire system (with the exception of the lights) on a PowerWare 1500VA UPS. If a power failure occurs, the controller shuts off everything except the sump return, powerheads, heater and skimmer. I have tested this for 4 hours and still had roughly 50% charge. One thing to watch for, and I think it was already mentioned, but make sure the UPS produces a true sine wave. I would guess that pumps don't like square waves? In the end, the UPS is such a simple solution. Although, perhaps not the cheapest. |