Quote:
Originally Posted by Icemaster
Gents,
I've got a sump pump drawing 9.7 amps on 110VAC that I'm trying to sort a solution for a power-out scenarios. Everything I'm reading on options revolves around a retrofit, adding in a lower capacity/amp 12V pump (or an inverter) with a deep cycle battery.
Can't see why I couldn't hook my existing pump to a UPS (I have a couple) or an inverter/transfer switch to a marine battery; same concept as a plug & play UPS.
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9.7amps @ 110v is about 1100W. If the inverter is about 90% efficient (wild guess) you are looking at about 100 Amps at 12v.(1200W) Assuming a car battery with 50 Amp-Hr (600W) you would be lucky to get 30 minutes.