07-30-2018, 02:46 PM
For years I ran off an APC SmartUPS300. It was good for 2,700 watts 120vac, pure sine wave. It put out excellent quality power but was very sensitive. It had very little surge capacity. I never ran a domestic water pump off of it although I did run a small wastewater pump system of the kind that you would put under a bar sink in the basement to pump the drain water up to the regular sewer system. It worked fine. I actually had more than one of these UPSs and my friend is using one. He does start a regular water pump with his. It works OK.
I myself have a Dankoff 48vdc vane pump that works great. I had the smaller RV pumps before but they just did not have the output that the Dankoff pump does. I would not hesitate to run a 120vac pump off my current system but am nevertheless glad that I have the 48vdc pump. I do have a small 12vdc pump powered by a 48vdc to 12vdc converter to supply my RO water faucet. The RO water is produced from the larger pump and stored in a 55 gal drum from which it is pumped by the small 12vdc pump, which only runs when the RO watr faucet is turned on. There is a pressure switch built into that pump. It also has a bypass to allow variable flow without the pump constantly cycling.
I myself have a Dankoff 48vdc vane pump that works great. I had the smaller RV pumps before but they just did not have the output that the Dankoff pump does. I would not hesitate to run a 120vac pump off my current system but am nevertheless glad that I have the 48vdc pump. I do have a small 12vdc pump powered by a 48vdc to 12vdc converter to supply my RO water faucet. The RO water is produced from the larger pump and stored in a 55 gal drum from which it is pumped by the small 12vdc pump, which only runs when the RO watr faucet is turned on. There is a pressure switch built into that pump. It also has a bypass to allow variable flow without the pump constantly cycling.