Inverter problem
If you got the store bought APC 350 UPS, you most likely overloaded them, and killed them beyound repair.
People should never buy a 350VA. They are way to small for power supplies most of us now have. you need to start out to 1000VA plus you need to do the math to figure out how big of a UPS you actually need in the show room.
What am I talking about? What is the significant, or the math of what I am saying here. 115V x 1 amps = 115VA x .778 power factor = 89.47 watts Start up 50 watts = 39.47 watts
115V x 2 amps = 230VA x .778 power factor = 178.94 watts Start up 50 watts = 128.94 watts
115V x 3 amps = 345VA x .778 power factor = 268.41 watts Start up 50 watts = 218.41 watts
115V x 4 amps = 460VA x .778 power factor = 357.88 watts Start up 50 watts = 307.88 watts
115V x 5 amps = 575VA x .778 power factor = 447.35 watts Start up 50 watts = 397.35 watts
115V x 6 amps = 690VA x .778 power factor = 536.82 watts Start up 50 watts = 486.82 watts
115V x 7 amps = 805VA x .778 power factor = 626.29 watts Start up 50 watts = 576.29 watts
115V x 8 amps = 920VA x .778 power factor = 717.76 watts Start up 50 watts = 667.76 watts
115V x 9 amps = 1035VA x .778 power factor = 805.23 watts Start up 50 watts = 755.23 watts
115V x 10 amps = 1150VA x .778 power factor = 894.70 watts Start up 50 watts = 844.70 watts
115V x 11 amps = 1265VA x .778 power factor = 984.17 watts Start up 50 watts = 934.17 watts
115V x 12 amps = 1380VA x .778 power factor = 1073.63 watts Start up 50 watts = 1023.63 watts
115V x 13 amps = 1495VA x .778 power factor = 1163.11 watts Start up 50 watts = 1113.11 watts
115V x 14 amps = 1610VA x .778 power factor = 1252.58 watts Start up 50 watts = 1202.58 watts
115V x 15 amps = 1725VA x .778 power factor = 1342.05 watts Start up 50 watts = 1292.05 watts
115V x 16 amps = 1840VA x .778 power factor = 1431.52 watts Start up 50 watts = 1387.52 watts
115V x 17 amps = 1955VA x .778 power factor = 1520.99 watts Start up 50 watts = 1470.99 watts
115V x 18 amps = 2070VA x .778 power factor = 1610.46 watts Start up 50 watts = 1560.46 watts
115V x 19 amps = 2185VA x .778 power factor = 1699.93 watts Start up 50 watts = 1649.93 watts
115V x 20 amps = 2300VA x .778 power factor = 1789.40 watts Start up 50 watts = 1739.40 watts
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