BeanAnimal
Premium Member
The age of the house really has nothing to do with the problem you are having, nor does the fact that "others" are running "more". You are pulling around 14.5 AMPS on a 15A circuit. Again, no magic here, it's a simple fact of ohms law and the stuff you have plugged in.
Regarding the UPS. Yes the UPS will draw a few extra watts (maybe a hundred or so) due to it's charging and control circuitry and innefficiency. If the UPS has AVR (or any kind of BUCK BOOST) voltage regulation.. .then it will draw A LOT more current to keep the voltage constant. In your case, your line voltage on your tanks circuit is likely heavily sagging anyway. This will cause the UPS to try boost the voltage and in turn cause it to draw more current, tripping the breaker. There are several types of UPS topoligies and yours is likely a "line interactive" ups with or without "buck boost". It is likely not an "online" ups.
Secondly if the UPS is not a TRUE SINE WAVE unit, then it will not work with your pumps or any other motor. You will either ruin the pump and/or UPS and possibly burn down your house. My bets are that the UPS is not a true sine wave unit, as most <$500 UPS put out a square wave or modified step wave.
Bean
Regarding the UPS. Yes the UPS will draw a few extra watts (maybe a hundred or so) due to it's charging and control circuitry and innefficiency. If the UPS has AVR (or any kind of BUCK BOOST) voltage regulation.. .then it will draw A LOT more current to keep the voltage constant. In your case, your line voltage on your tanks circuit is likely heavily sagging anyway. This will cause the UPS to try boost the voltage and in turn cause it to draw more current, tripping the breaker. There are several types of UPS topoligies and yours is likely a "line interactive" ups with or without "buck boost". It is likely not an "online" ups.
Secondly if the UPS is not a TRUE SINE WAVE unit, then it will not work with your pumps or any other motor. You will either ruin the pump and/or UPS and possibly burn down your house. My bets are that the UPS is not a true sine wave unit, as most <$500 UPS put out a square wave or modified step wave.
Bean