01-14-2014, 05:27 PM
I fixed my friend up with the same re-purposed SmartUPS 3000 that I installed for myself. It runs his catchment pump OK. This UPS inverter has a capacity of 2,700 watts (3,000 volt-amps) and is pure sine wave. His pump is 1/2 hp and is set up for 120 volts. Checking the obvious first, what voltage and HP is your pump? If you are trying to run a 220 volt pump on 110 it's not going to run well. When you say it wouldn't power the pump, what happens? Does the inverter trip off? Does the pump sit there and hum?
Some motors will run on modified sine wave but will draw more current. Given that my friend's pump runs OK on a 2,700 watt inverter I would suspect the problem is due to a MSW inverter rather than too small an inverter. Course if you already have a TSW inverter then I am obviously wrong.
Some motors will run on modified sine wave but will draw more current. Given that my friend's pump runs OK on a 2,700 watt inverter I would suspect the problem is due to a MSW inverter rather than too small an inverter. Course if you already have a TSW inverter then I am obviously wrong.