It says 3200 GPH, which is about 53 gallons a minute.. Which is a lot more capacity than I'll ever need.
I was less concerned about the per/watt as I was about the total watts used.
From what I found looking at these things, 300 watts is pretty low usage.
Because the size of the sump holes are not that big, the amount of water removed in a cycle is pretty small. At 0.89 gallons a second, all the water will be gone in about 10 seconds. And because of the way the float delay works, the pump will turn off a couple seconds later.
No need to worry about the inverter overheating.
Not a trash pump.. Made for dirty water only. Three years warranty for sump-pumping and one year for continuous duty (fountains etc)..
During continuous duty, the pump must be at least 2/3 underwater..
For cooling.