Full speed is 14.6 Amps @ 115V = 1.7 kw and low speed is 4.7 amps @ 115V = 540 Watts. In this case, the pump uses a bit more in power than the breaking HP would suggest. The reason for this is that the efficiency is a bit less than the Northstar but still a fairly efficient pump. Better to use amps * volts to calculate power.

Note that this is an up-rated pump which would be identical to the 3/4 HP full rate. Either way it is probably more than enough pump.

You should also double check the voltage requirements. It may be able to operate at both 115v & 230v but the title says 230v while the details say 115v.