An AC well pump requires a lot of power to start up and run. It is comparable to running an air condition on solar, so make sure your inverter can handle its requirements before proceeding. To calculate wh.
How many watts does an inverter need?
If you have a 1.5 HP pump, its running watts is going to be around 1500 watts, more or less. However, pump motors need a surge of power to start up. In a 1.5 AC pump this is about 3000 watts. Add 25% to 3000 watts and you get 3750 watts. Round that off to 4000, and that is the inverter you need.
Can a 500W inverter run a well pump?
As long as the inverter can handle the surge watts, you should be able to run the pump without trouble. Of course the rest of your solar system must be of sufficient size too. Does this mean you should get a 500W inverter? No, because the well pump still needs 3000 watts approximately during startup.
Never assume, measure it . You could be wired for 240vAC. However with this being a 1/2hp pump you should be able to power it with a 2000w inverter if the voltage is correct. I power my 1/2hp 120vAC water pump with my 3000w (24vDC) without problems.
You could be wired for 240vAC. However with this being a 1/2hp pump you should be able to power it with a 2000w inverter if the voltage is correct. I power my 1/2hp 120vAC water pump with my 3000w (24vDC) without problems. But understand that not all 2000w inverters are equal.
Can a mpp2724 inverter run a jet pump?
I have a 1/3Hp jet pump that pumps from a tank in my cabin, the MPP2724 inverter (2700 Watts, 24 volt) runs this jet pump effortlessly with a 304Ah battery and 150A BMS, on 150A DC rated breaker. If your planning 12volt DC, you will need double the DC amperage for starting a motor than the same set up with 24vDC.
Can a sine wave inverter run a well pump?
Pure sine wave inverters lose less power than modified sine wave, which is why you can run well pumps with less power on pure sine. Majority of AC well pumps used in homes are 1 to 1.5 HP, so that is what we will use here. If you have a 1.5 HP pump, its running watts is going to be around 1500 watts, more or less.