The AIMS Power 5000 watt inverter with 240 volts AC output is a great choice for an off grid well pump that requires 240V ac to operate. However, keep in mind that this inverter is not a "split phase" 240V ac; you will not be able to pull one leg off to create 120V ac. The 240V ac supply is accomplished through one of the two AC receptacles, or the direct connect terminal block. This inverter will accept 12v as an input and produce a modified sine wave output. First and foremost, this AIMS inverter offers some great features that are beneficial to any system. First, the front panel has digital gauges that display DC voltage and amp draw. These gauges allow the customer to actively monitor the condition of their system with easy to read gauges. Secondly, the cooling fans are thermally controlled; which means the fans will only cycle on when the inverter is under heavy loads or the inverter is getting warm internally. Whether your well pump is off grid or you need back up power for the pump, the AIMS Power 5000 watt 240V ac inverter is a great option. For over a decade, AIMS Power has offered top of the line off grid inverters and accessories for virtually any application.