Ice Eaters are sized by the hole that you want them to create. Below is the diameter that each unit will create under normal conditions. We tell customers to always plan for the worst.
P250 - 1/4HP - 20-25ft diameter hole - 360 gallons per minute of water movement.
P500 - 1/2HP - 40ft diameter hole - 1075 gallons per minute of water movement.
P750 - 3/4HP - 60ft diameter hole - 1250 gallons per minute of water movement.
P1000 - 1HP - 80ft diameter hole - 1400 gallons per minute of water movement.
Any power cord over 150ft will have to be 230 volt due to the amperage draw.