What size water wheel do I need?
What size water wheel do I need? Diameter of wheel Divided by 64.4, we get an answer of 1.55 feet. In other words, the water is moving as fast as it would if it had fallen 1.55 feet. Your wheel should then be at least 4.65 feet to 9.3 feet in diameter (E.g.: 3 x 1.55 = 4.65 or 6 x 1.55 = 9.3). Whenever possible, make the wheel as large as you can. Can a water wheel power a home? But a 10-kilowatt microhydropower system generally can provide enough power for a large home, a small resort, or a...