220 vs. 110v SWG

[donaldm823]

Don's right about most people using 220V but actually, it's not cheaper.
P(watts) = E(voltage)X I (amps). By doubling the voltage the amperage draw is halved, but the watts will be constant whether 220 or 110.

The cost is the same.

Disagree that the cost is the same! 220v pumps are usually more efficient (and cheaper to run) since the motor amps are less which means less heat is generated in the motor windings-also the starting amps are much less. Heat is wasted electricity. There is a noticeable difference with 220v pumps running cooler and they are more efficient. The new Pentair permanent magnet motors are even more efficient based on the motive power method used in the motor's permanent magnet rotor. Ever wonder why your AC, clothes dryer or oven is always at 220v???

When you start using 1hp pumps or larger, that little bit of heat and lower motor efficiency results in higher electric bills and I am not talking chump change, but tens of dollars per month, especially up in the north where residential kwh are in the $0.15 kwh range with a pool pump running 10-12 hr per day, 30days a month.