>>21491286if you use 220 -240v, you're paying a lot more
with alternating current. both wires are to and from the power company. so they charge for electricity coming and going.
110v ac is a single leg, path to ground
one wire is "live" the other wire is ground
so half of your electrons come from earth instead of looping the power company.
lightning comes from the ground up, not the sky down, so we get half our power for free