NO, cost per kwh does not change....the caveat in your statement is "adequate wiring".
Real world wires have resistance and you will lose a small but measurable amount. The voltage drop as a percentage of the total becomes smaller and smaller as the voltage goes up.
Let's look at 100 feet of 10 AWG wire carrying 5 amps. At 110 volts I lose 1 volt at the end for .91% voltage loss. At 440 I still lose 1 volt but my percent loss drops to .23%. This is with a 10 AWG copper wire at .0009989 Ohm/foot.
It just depends on what you mean by adequate wiring. To cut the loss in half in this example you could go to 7 AWG wire. At some point it gets ridiculous.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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