Both are 50-60 Hz (Cycles per second for us old salts) which alternate from a max positive to a max negative value at that rate. Difference is the transformer hanging on the light pole. 120 only uses half the winding....center tap to one side, whereas 240 is the whole winding.
Running distances, the losses which are non-productive are line current losses. So if it takes a certain amount of volt-amps to run a device, the lower the amps, the lower the loss, and the smaller the wire you can use to get the job done. And then there is power factor, but that isn't part of the line loss equation, just the power company's ability to sell you power...VI Cosine the phase angle.
Mark
Don't believe me? Why do cross country power lines run 66,000 volts or so?
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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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