This circuit demonstrates how delivering power with higher voltage means less power loss in a similar piece of wire. I am using DC in my example because AC with this app doesn't show RMS. The top circuit shows an output voltage of 120 V and 2 Amps which is 240 Watts. The 1 ohm resistance in series is like the loss in a wire. 2 Amps squared times 1 ohm is 4 Watts loss in the wire. The green shows 2 Volts loss and 2 Amps which is 4 Watt loss. The bottom circuit output voltage is 240 and 1 Amp which is 240 Watts. The same 1 ohm loss in the wire only got 1 amp. 1 amp squared times 1 ohm is 1 watt. The Red line shows 1 volt loss and 1 amp which is 1 watt loss. Using 240 volts You got 1 Watt loss in the wire instead of 4 Watts to deliver 240 Watts to the output The wire only gets 1/4 as hot. Europe got a better 240 Volt system then the USA does with 120 Volt.
