Shezzee Ed thanks for muddying the waters! You are talking about transformers or the transmission line itself. Wattage with the same load will also increase when you raise the voltage for a fixed load. Lets take the same example.

So lets use 500 mA or .5 amps. The load resistance is therefore 4.8/.5 or 9.6 ohms. P=IXE .5 A X 4.8 volts = 2.4 watts

If we use a 6 volt battery pack the current draw is I=E/R or 6/9.6= .625 or 625 mA current draw. .625 A X 6 volts = 3 watts

IF THE LOAD REMAINS THE SAME - AND YOU INCREASE THE VOLTAGE THE CURRENT WILL ALSO INCREASE. PERIOD.

Kurt it does not prove your point. Look at the math. Please look at the math.

John