Well how do you figure out what Wire size to use for a Electromagnet? The reason I ask is because I know you can just look up some AWG table's and figure out what current you will be operating at and then pick the size from there. But how do you figure out what size you need if your wire is going to be operating at high current like 100+ amps and also be very long, like 1 mile plus in length, I assume you would have to take the heat output into consideration and adjust your wire size for that?
Example:
P=I^2xR
I^2=100Ax100A=10,000
#1 guage = .1239 ohms per 1000 Ft x 5.28 (mile = 5280 Ft) = 0.654192 ohms
10000 x 0.654192 = 6,541.92 Watts
So as you can see, 6,541.92 watts is alot of power and would generate alot of heat.
Example:
P=I^2xR
I^2=100Ax100A=10,000
#1 guage = .1239 ohms per 1000 Ft x 5.28 (mile = 5280 Ft) = 0.654192 ohms
10000 x 0.654192 = 6,541.92 Watts
So as you can see, 6,541.92 watts is alot of power and would generate alot of heat.