120 volts x 20 amps = 2,400 Watts
However, if I increased the voltage and lowered the current, you can also use a smaller wire size (more inexpensive), also have less heat and achieve the same watt Power.
1,000 volts x 2.4 amps = 2,400 Watts
- Why doesn't it heat up like current?
- To me this approach seems more efficient and less costly because you don't use as much material, so why isn't this common?