Quote:
Originally Posted by CoachKandSportsguy
and believe it or not, its DC current, not AC. .
and its about 10KV per porcelain suspension insulators. . .
coachk's father worked on the substations in the power industry. .
so she whipped that statistic out.
sportsguy
|
There are no DC power lines. The reason for AC power lines is that there is resistance in the wires and the further the voltage travels the more power is lost (the voltage is lowered) to the resistance, therefore the AC is put through a transformer to bring the voltage back to the original voltage. Back when Edison and Westinghouse powered two different cities, one with AC (Westinghouse) and DC (Edison) they found out that AC was the more practical current to use because the DC would lose its value the farther away it was from the Generator.