2006-10-25 23:18:33 · 2 answers · asked by Dude 1 in Science & Mathematics ➔ Earth Sciences & Geology
At very high voltage. The size and cost of the wires depends on how much current you run through them. And, the higher the voltage, the less current you need to run to deliver the same amount of power. Those big transmission lines you see can run up to 250,000 volts. The small lines near your home are more like 12,500 volts. The transformers on the poles take that down to 120/240 for US homes or 240/480 for businesses that need more power.
2006-10-26 10:37:03 · answer #1 · answered by Nomadd 7 · 0⤊ 0⤋
The electricity produced in power station will not directly go to the consumer. We use 230 volts in some country and 110 volts in U.S.A and Canada. This low voltage can not travel for longer distance. There fore the voltages are stepped up to 66000 volts and transmitted to the sub stations through tower grid. At sub station it is reduced again to 11000 volts. When it reaches your area it is again stepped down to 230 or to 110 volts as per the country specification via cable or over head line. The maximum the voltage we can transmit to a longer distance.
2006-10-26 06:58:52 · answer #2 · answered by A.Ganapathy India 7 · 0⤊ 0⤋