Originally Posted by CoachKandSportsguy (Post 2185652)

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

Originally Posted by jimmy o (Post 2186219)

as a retired energy guy i can affirm that those transmission lines are ac. While a whole lesson in electric transmission is impossible on this forum, i’ll give you some info that should satisfy some of your curiosity. The whole eastern interconnect is ac with a little dc going to some isolated large use customers. We are part of the eastern interconnect. The us eastern interconnect goes from canadian border to southern tip of florida to the rocky mountains, but not into texas. Texas has its own dc transmission interconnect. Ercot. West of the rockies is the western interconnect. The canadian electric system has some dc that has special rectifiers where their system meets the eastern interconnect. The high voltage of the transmission lines throughout the eastern interconnect is all ac and the voltages vary from 138,000 volts (138 kv , 230 kv, 250kv, 345kv, 500 kv, and also some 765kv) 500kv has multiple strands for each phase, and 765 kv are monsters that you won’t see around here. You can distinguish higher voltages by observing the distance that lines are separated. The three lines that you see running parallel to each other are really one transmission line as each line has 3 phases. So if a tower has three lines hanging on it that tower is supporting one transmission line. If you see 6 lines then the tower is supporting two transmission lines. Check the size/ length of the insulator holding the lines and the longer set of insulators with tell you which line has the higher voltage. Ignore the small wire going across the top of the transmission tower as those are for lightning strikes. The voltage you’re asking about is probably 230kv, and 345kv.

Originally Posted by bobeaston (Post 2185637)

There are 2 sets of lines, one with triple lines running through the center of the village on tall masts, and another with multiple sets of lines running parallel to Morse Blvd on very large multi-footed towers.

Does anyone know the voltages carried by these lines?

and for the wise ones who will ask "why," I answer "just curious."

Originally Posted by joelfmi (Post 2186276)

This information is protected. and given on a need-to-know Basis..

Originally Posted by Goldwingnut (Post 2185658)

Nope, Edison lost, Tesla proved that AC was the better power delivery method - less line losses, greater transmission distances, and transformer action allows easy adjustment of voltage - higher or lower as needed. Very very few transmission lines in the USA or anywhere else in the world are DC.

The lines going through Chitty Chatty are most likely 34.5KV, this line is the major feeder to all of the south end of Sumter County.

Originally Posted by BrianL (Post 2186301)

Within the United States, High-Voltage long distance lines are typically DC running anywhere from 100 kV to 800kV. It is not obvious as to the type of transmission used within Sumter County. The obversion that the large round ceramic insulators are 10 kV insulators is correct. So if you have 10 of these, it will be a 100 kV line; however, that doesn't determine if it's AC or DC. There are excellent reasons for DC in power transmission, you can read about them in wikipedia. If there are more than 4 ceramic insulators, the lines are unlikely to be 34.5 kV lines. Power line transmission is substantially different than local power distribution. The only way to really know the voltage of the lines would be to contact SECO, provided that the transmission lines going through the are even SECO lines. They would likely know the correct answer to the question regardless of the actual owner of the lines.

Originally Posted by BrianL (Post 2186301)

Within the United States, High-Voltage long distance lines are typically DC running anywhere from 100 kV to 800kV. It is not obvious as to the type of transmission used within Sumter County. The obversion that the large round ceramic insulators are 10 kV insulators is correct. So if you have 10 of these, it will be a 100 kV line; however, that doesn't determine if it's AC or DC. There are excellent reasons for DC in power transmission, you can read about them in wikipedia. If there are more than 4 ceramic insulators, the lines are unlikely to be 34.5 kV lines. Power line transmission is substantially different than local power distribution. The only way to really know the voltage of the lines would be to contact SECO, provided that the transmission lines going through the are even SECO lines. They would likely know the correct answer to the question regardless of the actual owner of the lines.

Originally Posted by CoachKandSportsguy (Post 2185652)

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

Originally Posted by DDToto41 (Post 2186447)

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.

Originally Posted by Fused Glass (Post 2186086)

And buy near the turnpike

Originally Posted by JMintzer (Post 2185651)

"Whatever it takes... ":a20:

Originally Posted by DDToto41 (Post 2186447)

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.