Timeline for Why are high voltage lines “high voltage?”
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 18, 2013 at 22:24 | comment | added | Jesus | @Carl Witthoft: I was not asking about why the voltage is high and the current is low in power lines. I feel that I understand that very well. | |
| Nov 18, 2013 at 22:20 | comment | added | Jesus | @Bjorn Wesen: Let me try to be more clearer. A high voltage line means it is measured relative to the ground. If true, can I think of a high voltage line as an "equipotential?" This is tricky because it's ac, not dc, so I really do not know enough at the moment to say so. I follow when you ask to think of voltage more like pressure, but what sets up the "pressure difference" in the wires? Are you telling me it is not charge? | |
| Nov 18, 2013 at 18:17 | comment | added | Carl Witthoft |
To be fair, if you ignore the OP's commentary and just answer the question title, that may help a lot of lurkers. The answer of course is that power P= V * I but wires dislike carrying a lot of I so bumping up the V delivers more power with less physical wire :-)
|
|
| Nov 18, 2013 at 17:16 | history | answered | BjornW | CC BY-SA 3.0 |