Timeline for Why is a railway's third line or overhead line DC and not AC?
Current License: CC BY-SA 3.0
19 events
| when toggle format | what | by | license | comment | |
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| Feb 2, 2019 at 15:00 | history | tweeted | twitter.com/StackElectronix/status/1091712988686573568 | ||
| Jan 30, 2019 at 16:29 | answer | added | Robetto | timeline score: 0 | |
| Feb 19, 2016 at 22:31 | answer | added | Nicholas Andre | timeline score: 5 | |
| Dec 3, 2015 at 22:21 | history | edited | Adam Haun |
Added the history tag
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| Apr 30, 2014 at 17:07 | comment | added | user41150 | In actual fact, there is no reason why a third rail system cannot use ac rather than the normal dc. You just have to use a non-magnetic material for the conductor rail system (e.g. aluminum, with a thin layer of steel for the surface on which the shoe mounted on the train runs. | |
| Feb 22, 2014 at 13:00 | answer | added | Paul | timeline score: 0 | |
| Jun 25, 2013 at 16:49 | answer | added | chh | timeline score: 1 | |
| Jun 25, 2013 at 15:05 | vote | accept | Josh | ||
| Jun 25, 2013 at 13:53 | answer | added | Andy aka | timeline score: 4 | |
| Jun 25, 2013 at 13:38 | comment | added | Andy aka | Basically the whole of the south eastern end of the UK use the third rail system - it was never used anywhere else in the UK and I believe a major reason was that a lot of this area is urban with low bridges hence a third rail system. DC overhead lines (5kV) were used along an old stretch from Manchester to Sheffield. | |
| Jun 25, 2013 at 13:25 | answer | added | RedGrittyBrick | timeline score: 9 | |
| Jun 25, 2013 at 13:04 | comment | added | JIm Dearden | @Josh Like most things the answer lies in historical events - at some point in time someone decided that... | |
| Jun 25, 2013 at 12:20 | comment | added | Josh | @OlinLathrop in the rail industry, the majority (like over 90% I think) have DC third rails or overhead lines. | |
| Jun 25, 2013 at 12:19 | history | edited | Josh | CC BY-SA 3.0 |
added 263 characters in body
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| Jun 25, 2013 at 12:16 | comment | added | Josh | @JImDearden I've read that wiki page before, and it doesn't really state why it's DC. | |
| Jun 25, 2013 at 12:16 | comment | added | Josh | @CamilStaps I am in US, but I found this wiki article en.wikipedia.org/wiki/Railway_electrification_in_Great_Britain which says that most of the railways in Great Britain are DC. | |
| Jun 25, 2013 at 12:12 | comment | added | Olin Lathrop | I know some trolleys run (ran) on DC, something like 500 V if I remember right. However, this is probably highly dependent on the particular trolley system. Which one are you asking about? | |
| Jun 25, 2013 at 12:05 | comment | added | JIm Dearden | when in doubt consult the great Wiki en.wikipedia.org/wiki/Overhead_line | |
| Jun 25, 2013 at 11:59 | history | asked | Josh | CC BY-SA 3.0 |