Editing Third rail (section)

== Non-standard voltages ==
Some high third rail voltages (1000 volts and more) include:
* [[Hamburg S-Bahn]]: 1200 V, since 1940
* [[Bury Line|Manchester–Bury]], England: 1200 V (side contact) (Until [[Manchester Metrolink|Metrolink]] conversion in 1991)
* [[Culoz–Modane railway]], France: 1500 V, 1925–1976
* [[Guangzhou Metro]] Lines [[Line 4, Guangzhou Metro|4]] and [[Line 5, Guangzhou Metro|5]]: 1500 V
* [[Bay Area Rapid Transit]], [[San Francisco]], 1000 V<ref>[https://www.bart.gov/about/history/facts System Facts]</ref><ref>{{cite web
  | title=BART – Car Types
  | url=http://www.bart.gov/about/history/cars.aspx
  | publisher=Bay Area Rapid Transit
  | access-date=23 August 2009}}</ref>

In [[Nazi Germany]], a railway system with a {{Track gauge|3m}} gauge width was planned. For this ''[[Breitspurbahn]]'' railway system, electrification with a voltage of 100&nbsp;kV taken from a third rail was considered, in order to avoid damage to overhead wires from oversize rail-mounted anti-aircraft guns. However, such a power system would not have worked as it is not possible to insulate a third rail for such high voltages in close proximity to the rails. The whole project did not progress any further owing to the onset of World War II.