electric supply is in sections, sections are designed so that no one train can act as a link conductor between sections, (if it did it would explode!). Get a train stuck between sections (because of line failure) and you have issues. Also UK railways use 25kv OHL, its robust enough to cope with small surges, but a major surge happened apparently over a large area, and with most modern trains computer controlled, i bet a lot had to be rebooted*
*spent a fascinating 25 minutes watching a driver then a tech at Waterloo once, trying to get a class 444 Desiro to separate in half, then get ready to move. Much lengthy rebooting of system required!
And of course you have the eternal headache that crops up every time, stock in all the wrongs places at all the wrong times.
Last edited by: Zero on Sat 10 Aug 19 at 10:54
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