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#11
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#12
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On Mar 28, 11:17 am, Chris Tolley wrote:
wrote: It is very easy to find oneself on a tube platform with a group of potential assailants positioned between oneself and the exit. Quite. It must be tiresome being such a tit. |
#13
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On Mar 27, 7:06*pm, Jane Sullivan
wrote: As I understand it you cannot cross the rails to another platform on the tube except where the stations are in the open air. On the sub-surface lines (i.e. not the tube), you can, though. Even that is not true. There are many open sections where that are ''line clear'' (which means in simple terms are treated the same as tunnels) i.e. the Jubilee all the between Stratford and Canning Town portal is one. -- Nick |
#14
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On 28 Mar, 21:29, D7666 wrote:
There are many open sections where that are ''line clear'' (which means in simple terms are treated the same as tunnels) i.e. the Jubilee all the between Stratford and Canning Town portal is one. I think we can all wholeheartedly recommend jumping between the platforms on that stretch (well, except the third one at Stratford). U -- http://londonconnections.blogspot.com/ A blog about transport projects in London |
#16
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In message , "Brownz
(Mobile)" writes wrote: It is very easy to find oneself on a tube platform with a group of potential assailants positioned between oneself and the exit. In such situations the only means of escape, should the group turn hostile, would be across the tracks to the neighbouring platform. What is the recommended method of crossing tracks in these situations? There seem to be a variable number of rails making up the tracks, usually about 5. Which of these are 'live'? Will stepping on a live rail result in immediate death? What is the safe distance from a live rail? Is it safe to tread on a live rail with only one foot with the other in the air, in order to avoid earthing the current? Trial & error, its the only way to know for sure. I suggest you give it a go, trying each rail in turn. Remember to wear the proper safety gear e.g. heavy cotton or woolen clothing soaked in Water (or lighter fluid), and heavy wet woolen socks with no boots or shoes. If you don't detect a tingling sensation then you might want to lie on the track and wait for the next train to come along, the driver will see you laying there and he'll stop, you can then knock on the cab door and ask him. Please feel free to report your findings back to the group. (PS - Some or all of the above statements may well be false) (Laughing very loudly.) I recommend the use of army ammunition boots, with metal plates fore and aft. This gives the wearer a skating chance of making a meteoric impression. -- Huss Why so large a cost, having so short a lease, does thou upon your fading mansion spend? William Shakespeare |
#17
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In article , Gavin Christie
writes the running rails typically have no current going through them. False, though it will be a relatively low current and voltage. The rail in the middle and the outside 4th rail are the ones to watch out for. they have -210 volts and +420 volts running through them respectively. Approximately. They can be up to +750V in some places. -- Clive D.W. Feather | Home: Tel: +44 20 8495 6138 (work) | Web: http://www.davros.org Fax: +44 870 051 9937 | Work: Please reply to the Reply-To address, which is: |
#18
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It is highly unlikely that 750V can deliver instant death. I guess
you'd need at least 50kV for that under normal conditions. There are, however, people who have survived much higher voltages, but many have taken lasting damage in the process. There are also people who have been killed by 50V. It all depends on the duration of your exposure, the impedance of the return path and the part(s) of your body the current flows through. 5 milliamps is sufficient to permanently stop your heartbeat. So you could theoretically kill somebody with a watch battery. You'd have to dig the electrodes into the heart tissue first though, so that sort of thing is unlikely to happen by accident. On the other hand, there are people whose hands or legs have been roast to cinders, but who survived because the current didn't get anywhere near any vital organs. The safest advice is, never mess with electricity. |
#19
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On Wed, 2 Apr 2008 14:51:05 +0100 someone who may be "Clive D. W.
Feather" wrote this:- The rail in the middle and the outside 4th rail are the ones to watch out for. they have -210 volts and +420 volts running through them respectively. Approximately. They can be up to +750V in some places. And that is only the nominal voltage. The actual voltage may be higher under some conditions. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
#20
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![]() There are, however, people who have survived much higher voltages, but many have taken lasting damage in the process. Even the Americans can't electocute instantly, with 100% certainty, people who have been sentanced to death by electric chair. That can be a slow, painful death, requiring several attempts, before the subject dies. -- Cheers Roger T. Home of the Great Eastern Railway at:- http://www.highspeedplus.com/~rogertra/ Latitude: 48° 25' North Longitude: 123° 21' West |
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