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Old August 9th 03, 06:06 PM posted to uk.transport.london
Dr Ivan D. Reid Dr Ivan D. Reid is offline
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First recorded activity at LondonBanter: Jul 2003
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Default Shielding 750 volt 3rd rail ?

On Fri, 8 Aug 2003 23:43:59 +0100, Michael Bell

wrote in :

* The danger of electrocution means that voltages cannot be
raised to increase power delivery. Italian state railways (FS =
Ferrovia della Stato) started with 3000 volt overhead wires, but
everything has now been done so that they can increase the voltage to
6000 volts, so doubling the power that can be delivered.


Redo your maths; V*2 = P*4, modulo foibles of inductive loads.

--
Ivan Reid, Electronic & Computer Engineering, ___ CMS Collaboration,
Brunel University. Room 40-1-B12, CERN
KotPT -- "for stupidity above and beyond the call of duty".