Re: is third transformer hole an earth?

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#111

From: Dave Plowman (News)
Date: Mon, 10 Nov 2008 23:45

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In article <slrnghhb1o.bes.catwheezel@ID-107770.user.individual.net>,
   Whiskers <catwheezel@operamail.com> wrote:
> Our power sockets are only 3kW each - but it isn't the Watts that really
> hurt, or even the Volts; it's the Amps you really need to be careful
> with. 60 Amps at a Japanese 100V would be a lot more dangerous than 30
> Amps at a European 230V.  (Although either could kill you, so the
> difference could be academic as far as the one grasping the wires is
> concerned).

Not quite sure what you mean. The current drawn by a given resistance is
proportional to the voltage - and touching a 1000 amp supply is no more
dangerous to a human than touching a 1 amp one.

And since the body resistance would be a constant 230 volts would cause
more current to flow than 100 - so more likely to kill. Indeed in the UK
110 volts is used on building sites for safety reasons. This is obtained
usually via an isolating transformer so there is no potential to ground.

-- 
*Hang in there, retirement is only thirty years away! *

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.

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From: "Dave Plowman (News)" <dave@davenoise.co.uk>
Subject: Re: is third transformer hole an earth?
Newsgroups: sci.electronics.repair,24hoursupport.helpdesk
Date: Mon, 10 Nov 2008 23:45:06 +0000 (GMT)
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