Hi,
I don't dispute that, and I am not saying that we should ignore the
danger, I was merely asking of the likelihood of an electric shock in
these conditions as in practice if you assume that the extension lead
would get in the water neutral, phase and earth are much closer together
than the guys in the pool, hence they would not be the preferred path.
I understand what you are saying and depending on the conditions the
likelihood of an electric shock is great but in some instances there
will be no danger at all.
Best Regards
            Luis   =20

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
Of Carl Denk
Sent: 03 August 2010 14:21
To: Microcontroller discussion list - Public.
Subject: Re: [EE] mains lead in a pool

In the early 80's Ford was building the Chihuahua, Mexico engine plant.=20
A friend engineer was assigned there during the construction where they=20
lived in a compound that had golf, swimming pool, etc. His young son=20
touched a piece of electric conduit and was electrocuted. :(  Good=20
construction codes and their enforcement is a necessary evil.

On 8/3/2010 6:31 AM, ivp wrote:
>> It seems to me that a few conditions need to be in place for you to
>> be electrocuted, hence most of the times you would be OK. The
>> problem is that with so many variables you can not be sure that you
>> would not be electrocuted, you may be unlucky
>>     =20
> A mains lead in a pool is Russian Roulette. 5 out of 6 you might not
> be shocked. The question is which path the electricity takes. If you
> are between it and a ground point chances are you'll take a hit. A
> couple of examples. Caravans (mobile homes) with incorrectly-
> wired extension leads. The whole vehicle is live, insulated somewhat
> from ground by the tyres. You step out, put one foot on the ground,
> it's curtains. And lightning strikes. They'll go through the skin of a
> vehicle (car, plane etc) without affecting the occupants. In a similar
> fashion, if you happen to be wet and get struck by lightning, the
> electricity may pass on the outside of the body rather than through
it.
> That doesn't mean to say though that a lethal portion wouldn't also
> go through vital organs. The variables are numerous
>
> I remember a couple of electricians telling me that it was wise to
> keep the left hand in a pocket to avoid hand-to-hand shock or
> left hand-to-ground, both passing through the heart
>
>   =20
>> I think mythbusters is not a good proof, as they will replicate the
>> conditions where you would definitely be electrocuted
>>     =20
> Yes, they do that, but ISTR the tests they did weren't too
far-fetched.
> I think a toaster, a hairdryer and a radio (?) were simply let drop
into
> the bath from a shelf
>
> Joe
>
> *
> *
> **********
> Quality PIC programmers
> http://www.embedinc.com/products/index.htm
>   =20
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