PrinceGaz wrote:
> Like Jim, I was gonna say it's more likely caused by acid than volts, otherwise
> there'd be health warnings on the average PP3 battery (9v). I'm not saying
> you haven't been injured, and no injury is at all funny, but I honestly think that
> to say a 12V potential caused it is madness. Even a 24v (?) boat battery
> wouldn't cause any injury in my opinion [a guess admittedly, but an educated
> one based on silly experiments when I was a silly 12 yrs old boy connecting
> about ten PP3s in series- they're just the right size to plug into each other].
I think the damage is caused more by the current potential in the battery rather than
voltage potential. Although a car battery is only a few volts higher than a PP3, I
don't think linking 2 PP3 batteries together would give you adequate power to start
the car. A conventional car battery (to my knowledge anyway) delivers 12V at 5A. A PP3
delivers 9v at 0.55A by comparison, so the car battery will be able to complete a
circuit through something with much higher resistance and much more effectively. In
the case of the arm, the burning was obviously a slow process, and the damage was only
done because the circuit was complete for some time.
DC is also more dangerous than AC for a different reason AC electocution is easier to
fel because it will be like something vibrating at 60Hz (or 50Hz in the UK) but DC is
a constant unvarying supply, so the only way you will feel a DC shock is from the pain
when you start to burn or your muscles spasm.
--
Magic
Location : Portsmouth, England, UK
Homepage : http://www.mattnet.freeserve.co.uk
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"A book judged by it's cover makes for a very shallow read."
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