Re: Battery Changing

I don't skydive either. <G>

don


"Ken Blake, MVP" <kblake@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:O8zDcxDsGHA.1216@xxxxxxxxxxxxxxxxxxxxxxx
Don Schmidt wrote:

Ken,

I don't think 12 DC is capable to injure an individual, just not
enough voltage to pass it through the human body. i.e, touching the
negative terminal of a car battery with the left hand while touching
the positive terminal with the right hand. There is ~600 amps
available but the 12 volts just cant get the current through the
human body. Now if you put ten automobile batteries in series, that
will definitely fry one; still ~600 amps but with 120vdc dynamite!


Here's a link that looks pertinent:
http://66.102.7.104/search?q=cache:q75KiZtiPT0J:www.engineering-ed.org/computer_repair/documents/ELECTROCUTION.doc+electrocuted+by+car+battery&hl=en&gl=us&ct=clnk&cd=10

or http://tinyurl.com/etmnt

It states "So, a Computer that is plugged in and turned on will not
electrocute you when touching any of the boards or chips inside the case
because you are dealing with low voltages (12 volts or less), and high
skin resistance (2000 ohms or more) which limits the amperage. " which
certainly seems to support your point of view. But then it goes on to say
"When handling computer parts inside a case, use only one hand. Do not
wear a grounding strap. This makes it less likely for electricity to pass
from one hand, through the heart, and out the other hand in the event of
an electrical short somewhere." which seems to support the view that it is
at least possible, if not likely to hurt yourself.

I'll continue to take the prudent point of view, and keep the power off
and the computer unplugged whenever my hands are inside the case, and
continue to recommend that others do the same. It certainly safeguards the
computer's components, and at least *may* save my life.

--
Ken Blake - Microsoft MVP Windows: Shell/User
Please reply to the newsgroup



.

Relevant Pages

  • Re: Battery Changing
    ... enough voltage to pass it through the human body. ... negative terminal of a car battery with the left hand while touching ... electrocute you when touching any of the boards or chips inside the case ...
    (microsoft.public.windowsxp.basics)
  • Re: Battery Changing
    ... I don't think 12 DC is capable to injure an individual, ... enough voltage to pass it through the human body. ... negative terminal of a car battery with the left hand while touching ...
    (microsoft.public.windowsxp.basics)
  • Re: Battery Changing
    ... voltage to pass it through the human body. ... terminal of a car battery with the left hand while touching the positive ... just cant get the current through the human body. ... safe from any voltage danger. ...
    (microsoft.public.windowsxp.basics)
  • Re: O.T. Step Potential ...
    ... It is the voltage drop across the surface of the soil or concrete, ... and if it is high enough simply taking a step will electrocute you. ... "When a power line comes in contact with the ground, ... and standing on two of these neatly drawn circles. ...
    (sci.electronics.repair)
  • Re: Voltage fluctuation problem inside residential home monitoring, questions.
    ... place and the error code disappeared after a period of dry spells. ... not providing a constant voltage. ... The transformer is at ground level and supplies two homes. ... They don't like to electrocute their customers, ...
    (sci.electronics.basics)
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