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Re: lv-ab: Re: Test for electical faults in marina?

From: (no name) (no email)
Date: Mon Jun 11 2007 - 10:15:43 EDT

  • Next message: Norm of Bandersnatch: "RE: lv-ab: buy 1/2 a boat - boat share pitfalls"

    This was sent to me privately, but my response might be of interest to
    others.

    >
    >
    > Sorry about your friend, Gene. Did a salty human body make a current path
    > through fresh water to salty water below?
    >

    This was a "fresh water electrocution". In salt water it isn't so dangerous.
    The current will dissipate over a large area, since saltwater is a good
    conductor. The voltage will stay low since it leaks away. there is not so much risk
    around a boat.

    In fresh water it is a different story. Pure water isn't a conductor, fresh
    water is not pure, but has little in it to make it conduct. Therefore it will
    have an area around the source that is very charged. If you are swimming around
    (as my friend was underwater) and get into this charged area, suddenly you
    are paralyzed and cannot move. You'll suffocate since you cannot take air into
    your lungs. You don't get electrocuted in the normal sense.

    It's the same principal as the old method of "telephoning" fish, where a hand
    crank telephone is cranked, letting the leads from the generator that would
    normally ring someone on the other end, instead stun the fish. The difference
    is fish survive because they get their oxygen from the water anyway.

    They never found the source, apparently it was something on a boat that
    failed or came on occasionally and did not charge the water any time they ran
    tests. Scares the hell out of me.

    Gene Gruender
    Sun Chaser

       

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  • Next message: Norm of Bandersnatch: "RE: lv-ab: buy 1/2 a boat - boat share pitfalls"



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