DC power versus AC power

David Diaz techlist at smoton.net
Mon Dec 30 01:45:48 UTC 2002

While I would normally think some of this exaggeration.  When I was 
at Netrail, I did a road trip to upgrade a facility in DC.  It's 
kinda amazing what passed for colo in those days.  The little UPS 
actually had a string of Pet boys car batteries.  Nathan Estes 
dropped a wrench into the battery bay and there was a nice explosion 
according to him.  The wrench literally vaporized.  Now I said that 
wasnt possible.  He will stick to his story to this day.

The only thing I could figure was that it literally moltified into 
super small droplets and just sprayed.  Regardless of whether it's 
completely accurate, he was out searching for another wrench... it 
took a lot of chocolate mile to relax him after that.

At 20:11 -0500 12/29/02, David Lesher wrote:
>Unnamed Administration sources reported that Scott Granados said:
>>  Is 48V DC at the amps present normallyin switch rooms etc enough to cause
>>  electricucian?  I have seen bad things with wrenches dropped across
>>  batteries even 12 volt car batteries although in this case it was a large
>>  battery bank in a submarine but I was curious about the 48V sources in
>>  switch rooms.
>Electrocution is but one way to die from too many columbs.
>Internal burning is a big one.  Most people die, not from immediate
>cardiac arrest, but rather from kidney/spleen/liver failure as
>they try to remove the cooked you parts from your bloodstream,
>and clog up. (First responder treatment is multiple saline inputs
>to flush you out, and keep flushing you. This via a friend who was
>"lit" and lived.)
>The instantaneous short circuit current available from a CO-grade
>battery string is nothing short of frightening. It will easily
>turn a 18" crescent wrench bright orange and start spitting the
>molten metal around within few seconds.
>I'm surprised you're still around after a sub battery accident.
>They're a grade up from most CO's in available current, I'd bet.
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David Diaz
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