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Re: DC power versus AC power

  • From: David Diaz
  • Date: Sun Dec 29 20:51:32 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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