DC power versus AC power

Mon Dec 30 01:40:02 UTC 2002

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.

----- Original Message -----
From: "David Lesher" <wb8foz at nrk.com>
To: "nanog list" <nanog at merit.edu>
Sent: Sunday, December 29, 2002 4:43 PM
Subject: Re: DC power versus AC power

>
> Unnamed Administration sources reported that Michael Painter said:
> >
> >
> >
> > > >But, as Stephen already eluded to... Compared with an AC plant
design, to
> > me, one of the biggest drawbacks of a DC plant is safety  (I have had to
> > kick a fellow worker away from the rack before). <<
> >
> > What was the worker doing?  Is this 48 VDC?
>
> Bet so.
>
> And note, it's not just ISP's, of course. I heard that Sprint
> PCS ha[s,d] a Dallas tech in critical condition and a dead switch
> after a dropped wrench & resulting fire.
>
> In the words of Phil Esterhaus:
>
> Let's be careful out there....
>
>
>
>
>
> --
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