PC form factor

From: cem14_at_cornell.edu <(cem14_at_cornell.edu)>
Date: Thu Jul 8 13:05:16 1999

On Thu, 8 Jul 1999, Max Eskin wrote:

> On Thu, 8 Jul 1999, Dwight Elvey wrote:
> >Phone lines, and well protected
> >phone lines at that, are one of the most common sources
> >of lightning electrocution.
>
> This is only true for overhead lines, and not when they are buried under
> the street, correct? Actually, some of the main lines are fiber-optic now,
> which shouldn't carry a surge.

Not necessarily; it depends on the conductivity of the ground at the
spot where the lightning strikes. I've seen underground power cables
damaged by lightning that made its way through 1 meter of soil and
concrete. The path of conduction was a beautifully cristalized mess.


Carlos.
Received on Thu Jul 08 1999 - 13:05:16 BST