Subject: Re: Grounding on more than 1 point dangerous?
From: Henry Spencer <email@example.com>
Date: Feb 21 1996
In article <firstname.lastname@example.org> email@example.com
(Daniel Donate Reuss) writes:
>I have seen in the FAQ (yes, I have read it :-) ) that grounding an Ethernet
>network on more than 1 point can even be dangerous to people, but it doesn't
>explain why. Can sb. tell me the reason? (Just curiosity)
There can be significant voltage differences between so-called "grounds"
at different points in a building. (Anyone who runs copper Ethernet
cables *between* buildings should be shot.) If your Ethernet cable is
connected to one of them, and you're about to plug in a connection that
will ground it to another one, you are completing a circuit that may have
rather a lot of current flowing in it. That's inherently dangerous.
Space will not be opened by always | Henry Spencer
leaving it to another generation. --Bill Gaubatz | firstname.lastname@example.org