Article 1017439 of alt.home.repair:
Path: news.misty.com!not-for-mail
From: nicksanspam@ece.villanova.edu
Newsgroups: alt.comp.hardware.pc-homebuilt,alt.home.repair,alt.engineering.electrical,alt.tv.tech.hdtv,sci.electronics.basics
Subject: Re: Surge / Ground / Lightning
Date: 6 May 2008 18:31:47 -0400
Organization: Villanova University
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Mike Tomlinson  <mike@jasper.org.uk> wrote:

>... This is an important principle of the UK wiring code. It's
>referred to as "equipotential bonding."

I wonder if "ring mains" (an extra wire from the last outlet to make 
a loop back to the fusebox) are legal in the US. Seems like a nice way
to improve voltage regulation with a little extra wire, and if the ring
wire only breaks in one place, all the outlets keep working.

Nick