[mythtv-users] Way OT: Re: Power outages and UPSs

[Jay R. Ashworth]

On Mon, Jul 30, 2007 at 04:05:40PM -0700, David Brodbeck wrote:
> Having done a little reading about what it takes to make a good, low- 
> impedance lightning ground, I suspect *most* homes are poorly  
> grounded.  A cold water pipe or single ground rod doesn't even begin  
> to cut it.  Ideally you'd have at least three rods, all at least six  
> feet long and wired in a star configuration.  All the house grounds  
> should be bonded to the same point to ensure that everything will  
> stay at the same potential in the event of a lightning strike.  I  
> seem to recall the ARRL Handbook had a good section on earth  
> grounds.  (It's an important topic for radio amateurs, both for  
> lightning protection and antenna efficiency reasons.)

You really want 12 feet, and rocksalt in the holes.  :-)

	http://www.google.com/search?q=ground+rod+rock+salt

Cheers,
-- jra
-- 
Jay R. Ashworth                   Baylink                      jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com                     '87 e24
St Petersburg FL USA      http://photo.imageinc.us             +1 727 647 1274