[time-nuts] Thoughts on lightning protection measures....

Attila Kinali attila at kinali.ch
Thu Apr 12 16:54:18 UTC 2012


On Thu, 12 Apr 2012 09:20:37 -0700
Said Jackson <saidjack at aol.com> wrote:

> One interesting fact: frozen ground is a bad conductor.
> 
> The ground potential around your house may go up many 1000s of volts
> even with just a proximity strike, while the power feed stays down,
> blowing up anything connected to "ground". Thus the special Nordig surge
> protection requirements for TV receivers in northern European countries..

Hmm? That sounds interesting. In switzerland, and AFAIK in most european
countries, power feeds have to be grounded at the entry of the house
(ie the neutral conductor is grounded). This should protect the electrical
equipment from such ground jumps as you discribe. Or do i miss something?

			Attila Kinali

-- 
The trouble with you, Shev, is you don't say anything until you've saved
up a whole truckload of damned heavy brick arguments and then you dump
them all out and never look at the bleeding body mangled beneath the heap
		-- Tirin, The Dispossessed, U. Le Guin




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