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

[EWKehren at aol.com]

True if you do not include the cost of the burned down house which is a  
possibility.
Bert Kehren
 
 
In a message dated 4/12/2012 9:59:08 A.M. Eastern Daylight Time,  
jimlux at earthlink.net writes:

On  4/12/12 6:22 AM, Michael Baker wrote:
> Time-nutters--
>
>  Around here (N. Central Flori-DUH) it is not uncommon for
> near-by  lightning strikes to damage underground cables and
> wiring. This is why  buried wiring to things like driveway
> gate-openers are often placed in  conduit rather than done
> with direct-burial wiring so that if  lightning damages the
> wiring a new cable can be pulled through the  conduit without
> having to re-dig the burial trench.
>
>  Some years ago I had occasion to hold some long discussions
> with  Martin Uman, one of the worlds most distinguished and
> eminent  lightning researchers. He commented that even with
> the most  extraordinary and costly efforts to install protection
> measures,  that-- sooner or later-- there was a good chance that
> lightning would  find a way to damage things.
>


Dr. Uman (and his colleague  Dr. Rakov) probably know about lightning and 
effects than any other humans  alive.   He's making an excellent point: 
at some point, the cost  to replace the gear (or the cost of being "off 
the air") is smaller than  the cost of the protection scheme.

Sometimes, you're better off having  a sacrificial element, and a spare 
in the closet for speedy  repair.


> His lightning research laboratory was located here  in
> N.Central Florida because it is in the heart of the most
>  dense strike area in N.  America.



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