[TowerTalk] Lightning protection
Bill Aycock
baycock at direcway.com
Wed Aug 4 18:10:10 EDT 2004
Two comments from experience. Underground utilities are NOT a guarantee. I
lost a computer and a phone to a hit that was to phone equipment over a
mile away, with underground service to my house over that distance.
When I was on the local water board, I learned that most waterline repairs
are to fix lightning damage to underground plastic pipes. This came home to
me in 1990 when a hit in my yard, punched two holes in a plastic water line.
At 04:37 PM 8/4/2004 -0400, K4FJ at aol.com wrote:
>I have a couple questions regarding lightning protection, but I don't want
>to begin a thread from hell as we have recently seen on several other
>subjects. Please REPLY DIRECTLY and I will post a summary.
>
>I have a device installed to provide Whole House protection at the service
>entrance.
>
>I receive TV via a small dish on the roof. Is there a real need for inline
>protection for that? The dish is well below the highest roof line.
>
>I need to tie my antenna/shack ground to the electric ground. I am now
>aware that the connection should be made around the house instead of
>through the
>basement--the shack is in my basement. Is #4 bare copper sufficient for
>this
>or do I need a copper strip a few inches wide? Part of the trip around the
>house is under my deck. Can I run the wire/strip on the ground vice a deep
>burial? I can do a very shallow burial if needed, but I doubt that adds
>much
>to the grounding. Obviously, no ground rods will be in the area under the
>deck and that distance under the deck is about 50 feet.
>
>All of my utilities are underground and the nearest above ground departure
>is about 1/2 mile. Is it still advisable to provide inline
>modem protection?
>I have lost one modem but it is not clear why because we had no storm during
>that period. I don't mind doing the protection but I feel I am putting
>another hump in the line and my dial-up internet connection is already slow
>enough.
>
>Your thoughts are appreciated.
>
>73, Steve, K4FJ
>
>_______________________________________________
>
>See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
>Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
>any questions and ask for Sherman, W2FLA.
>
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Bill Aycock - W4BSG
Woodville, Alabama
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