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[TowerTalk] Station grounding in a steel enclosure?

To: towertalk@contesting.com
Subject: [TowerTalk] Station grounding in a steel enclosure?
From: trentkd5ia--- via TowerTalk <towertalk@contesting.com>
Reply-to: trentkd5ia@aol.com
Date: Sun, 28 Aug 2016 01:28:16 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
My remote station is approaching completion.  A 70' tower, wireless internet, 
solar power and RemoteRig with a TS480 is all operational.  Still in progress 
are the antennas to be mounted, and lightning protection.  I have a question 
about grounding.  The electronics are housed in a valve box--a galvanized steel 
cylinder 5 feet in diameter and 4 feet tall, with 3 1/2 feet of that in the 
ground.  A removable steel lid covers it.  All cables are in PVC pipe and enter 
the housing under ground level, and the valve box is 12 feet from the base of 
the tower.

The grounding system will consist of 9 ground rods, 3 connected to each leg of 
the tower and extending out from the tower.  The valve box will also be 
connected to the grounding system.  Polyphasers will protect against surges.  

My question is, can I install the surge protectors inside the steel housing, or 
should they be mounted outside the valve box?  I'm thinking that the steel 
cylinder possibly acts as a Faraday cage, and the grounding connection and 
surge protection should be attached on the outside wall of the housing.  Any 
comments or suggestions, please?

Thanks!

Trent K5XM   on the windy and lightning prone West Texas plains

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