[TowerTalk] Grounding connection to tower legs

Jim Thomson jim.thom at telus.net
Sun Oct 15 12:06:51 EDT 2017


Date: Thu, 12 Oct 2017 19:41:54 -0500
From: "Jeff Blaine" <jeff at ac0c.com>
To: <towertalk at contesting.com>
Subject: [TowerTalk] Grounding connection to tower legs

<What?s the best way to connect the copper wire/strap to the 55G tower leg?

I?m planning to clean the galvanized leg, wrap the leg with a layer of 0.005? SS shim stock and then use a couple of SS hose clamps to hold the wire against the tower leg.  

Is that the right way to do the attachment?

Should I use any copper paste as well?  

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie

##  What does  Rohn have in its catalog ??     They must have the correct compression assy for 55-G  legs.  I used 2 gauge stranded copper wire, insulated, like RW-90.
One end to cadwelded ground rod, with cadweld and top of ground rod a few inched below the ground.    Other end goes to compression lug fitting.   Correct die used to compress
the lug onto the 2 gauge  stranded cu.  Hole in compression lug  bolted to tower base.  But that part  depends on what type of tower it is.   For something like  55-G legs, it should
consist of a 2 x piece clamshell  with a big enough flange to handle the mating compression lug assy.   Use thin  layer of penetrox goop on the leg, and where the mating flange +  
compression fitting bolt together.    SS  +  cu is bad news.  So is  SS  and galvanized surfaces. 

Jim   VE7RF 



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