I would put some #2AWG tinned solid in the foundation and not rely on the
I have used a clamp type unit to clamp the copper strap to the ground rod.
If it's lightning your concerned with, I would not use strap. Stick with
#2AWG tinned bare copper, copper clad rods and exothermic attachment.
From: "Mat Eshpeter" <email@example.com>
Sent: Sunday, April 17, 2011 7:24 AM
Subject: [TowerTalk] grounding quesitons: Ufer, strap, exothermic welds
> I am about to pour concrete for the base of my HDX589 tower. I am going to
> go with a Ufer ground as well as the Polyphaser recommended eight 75'
> radials with multiple ground rods (8' rods every 16'). Location is on top
> of a 1600' ridge in WV and lightning is a very real concern. My QRZ web
> page gives a feel for the location.
> To build the Ufer ground, I am thinking about connecting a single bare 2/0
> stranded copper wire to the rebar. Questions:
> 1) is one enough?
> 2) how do I properly connect the copper to the rebar? Is exothermic weld
> the only way? Any problem with dissimilar metals?
> 3) how should the copper exit the base slab - above grade or below grade?
> Also, seems that copper strap is the preferred ground material for
> connecting rods together. Will 0.032" thick strap have significantly
> better longevity than 0.022" strap? I am refering to the strap sold by
> Georgia Copper. Copper is expensive and I don't want to invest in copper
> that won't add any value to my installation.
> Where can I find exothermic weld products to connect copper strap to 5/8"
> copper clad ground rods? I am exhausted reading Harger, Erico, Terraweld
> info, and can only find wire-to-ground rod products, no strap-to-rod
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