[TowerTalk] Fwd: Grounding connection to tower legs

[john at kk9a.com]

I am not aware of any clamp for attaching copper strap to a tower leg
other than a hose clamp and shim. Polyphaser sells a modified hose clamp
just for this purpose. Why would the hose clamp blow apart? I have used
this method for decades and have had multiple direct lightning strikes.

John KK9A



To:	Reflector <towertalk at contesting.com>
Subject:	Re: [TowerTalk] Fwd: Grounding connection to tower legs (Kevin
Stover, AC0H)
From:	Ward Silver <hwardsil at gmail.com>
Date:	Sun, 15 Oct 2017 21:35:32 -0500

Use a proper clamp designed to connect copper wire to galvanized tower
legs.  For Rohn 25, the clamp is part number R/CPC-1.25 and I'm sure there
is a larger one for Rohn 55.  A local electrical supply house will also
have clamps for connecting copper to galvanized pipe.  Ask for it and
follow the installation instructions regarding how to prep the surfaces
and any other cautions.  If you can't get the special clamp, you can also
use bronze grounding clamps over the stainless steel shim.  Do *not* use
stainless steel hose clamps - they will blow apart under the stress of a
lightning strike.  You spent a bazillion dollars on the tower, protect it
with the right non-corroding materials that are rated for the job.

73, Ward N0AX