[TowerTalk] #2 solid or stranded for tower leg grounds

Roger (K8RI) K8RI-on-TowerTalk at tm.net
Sat Sep 15 22:46:51 EDT 2007


Try a search on "Ilisco connectors"
I found one out in my shop that is designed to mate Aluminum to Copper.  It 
is roughly 1 3/4 X 2 7/8" (Give or take a tad ) and fits either a 9/16" or 
5/8" bolt. It accepts two MCM 350 cables.  There is plenty of room for this 
one to be drilled out to take a 3/4" bolt.

This page shows a few expamples. The 5/8" would need to be reamed to 3/4", 
but there is plenty of material.  Check with a local electrical supply house 
and you may find some nearby.

Good Luck,

Roger (K8RI)

> My ground connections are made to the three legs of the tilting fixture
> rather than to the tower legs. This allows me to tilt the tower without
> having to detach the ground straps. Based upon the large surface area
> contact between the tower and the tilting fixture, not to mention the
> fifteen 3/4" bolts holding them together, I think this is the best way to
> go. It appears to have worked fine when the tower was hit by lightning a
> couple of months ago.
>
> Doug
> K4AC
>
> WA5ZUP wrote:
>>
>> The tower is a crank up and tilts over.  I would prefer a ground
>> connection
>> that I can unbolt and not have to redress the ground connections each
>> time I
>> want to tilt the tower over.
>
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