[TowerTalk] Cadweld vs clamps

[Jim Lux]

On 10/23/14, 5:15 AM, Mike Reublin NF4L wrote:
> My electrician (who specializes in grounding) says he hasn't used Cadwelds in many years. He uses what he described as a wedge, which once set cannot be loosened. I'll see what it looks like today.
>
> 73, Mike NF4L
>

probably something like this
http://www.te.com/us/en/industries/energy/ProductSubContents.aspx?Name=9044

There's a bolt that drives a wedge irreversibly in and then the bolt 
head shears off.
TE also has the SHEAR-LOK, which is similar..
http://www.te.com/us/en/industries/energy/ProductSubContents.aspx?Name=1047


If you don't like this, and want something that doesn't involve fire and 
flame...


There are listed compression fittings.  They look like the fittings used 
to crimp steel cable, and you use a hydraulic or manual crimping device 
to clamp them on.

They're very rugged, gas tight, and don't have the fire hazard or windy 
day problems that the exothermic welds do.  (not nearly as much fun, in 
other words)

http://www.burndy.com/solutions/grounding-superstore/compression-grounding


>> On Oct 23, 2014, at 7:49 AM, Keith Dutson <kdutson at sbcglobal.net> wrote:
>>
>> I think both methods are effective.  I have used both.
>>
>> My experience shows the difference is time.  No clamp can be expected to
>> maintain its contact area with the wire and rod in soil over a long period
>> of time due to chemical reaction between the soil, wire, clamp and rod.
>> Cadweld solves this problem by isolating the chemical action to external
>> parts of the connection.
>>
>> 73, Keith NM5G
>>
>> -----Original Message-----
>> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Bill
>> Turner
>> Sent: Wednesday, October 22, 2014 10:49 PM
>> To: Towertalk
>> Subject: [TowerTalk] Cadweld vs clamps
>>
>> I watched the video about Cadweld and read the info, but I'm still not
>> convinced it is better than old fashioned ground rod clamps.
>>
>> Comments?
>>
>> 73, Bill W6WRT
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