A quick google shows these at over $60 a piece. Doing several of them gets
prohibitively expensive.
The type that use a hydro crimping tool...the tool is north of $3k ! This is
why hams don't use these. It makes Cadwelds look downright affordable.
Chris
KF7P
On Oct 23, 2014, at 6:34 , Jim Lux wrote:
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@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@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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