Extending Length of Ground Rods

[RFEngineer]

Mike Holt has a video where he extends six ground rods, end-over-end for a total length of 48-50 ft. How does one join multiple rods this way? Is there a coupling that joins two sections together? The video shows him making extensive resistance measurements but he skips showing how to join the rods.

We're using Cadweld One Shots to connect #2 wire to our rods, but I really don't want to Cadweld two rods together unless that's the only viable way. A hammer drill is available for driving them into the ground.

Paul

 

[iwire]

You would buy sectional ground rods that screw together with a threaded coupling. http://www.erico.com/products/copper-bonded.asp

I have installed 20' rods per job specification before.

 

[RFEngineer]

You would buy sectional ground rods that screw together with a threaded coupling. http://www.erico.com/products/copper-bonded.asp

I have installed 20' rods per job specification before.

Thanks for the link. That explains it well.

Paul