(Several Articles were requested to be reposted – they were originally done before the RSS feed was active)
Once the tower base was in and the tower in place, the grounding project was next up.
With the help of a friend who is a Electrical Contractor the same techniques used to measure the grounding needed at Aircraft Navigation devices was used. Luck was that my soil conditions provided an excellent ground.
I decided on a “Halo” of several ground rods connected by grounding cable, and that cable brought back to the tower frame.
First rod holes were dug and the 8 foot copper-clad grounding rods sunk using a hammer drill.
As the connections would be buried, one-shot Thermonic Welds were used.
Here is a typical welding kit:
The theory is that these welds will not loosen up, and are assured electrical contacts.
Once installed an ignitor was used to fire the weld.
You can leave all the mold parts in place, but wanting to inspect each weld mine were broken off.
Each Weld was fired and inspected.
and the Halo tied back into the tower.
Future Plans include hooking a radial system back into the tower.
Measurments with my contractor friend’s gear have confirmed a great safety ground has been acheived, and the grounding Halo is also functioning as excellent basic RF ground.