A copper bonded earthing rod is a dedicated grounding electrode used to safely drain electrical faults, surges, and lightning currents into the ground for the safety of persons, equipment, and infrastructure. The rods are produced by molecularly bonding a dense coating of pure copper—usually 99.9% electrolytic copper—onto a high-tensile, low-carbon steel core by an advanced electropla... https://www.pioneerpowers.com/copper-bonded-earth-rod.php