A copper bonded earthing rod is an essential part of electrical grounding systems, with the purpose of offering a safe and low-resistance route for fault currents and lightning surges to be dissipated into the ground. Such rods are manufactured by molecularly bonding a high layer of pure electrolytic copper—more than 250 microns—onto a high-tensile, low-carbon steel core. This type of... https://www.pioneerpowers.com/copper-bonded-earth-rod.php