Although Copper Bonded Earthing Rods are built to last and are very resistant to corrosion, regular maintenance will ensure strong efficiencies last throughout the product lifespan. If a grounding system is left unmaintained, the earth resistance can increase over time giving inadequate protection or, in some cases, become dangerous! Good maintenance practices for maintaining copper b... https://www.pioneerpowers.com/copper-bonded-earth-rod.php