Copper bonded earthing rods are designed for durability and reliability, but several common causes can lead to their failure in grounding systems: While copper-bonded rods are very resistant to corrosion, the copper covering can eventually degrade with long-term exposure to highly acidic, highly alkaline, or salt-rich soils. When the copper covering has broken down, the moisture an... https://www.pioneerpowers.com/copper-bonded-earth-rod.php