Maintenance of earthing involves regularly inspecting and maintaining the grounding system to ensure its continued effectiveness in providing a safe path for electrical fault currents. This includes checking the earth electrodes, conductors, and connections for signs of corrosion, wear, or damage. The resistance of the earthing system should be tested periodically to confirm it meets the required standards (typically less than 1 ohm). If issues such as loose connections or high resistance are detected, repairs or replacements should be made promptly. Regular cleaning, tightening of connections, and replacement of corroded parts help ensure the earthing system remains reliable and safe.