An earthing system is a safety mechanism used in electrical installations to prevent electric shock and equipment damage. It connects electrical systems to the ground, allowing excess electricity to safely dissipate into the earth. This is crucial for protecting people and property from electrical faults. There are different types of earthing systems, including TT, TN, and IT systems, each with specific configurations and applications. Proper earthing ensures that electrical devices operate safely and efficiently, reducing the risk of electrical hazards in homes, industries, and public spaces.