Hovedjordingspunktet

Hovedjordingspunktet, or the main earthing terminal (MET), is a crucial component in electrical safety systems. It serves as the central connection point for all protective earth conductors within a building or installation. The MET is designed to provide a low-impedance path to earth for fault currents, which helps to prevent dangerous voltage build-up on metallic parts of electrical equipment. In the event of a fault, such as a live wire touching a metal casing, the MET ensures that the fault current can flow safely to the ground, thereby tripping protective devices like circuit breakers or fuses and disconnecting the power supply. This significantly reduces the risk of electric shock to individuals who might come into contact with the faulty equipment. The MET is typically located near the main incoming electrical supply. It is essential that the MET is properly installed and maintained by qualified personnel to guarantee its effectiveness. Its installation is governed by electrical safety regulations and standards, ensuring that all earthing connections are robust and reliable. Proper earthing, with the MET at its core, is fundamental to preventing electrical hazards and ensuring the safety of persons and property.