jordningsanläggning

A jordningsanläggning, often translated as an earthing system or grounding system, is a crucial electrical safety component. Its primary function is to connect the exposed conductive parts of an electrical installation to the earth. This connection ensures that in the event of a fault, such as a live wire touching a metal casing, the fault current is safely diverted to the ground. This prevents dangerous voltages from appearing on surfaces that people might touch, thereby reducing the risk of electric shock.

The core elements of a jordningsanläggning include the earth electrode (jordspett or jordplatta), which is placed in direct contact with the earth, and the earth conductor (skyddsjordledare), which connects the electrical installation's protective earth terminals to the earth electrode. The effectiveness of the jordningsanläggning depends on several factors, including the resistivity of the soil, the size and depth of the earth electrode, and the quality of the connections.

Properly designed and maintained jordningsanläggningar are essential for the reliable operation of electrical equipment and for the safety of individuals. They play a vital role in protecting against both direct and indirect contact with live electrical parts. In many countries, the installation and testing of jordningsanläggningar are regulated by national electrical codes and standards to ensure a minimum level of safety.