Verlängerungsleitung

Verlängerungsleitung, commonly known in English as an extension cord, is a flexible cable that allows electrical devices to be powered at a distance from a mains outlet. The term is used primarily in German-speaking countries and refers to both the cable itself and its associated plugs and receptacles. A standard Verlängerungsleitung typically consists of two or more conductors, a neutral, a live (phase) wire, and a protective ground (earth) conductor. The cable is encased in an insulating jacket to prevent electrical shock and is often shielded to reduce electromagnetic interference.

These cords are available in various lengths, from a few meters to over twenty metres, and in a range of power ratings that correspond to the voltage and current capacity of the mains supply—commonly 230 V, 50 Hz in Europe. They are used in residential, commercial, industrial, and temporary event settings, allowing the convenient placement of power tools, lamps, kitchen appliances, and audiovisual equipment.

Safety standards for Verlängerungsleitungen are governed by national electrical regulations, such as Germany’s DIN VDE 0298-7, which specify maximum permissible current, cable thickness, and the need for polarity protection. Overloading an extension cord can cause overheating and pose fire hazards, so installers and users are advised to match the cord’s rating to the load and to avoid daisy‑chaining multiple cords. Proper grounding, the use of double‑pole circuit breakers, and continuous inspection for wear are recommended practices.