jatkojohdin

Jatkojohdin is a flexible electrical cable assembly used to extend the reach of mains power from an outlet to an electrical device. It usually features a plug at one end and a socket at the other, with copper conductors enclosed in a non-conductive sheath. Jatkojohdot are designed for temporary or portable use rather than permanent installation in buildings. They come in various configurations, including single-socket and multi-socket cords, and in lengths from about 1 meter up to 25 meters. The cords are available in different gauges, commonly 1.5 mm² for light loads and 2.5 mm² for higher loads, with rated currents typically 10–16 amps at 230 volts.

Construction and safety: Domestic jatkojohdin are usually insulated with PVC or rubber and comply with European standards for flexible cords. Outdoor or wet environments require cords with weatherproof jackets and appropriate protection from moisture. Extension cords should be used within their rated distance and current to avoid voltage drop, overheating, or fire risk. Users should inspect cords for cuts, exposed conductors, or damaged plugs, avoid running cords under carpets or through doorways, and never daisy-chain multiple extension cords to power high-demand equipment.

See also: extension cord, electrical safety, consumer electronics.