The AM11 earthing terminal is used, for example, for the potential equalization of air-conditioning and ventilation ducts. The earthing terminal has a single 10 mm² Cu-terminal. The terminal bar is made of tinned copper. It is affixed with two pull rivets (pop-rivets), Ø 3,2 mm, in the air-conditioning or ventilation duct and the protective lead is connected to the connector attachment point. The conductors having a cross-section of Cu 1,5 - 10 mm² are suited to a conductor connector equipped with conductor protection.