Yes, bi-metallic lugs are made weather resistant and can be used both indoors and outdoors. They have strong construction and are made from high-purity aluminium and copper, which are then friction weld-joined together to give them the strength to support a variety of temperatures as well as adverse weather conditions. Most bi-metallic lugs have an operating temperature rating of anyw... https://www.pioneerpowers.com/bimetallic-lugs-and-connectors.php