Bimetallic lugs are a smart alternative to standard copper or aluminum lugs, especially when it comes to connecting aluminum cables to copper busbars or terminals. When you join aluminum and copper directly, you run into a problem known as galvanic corrosion. This happens because of the different electrochemical potentials of the two metals, particularly when moisture or an electrolyt... https://www.pioneerpowers.com/bimetallic-lugs-and-connectors.php