When copper and aluminum are connected directly without bi-metallic lugs, it can lead to some serious issues—both in terms of performance and safety. At Pioneer Powers International, we really stress the importance of using bi-metallic lugs to ensure reliable connections in systems that involve different metals. 1. Galvanic Corrosion Since copper and aluminum are dissimilar meta... https://www.pioneerpowers.com/bimetallic-lugs-and-connectors.php