Yes, the oxidation should be cleaned off before attaching bus bar. Schneider Electric Services uses denatured alcohol and scotch-brite if needed, making sure not to go to hard on it so you don't remove the tin or silver plating. This comprehensive guide will provide you with effective busbar maintenance and repair methods to enhance safety, improve efficiency, and extend the lifespan of your electrical system. How to clean electrical copper busbar? Let's explore cleaning methods, selection guide, specification, benefits, applications, recommend supplier for electric copper busbar.