What is the consequence of terminating aluminum conductors with copper lugs?

Terminating aluminum conductors with copper lugs is considered a violation due to the potential for galvanic corrosion. When different metals come into contact, particularly aluminum and copper, electrochemical reactions can occur, leading to corrosion of the aluminum conductor. This corrosion can create resistance at the connection point, leading to overheating and possible failures in the electrical system.

In standard electrical practices, it is important to ensure compatibility between the conductors and connectors to maintain the integrity and safety of the electrical system. Therefore, proper termination methods must be adhered to, and using appropriate connectors that match the conductor material is a critical component of safe and effective electrical installations.