Cautions in the Use of Both Copper and Aluminum
1. Copper equipment shall not be used on aluminum roofs, aluminum sidings, or other aluminum surfaces - including bare galvanized steel.
(Use Aluminum Equipment for these).
2. Copper and aluminum conductors shall not be interconnected except with acceptable bimetallic connectors (Order #A-100)
3. Aluminum equipment shall not be used underground.
4. Aluminum equipment shall not be used on copper roofing or other copper surfaces.