82angelfan
Member
- Location
- Hesperia, Ca
My ERCCS contractor is saying the small bus bar in my nema 3R can has to be copper.
I have a #4 copper from mast to 3R can, aluminum bus. Then a #4 from aluminum bus to copper bus in IDF room. Then #4 to ERCCS boxes. Will inspector ding me on the aluminum bus bar per NFPA 780?
I don't have that code book
I have a #4 copper from mast to 3R can, aluminum bus. Then a #4 from aluminum bus to copper bus in IDF room. Then #4 to ERCCS boxes. Will inspector ding me on the aluminum bus bar per NFPA 780?
I don't have that code book