Can't get a straight answer on this one it seems like so many people use rules of thumb or take what someone else told them as "the code" . I have an 86 meter service to install in an apartment. all the meters are in the basement along with the main switch. All of the apartments are fed with sub panels. I would like to feed them with Aluminum SER. Inspector says we must use copper after the main switch. I cant find that in the NEC or the NYS residential code. Any thoughts. What do you do in your state???
