Bill,
You realize I'm shooting in the dark here. I do NO residential work, and literally all my commercial is "rip out all existing and start over". That is the way it has been enforced in this area though, if you open it, it is visible, and does not meet the currently enforced code, it will before you close it up again, including boxes, wiring method, etc..
I have seen the ruling on aluminum branch wiring years ago, I know you can't buy al romex, but Hey, before it comes up in my life, where does it say it is outlawed?
