M3
Member
I have a 1970's home that has all aluminum wiring running through flex conduit, and the flex back then "was and still is" the grounding conductor to the main panel. I know the aluminum is "ok" if it is tied in properly with the use of proper outlets and switches... but I've noticed none of the outlets have grounding ties, and many of them are not even in contact with metal junction boxes (except the screws), thus cutting down on the grounding capability. I've also seen that new flex conduit is now marked "ok for grounding in uses of 6' or less.
My question is: Has the material changed over the years making it only good as a ground for up to 6'?
Secondly: What if I want to change out the aluminum wiring (potential buyers are leary of it); does the NEC state that a grounding wire has to be pulled through the system or can I just pull copper neutral and hot wires and tie in ground leads to the metal boxes?
Any information would be helpful.
My question is: Has the material changed over the years making it only good as a ground for up to 6'?
Secondly: What if I want to change out the aluminum wiring (potential buyers are leary of it); does the NEC state that a grounding wire has to be pulled through the system or can I just pull copper neutral and hot wires and tie in ground leads to the metal boxes?
Any information would be helpful.