I am working on a pre 70s home with a very old QO panel that’s in poor condition. I recently put a new service on the home with a new main panel and have refed the older panel with 1-1-1-3 SER and isolated the neutral from grounding.
Now with that said, who ever previously wired the home wired the grounding type receptacles with old 3 conductor nonmetallic cable with no grounding wire. He landed the black and whites to the neutral bar (when it was still a main panel) and the red to the breakers.
Looking in the sacred text, 250.119 (B) states: “One or more insulated conductors in a multi conductor cable, at the time of installation, shall be permitted to be permanently identified as equipment grounding conductors at each end and at every point where the conductors are accessible by one of the following means…”
So my question is, while I upgrade this old rusty junk panel to a new subpanel, after I go through the whole house and identify the grounding conductor at every point of access, and appropriately terminate them isolated from the grounded conductors with new identification, will I be code compliant? I know it’s not “time of installation,” but the only alternative is to rip out all the old NM and rewire the whole house…Oh, and just to add, it is all copper wiring, no aluminum to worry about.
Thanks!
Now with that said, who ever previously wired the home wired the grounding type receptacles with old 3 conductor nonmetallic cable with no grounding wire. He landed the black and whites to the neutral bar (when it was still a main panel) and the red to the breakers.
Looking in the sacred text, 250.119 (B) states: “One or more insulated conductors in a multi conductor cable, at the time of installation, shall be permitted to be permanently identified as equipment grounding conductors at each end and at every point where the conductors are accessible by one of the following means…”
So my question is, while I upgrade this old rusty junk panel to a new subpanel, after I go through the whole house and identify the grounding conductor at every point of access, and appropriately terminate them isolated from the grounded conductors with new identification, will I be code compliant? I know it’s not “time of installation,” but the only alternative is to rip out all the old NM and rewire the whole house…Oh, and just to add, it is all copper wiring, no aluminum to worry about.
Thanks!