I am remodeling a house and the partially unfinished attic has old ungrounded, 2 wire wiring. There are 2 circuits. There is a finished bedroom with one circuit on 3 walls, and a second on the 4th wall. The 2nd circuit extends out into a hallway area and then stops. I want to extend that wiring into the other side of the attic to make another bedroom and I want it grounded. I already fished a ground wire from the fuse box up to the end of the line on the 2nd circuit. (I cannot get it to the beginning of the line as there is a chimney and shed roof and a whole bunch of ugly over there).
My question is multipart. Can I start the ground there, or do I have to go back and ground the previous outlets on the circuit ? (it is wood paneling, not drywall in the room, so I could take it off, albeit a big pain in the arse) And can I try to use the same ground on the outlets of the first circuit? Do they have to be in a specific order? Can I extend multiple grounds from one junction box? I know I can use a GFCI at the beginning of the first circuit. But as I understand it, I cannot use them before the ground wire on the second.
Sorry, this question sounds about as confused as I am right now. Believe it or not, I rewired 2 houses. But I gutted them to the studs, so it was easy. And I passed inspections.