Barn A contains the main panel. Barn B has a subpanel fed from Barn A via (3) 2-0 aluminum conductors, 2 hot and 1 neutral, with a 60amp breaker in the main panel. There is no grounding conductor between the main panel and subpanel. The water line between barns is PVC. Barn B was built in 2000. There is no ground rod in Barn B.
My plans for Barn B include at least one new lighting branch circuit, and a 50 amp RV receptacle (NEMA 14-50r).
- How should the ground wires for the existing and future 120V branches be connected?
- How should the ground wire for the 50 amp RV receptacle be connected?