I inspected a sub panel that was installed next to the main electric service panel. The home was constructed in 1983.
The sub panel did not have any neutral or ground wires attached to the neutral bus or ground bus. The bus bars were installed and separated in the sub panel. Only a green ground wire was attached to the ground bus in the sub panel. The neutral and ground wires for the sub panel were attached to the main electric service panel bus. This I have never observed before. Is this acceptable?
Also, a ground wire and neutral wire were attached under one screw in the main electric panel. Should they be separated and installed under their own screw?