Inspection of the main panel. I did not find a main panel ground at the bus, but there is a small ground connected to the box at the bottom. I am assuming it is a ground, but the wrong size for starters. No ground seen at the water supply or rod the exterior. All the branch grounds are connected to the box as well. I am sure that this is not acceptable. There were 3 receptacles that had open grounds, maybe this explains them. Is there any exception that would allow this configuration? To top it off the seller is an electrician, and I am sure he did the work since this is an upgrade from a previous panel. House was built in 1956.