I just bought 7.5 acres with a 30 x 40 shop that the previous owner was fixing cars in. He wired it himself and pretty sure he didn't get it inspected. This is the feed from the main entering the building through a hole just poked through the tin. The white wire you see snaking off to the right is the feed which is mostly just laying on top of the ground. The black wire was hooked to an air compressor that sat on the pad.