Hint: Naughty NM cable installation
I spotted this uncovered box while camping at a campground in New England. Upon closer examination, I realized that the cables pulled through this box and raceways are actually NM cables. Installing NM cables in wet locations such as these aboveground raceways is prohibited by Sec. 334.12(B)(4). These two rigid PVC conduits continued down the side of the building and into the ground where they run underground and then emerge nearby to feed some receptacle outlets. Using NM cables for an underground installation is not specifically prohibited by Sec. 334.12, however, since the Art. 100 definition of wet location includes underground locations, NM cables are not permitted to be installed underground. The lack of a box cover violates Sec. 314.25. Neither conduit complies with Sec. 300.12 since they are not continuous between the boxes at each end of the raceways.