Need to run a couple circuits underground at a church parking lot for some 400 watt mercury vapor parking lot lights. After the blacktop is trenched open I should be able to run the usual PVC underground and stub them up, either 18 or 24 inches deep (I'll check) without any problem with codes under a driving surface, right? Schedule 40 ok? I've seen too many wrapped ridgid installations still rust out over the years. Ridgid is not riquired under a driveway, is it?
