Unfit for any load
When installed under streets, highways, roads, alleys, driveways and parking lots, conduit is required to be buried below the surface of the finished grade, or concrete or similar cover, by no less than 24 in. under all circumstances. See 300.5 for installation requirements for conductors rated 600V or less. Also, see Note 1 under Table 300.5 for the definition of: Cover is the shortest distance in