Which Table 300.5 row addresses cover requirements for underground conduit located in airport runways and adjacent areas where trespassing prohibited?

• A. All locations not specified below
• B. Under a building
• C. Under streets, highways, roads, alleys, driveways, and parking lots
• D. In or under airport runways, including adjacent areas where trespassing prohibited

Answer: (D)

Table 300.5 organizes installation requirements by where the raceway is located, and the key idea is that airport runway areas with restricted access have their own row. When underground conduit sits in an airport runway and in adjacent areas where trespassing is prohibited, that specific row applies because airports enforce heightened safety and security rules. These areas require protections and access controls to prevent interference with runway operations and to safeguard workers and the public. Other locations, like under a building or under streets, have their own rows for their particular conditions, and a general “all locations not specified below” approach would not address the specialized needs of a restricted-airport environment.