How should underground service conductors be installed?

Underground service conductors must be installed at a minimum depth of 24 inches to ensure safety and protection against accidental damage. This depth is specified by the NEC to minimize the risk of physical damage when excavation occurs near the service line. Such a requirement helps prevent complications that could arise from a shallow installation, including the risk of cuts or abrasions to the conductors, which could lead to electrical faults or hazards.

Additionally, this depth standard ensures compatibility with the requirements for the type of conductors being installed, as different types of underground services may have varying depth requirements based on environmental conditions and local regulations.

While there are other depths outlined within the NEC for different applications, 24 inches is the generally accepted depth for underground service conductors, making it the appropriate choice here.