What is the minimum depth required from the top of the conduit to the top of the sidewalk for a flush-mounted well light?

The minimum depth required from the top of the conduit to the top of the sidewalk for a flush-mounted well light is established to ensure adequate protection against physical damage and to meet safety codes. A depth of 4 inches provides a sufficient buffer to prevent accidental contact or disruption to the electrical conduit, while also allowing the well light to function effectively without being obstructed.

This depth supports compliance with the National Electrical Code (NEC) and similar regulations that are designed to safeguard both the installation and the users. Ensuring that the conduit is set at this depth minimizes risks associated with pedestrian traffic or surface-level activities above the installation.

The other options suggest a greater depth, which while providing additional safety, exceed the minimum requirement as specified by standard guidelines. The goal is to strike a balance between safety, functionality, and compliance, which is why 4 inches is recognized as appropriate for this application.