How deep is the underground conduit for the Veterinary Center's bollard light supposed to be installed below the finished grade?

The installation depth for underground conduit is guided by the National Electrical Code (NEC) and local amendments, which are critical for ensuring safety and proper functionality. Generally, the requirement for direct burial conduits such as PVC and rigid metal is a minimum depth of 24 inches below finished grade for locations that may be subject to surface vehicular traffic.

In the case of bollard lights, which can be in areas with potential pedestrian or vehicle interaction, adhering to the 24-inch standard helps protect the conduit from accidental damage. This depth provides sufficient coverage to avoid exposure from shifting soil, frost, or other environmental factors that could lead to corrosion or physical injury to the electrical wiring.

Therefore, specifying an installation depth of 24 inches ensures that both the electrical installation complies with safety standards and that it is robust enough to withstand the conditions of the installed location, ultimately leading to a reliable and safe lighting solution for the Veterinary Center.