When installing PVC conduit underground without concrete cover, what is the minimum required cover?

The minimum required cover for PVC conduit installed underground without concrete cover is 18 inches. This requirement is established to protect the conduit from physical damage that could occur due to surface activities, such as digging or heavy loads. An 18-inch cover provides a safety buffer that helps to safeguard the conduit from potential impacts and ensures that it remains buried at a depth that reduces the risk of exposure to moisture and environmental factors.

Additionally, this standard is in line with the National Electrical Code (NEC) guidelines, which emphasize the importance of burying electrical installations to avoid hazardous situations and to maintain the integrity of the electrical system. By adhering to the 18-inch requirement, installers can ensure both safety and compliance with regulatory standards.