How deep must Type PVC conduit and Type RTRC conduit be surrounded by concrete?

The correct surrounding depth for Type PVC conduit and Type RTRC conduit being surrounded by concrete is two inches. This standard is essential for protecting the conduit from physical damage and ensuring structural integrity. Encasing the conduit in this manner provides adequate support while allowing for thermal expansion and contraction of the materials, as well as other environmental factors that may affect the installation.

By providing a two-inch cover, it also meets electrical code requirements that aim to prevent exposure to damaging conditions, ensuring that the electrical system remains safe and functional over time. This practice also allows for easier access to future repairs or modifications while maintaining the durability expected in electrical installations.