What type of conduit is used to accommodate clearance requirements for service conductors?

Rigid metal conduit (RMC) is the preferred type of conduit used to accommodate clearance requirements for service conductors due to its strength and durability. RMC provides a robust protection for electrical conductors that must meet specific height and distance requirements as outlined in the National Electrical Code (NEC).

The NEC specifies minimum clearances for service conductors above ground or in areas where they may be subjected to physical contact or damage. Rigid metal conduit is capable of withstanding external forces, such as those that may occur due to impacts or environmental conditions, ensuring that the service conductors remain safely protected.

In contrast, plastic conduit, flexible conduit, and PVC conduit may not offer the same level of physical protection and are typically used in different applications. For instance, plastic and PVC conduits are more suitable for indoor applications where exposure to physical damage is minimal, while flexible conduit is often utilized in areas where bends and adjustments are needed. Therefore, when it comes to adhering to the stringent clearance requirements for service conductors, rigid metal conduit is the most reliable choice.