The National Electrical Code allows rigid PVC conduit to do all of the following except for?

Rigid PVC conduit is a popular choice in electrical installations due to its lightweight, corrosion-resistant properties and ease of handling. However, it is essential to understand its limitations as outlined by the National Electrical Code (NEC).

The option regarding the support of lighting fixtures is not permissible because PVC conduit lacks the structural strength required to safely hold the weight of lighting fixtures, especially in outdoor or damp environments. The code specifies that lighting fixtures must typically be supported by a more robust support system or directly attached to a building structure to ensure safety and reliability.

On the other hand, PVC conduit is designed for various applications, including being buried underground where it can protect wiring from physical damage and moisture. It's also suitable for indoor use, where it maintains a fire-resistance rating and prevents corrosion. Additionally, while supporting raceways is generally allowed when done correctly, it emphasizes that the conduit must not serve as a primary support system for heavier fixtures, which aligns with the code’s focus on safety standards.

Understanding these guidelines helps ensure that installations are safe, effective, and compliant with the prevailing standards in electrical work.