Is it permissible to bury Rigid Metal Conduit (RMC)?

Burying Rigid Metal Conduit (RMC) is permissible under certain conditions. RMC is designed to provide physical protection for electrical conductors and is robust enough to handle underground installation. When using RMC underground, it is essential to install it in accordance with the National Electrical Code (NEC) guidelines, which may include considerations for depth and protective measures from physical damage.

For instance, the conduit must typically be buried at a minimum depth to protect from external forces, and it should be adequately supported at intervals as specified by the NEC. The material itself, being metal, provides good protection from environmental factors, making RMC a suitable choice for underground use compared to other types of conduits.

This answer reflects the understanding that while RMC can be buried, compliance with specific installation guidelines is crucial to ensure its efficacy and safety in safeguarding electrical installations.