What is the maximum allowable distance between conduit supports according to NEC?

The maximum allowable distance between conduit supports for rigid conduit, according to the National Electrical Code (NEC), is indeed 10 feet. This standard is established to ensure that the conduit remains securely in place, minimizing movement and stress on both the conduit and the wiring inside. Proper support helps prevent damage to the conduit and the electrical insulation, reducing the risk of electrical faults or failures.

Regular intervals of support are crucial for maintaining the integrity of the installation, especially in areas subject to movement or external forces. While the NEC does have different support requirements for various types of conduit, the 10-foot interval for rigid conduit ensures a balance between structural integrity and ease of installation.