What is the standard length of rigid metal conduit?

The standard length of rigid metal conduit is indeed typically 10 feet. This length is widely used in electrical installations because it strikes a balance between manageability and coverage for running conduit over various distances in commercial and residential settings. A 10-foot length allows installers to cover longer spans between supports while minimizing the number of joints and connections required, which can enhance the system's reliability and reduce the potential for installation errors.

In contrast, other lengths such as 5 ft, 8 ft, or 12 ft do not match the standard industry practice and might not be as commonly found in stock at supply outlets. Having a standard length helps streamline inventory management for suppliers and ensures that installers are accustomed to handling these lengths, which promotes efficiency and consistency across projects.