What type of jumper is used to bond sections of rigid metal raceway interrupted by an expansion joint?

The correct choice of an equipment bonding jumper is essential in scenarios where rigid metal raceways are interrupted by an expansion joint. This type of jumper is specifically designed to ensure electrical continuity and safety between sections of metal raceways that may be separated due to the expansion joint.

When installing electrical systems, maintaining a continuous grounding path is critical for protecting equipment and ensuring user safety. The equipment bonding jumper effectively connects different sections of raceway, allowing for the proper grounding of electrical equipment while accommodating mechanical movement due to expansion or contraction caused by temperature changes.

Other options, while related, do not serve the same specific purpose. A grounding jumper is more general and may not address the particular requirements regarding the bond between raceways. An electrical jumper typically refers to a conductor that connects points in a circuit but doesn't specifically address grounding. A structural jumper would relate more to physical structural needs rather than electrical safety. Therefore, using an equipment bonding jumper in this context is the correct choice for maintaining safe and effective electrical installations across interrupted raceway sections.