What is the primary function of a bonding jumper in flexible conduit installations longer than six feet?

The primary function of a bonding jumper in flexible conduit installations longer than six feet is to maintain the continuity of the grounding path. In electrical systems, grounding is crucial for safety, as it provides a low-resistance path for fault currents to reach the ground. This helps prevent electric shocks and reduces the risk of electrical fires.

In flexible conduit installations, if the conduit runs longer than six feet, the bonding jumper ensures that there is a solid and continuous ground connection throughout the entire length of the conduit. This is essential because longer runs can introduce resistance or break in the grounding path, potentially leading to unsafe conditions.

Thus, the bonding jumper directly supports the integrity of the electrical system's grounding by ensuring that all conductive parts remain interconnected, ensuring that if a fault occurs, the current has a reliable path to ground, protecting both people and equipment.