What is the connection between the grounded circuit conductor and the equipment grounding conductor at the service called?

The connection between the grounded circuit conductor and the equipment grounding conductor at the service is known as the main bonding jumper. This connection is crucial because it provides a necessary bond between the neutral conductor and the ground, ensuring both safety and proper operation of electrical systems.

When the main bonding jumper is installed, it helps to maintain the same potential between the neutral and ground conductors, which reduces the risk of electrical shock and ensures that any fault current has a defined path back to the source. This setup is essential for the effective operation of overcurrent devices, as well as for the overall safety of the electrical installation.

The other terms relate to different aspects of electrical systems. A grounding electrode refers to the physical connection to the earth, which is a part of grounding systems but not the specific bonding connection in question. Service ground refers more broadly to the grounding of the service entrance equipment and not to the bond between the grounded circuit conductor and the equipment grounding conductor specifically. A ground fault interrupter is a safety device that cuts off power when it detects an imbalance in electrical current, primarily used for personal protection against electric shock, but it is not directly related to the bonding connection itself.