A supply-side bonding jumper is installed only at which location?

A supply-side bonding jumper is a critical component in grounding and bonding that is installed at the service location. This is because it ensures that the grounding systems of the supply side (utility) and the service equipment are electrically connected, which is essential for the safety and effective operation of electrical systems. This connection helps limit potentials between conductive parts and provides a path for fault currents to help protect equipment and personnel.

Having the bonding jumper at the service location promotes the effectiveness of grounding by reducing the risk of voltage differences that could occur between various parts of the electrical system. This strategic placement at the service equipment allows for the necessary grounding reference and ensures compliance with safety regulations.

While meters, outlet locations, and panelboards are critical points in an electrical system, they do not serve as the primary site for a supply-side bonding jumper, which is specifically required to be at the service to effectively create a sound electrical grounding system.