What is the name of the bonding jumper routed with feeder conductors from the transformer to the equipment grounding bar in the panel?

The bonding jumper routed with feeder conductors from the transformer to the equipment grounding bar in the panel is referred to as the supply-side bonding jumper. This jumper serves a crucial role in the grounding system of the electrical installation.

The supply-side bonding jumper connects the transformer to the grounding system at the service equipment. Its primary function is to ensure that electrical systems maintain a low-resistance path for fault currents, enhancing system safety and stability. By providing this connection, any potential difference between the transformer and the panel equipment is mitigated, reducing the risk of electrical shock or equipment damage.

In contrast, options such as the load-side bonding jumper refer to connections made after the service equipment or within branch circuits, while the system bonding jumper is typically associated with connecting the neutral conductor to the ground at specific points in the system. The equipment bonding jumper, on the other hand, is used to connect metal parts of different equipment to the grounding system but does not pertain specifically to the connection facilitated by feeder conductors from the transformer to the panel.

Understanding the role of the supply-side bonding jumper is essential for anyone working with electrical systems to ensure proper grounding practices and compliance with codes and standards.