What is the supply-side bonding jumper responsible for?

The supply-side bonding jumper is primarily responsible for ensuring electrical conductivity between connected metal parts. This component plays a critical role in maintaining a safe and effective ground system within an electrical installation. By providing a low-resistance path for electrical currents, it helps to prevent hazardous voltage differences that could lead to electrical shock or fire.

The supply-side bonding jumper connects various metallic sections of the electrical system, such as service equipment, enclosures, and grounding electrodes, thereby making sure that they are at the same electrical potential. This connection helps facilitate the safe operation of electrical systems by reducing the risk of hazardous voltage due to potential faults.

The other options do not accurately describe the function of the supply-side bonding jumper. Grounding the entire system, while important, is a broader task that encompasses multiple components. Connecting the load to the circuit refers to a different aspect of electrical systems and their operational dynamics. Regulating voltage levels relates to the roles of other components, such as transformers or voltage regulators, rather than the supply-side bonding jumper specifically.