The bonding jumper for multiple disconnecting means is located _____.

• A. On the load side of the service disconnect
• B. On the supply side of the service disconnect
• C. At the main grounding point
• D. Directly above the ground rod

Answer: (B)

The bonding jumper for multiple disconnecting means is correctly located on the supply side of the service disconnect. This configuration ensures that all disconnect mechanisms are electrically connected and can function safely during conditions of fault, minimizing the risk of electric shock or fire.

When positioned on the supply side of the service disconnect, the bonding jumper helps to maintain a continuous electrical pathway back to the source. This pathway is crucial for ensuring that any potential fault currents are effectively directed away from the load side and into the grounding system, protecting both the electrical system and individuals working on or near it.

The grounding and bonding principles dictate that all systems connected to a common electrical service must be bonded to ensure they share a common ground reference, preventing differences in potential that could lead to dangerous situations. Thus, having the bonding jumper on the supply side is essential for maintaining proper grounding and safety across multiple disconnecting means.