What does MBJ/SBJ stand for?

The term MBJ/SBJ refers to Main Bonding Jumper and Secondary Bonding Jumper. The Main Bonding Jumper is a critical component in electrical systems, as it connects the grounded (neutral) conductor to the grounding electrode system. This connection helps to establish a reference point for the entire electrical system, ensuring safety and effective operation by minimizing voltage differences during fault conditions.

The Secondary Bonding Jumper serves a similar function but is typically used for secondary circuits or systems where multiple grounding points are required to ensure system integrity. It helps maintain grounding consistency across different parts of the electrical installation, thereby improving safety and performance.

Understanding the specific terms used in electrical bonding is crucial for technicians to ensure compliance with safety codes and effective system design. The other options do not accurately describe the bonding jumpers as they refer to incorrect definitions or unrelated components in electrical systems, which might lead to confusion without the appropriate context.