ICC Residential Electrical Inspectors Practice Exam

A grounded service-supplied alternating current system shall have an unspliced ___________ to connect the equipment grounding conductor and the service disconnect enclosure to the grounded conductor.

1. Main bonding jumper

2. Grounding electrode conductor

3. Neutral conductor

4. Equipment grounding jumper

The correct answer is: Main bonding jumper

In a grounded service-supplied alternating current system, the requirement for a connection between the grounded conductor (neutral) and the equipment grounding conductor is fulfilled by the main bonding jumper. This component is essential in establishing a clear electrical connection that allows for effective grounding and ensures safety by preventing electrical shock and equipment damage. The main bonding jumper provides a path for fault current to return to the source, which facilitates the operation of overcurrent devices in the event of a fault. It forms a critical bond that ties the neutral conductor to the ground, thereby ensuring that all equipment is effectively grounded and that there is a common reference point for the electrical system. In this context, other options serve different functions: - A grounding electrode conductor is involved in connecting the grounding system to the grounding electrodes, which is vital for establishing a connection to the earth but does not directly serve to connect the equipment grounding conductor to the service disconnect. - The neutral conductor is the grounded conductor itself but does not perform the role of bonding jumpers in this context. - An equipment grounding jumper provides a path for ground fault current but is used in applications that involve remote equipment or connections, rather than the main connection necessary at the service disconnect. Thus, the main bonding jumper is specifically intended