HOLT Electricians Practice Exam

What must all panelboard circuit breaker modifications display?

1. The date of modification

2. A clear identification of purpose or use

3. Certified inspection labels

4. The manufacturer's name

The correct answer is: A clear identification of purpose or use

All panelboard circuit breaker modifications must display a clear identification of purpose or use to ensure that anyone interacting with the electrical system can readily understand the function of each breaker. This is critical for safety and maintenance purposes, as it allows electricians and other users to quickly identify the circuits associated with specific equipment or areas within the facility. Clear identification helps prevent accidental disconnection of vital circuits, which could lead to equipment damage, safety hazards, or operational interruptions. This requirement is a reflection of best practices in electrical safety and organization, ensuring that the system is user-friendly and diminishes the potential for errors during maintenance or inspections.