ABYC Marine Electrical Practice Exam

Tags placed on a conductor by a technician should contain which of the following?

1. The technician's name

2. Date of installation

3. AC or DC designation

4. Type of conductor

The correct answer is: AC or DC designation

The inclusion of the AC or DC designation on tags placed on a conductor is crucial for supporting safe and effective electrical practices. This information helps anyone working with or around the electrical system to identify the type of current the conductor is carrying. Knowing whether the system operates on alternating current (AC) or direct current (DC) is essential for a number of reasons, including understanding the potential hazards involved, troubleshooting, and conducting maintenance or repairs. AC and DC systems behave differently in terms of voltage, current flow, and safety concerns, which can impact the methodology applied during servicing. For instance, AC systems can produce voltage spikes and increase the risk of electric arcs during disconnection, while DC systems typically maintain a constant flow of current. This differentiation is critical for any technician or individual interacting with the system and underscores the importance of clear labeling. While other options, such as the technician's name, date of installation, or type of conductor, can certainly provide valuable information, knowing whether the conductor is connected to an AC or DC system is paramount for safety and operation.