The rated ampacity of an individual outlet should be how it compares to the amperage rating of the branch circuit?

• A. Greater than
• B. Less than
• C. Equal to
• D. Dependent on the load type

Answer: (C)

The rated ampacity of an individual outlet should be equal to the amperage rating of the branch circuit to ensure safe and efficient operation. This principle is crucial because it ensures that the outlet can handle the maximum current that the branch circuit is designed to provide without overheating or causing a safety hazard.

If an outlet's ampacity is lower than the branch circuit’s rating, there’s a risk of overloading the outlet, which could lead to potential fire hazards or damage to connected devices. Conversely, if the outlet's ampacity is higher, while it may seem acceptable, it can lead to situations where the branch circuit could deliver more current than what the outlet was designed to handle effectively.

Thus, having the outlet's ampacity equal to the branch circuit's rating both ensures compliance with electrical codes and fosters safety in electrical installations, preventing overloads or other issues that could arise from improper ratings.