When connected to 15A or 20A multi-outlet general-purpose branch circuits, which of the following shall not exceed 50% of the branch circuit ampere rating?

• A. Portable tools
• B. Fastened-in-place utilization equipment
• C. General lighting
• D. Small appliances

Answer: (B)

The correct choice is fastened-in-place utilization equipment because it typically has a continuous load aspect that could place a heavy burden on the branch circuit. When connected to a 15A or 20A multi-outlet general-purpose branch circuit, such equipment should not exceed 50% of the branch circuit ampere rating to prevent overloading. This guideline helps ensure safety and proper function of the electrical system by preventing overheating and potential failure due to excessive current draw.

In the context of electrical safety guidelines, portable tools, general lighting, and small appliances may be designed for intermittent use and usually do not pose the same level of risk when exceeding the 50% load threshold. They can often be used together on a branch circuit without concern for permanent installation stress on the circuit itself. Thus, fastened-in-place utilization equipment is singled out due to its consistent demand for power and the implications this demand presents for safe circuit management.