Which of the following is a valid method for generator load data collection?

Generator-operating logs and design notes are critical for understanding generator performance and operational history. These logs provide a comprehensive record of how the generator has been used, including runtime, load levels, maintenance activities, and any issues encountered during operation. Analyzing these logs allows operators to make informed decisions regarding load management, maintenance schedules, and overall efficiency improvements.

The other methods listed, while related to generator management and assessment, do not specifically serve as direct methods for collecting load data. Fuel efficiency analysis assesses performance but does not provide the detailed operational history that logs do. Scheduled inspections focus on ensuring the physical condition and safety of the generator rather than its operational data. Capacity tests determine the maximum output a generator can produce but do so under controlled conditions rather than during regular operation.