How is the total load on the lighter calculated?

The total load on the lighter is calculated by considering both its share of the 3-phase load and its share of the single-phase load. This is important because in many electrical systems, loads may not be uniformly distributed across phases, and individual components or devices can draw power differently based on their design and operational needs.

By summing both loads, you ensure that you account for all power being utilized by the system, providing an accurate total load assessment. This comprehensive approach is essential for evaluating the overall performance and safety of the electrical system, as it helps in determining the proper sizing of equipment, ensuring stability, and preventing overloads.

Considering this option reflects an understanding of how various loads can interact and impact the overall performance of electrical systems, which is a critical aspect of electrical engineering and apprenticeship training.