Which loads are explicitly included in Article 220 calculations?

• A. Branch-circuit loads, feeder loads, and service loads.
• B. Lighting loads only.
• C. Motor loads only.
• D. Heating loads only.

Answer: (A)

Article 220 calculations size the service by accounting for the loads the service must supply, organized into three categories: branch-circuit loads, feeder loads, and service loads. Branch-circuit loads cover everything on branch circuits—lighting, receptacles, and appliances connected to those circuits. Feeder loads are the loads on feeders from the service to distribution equipment. The service load is the total demand the service equipment must handle, after applying any applicable demand factors to the branch-circuit and feeder portions. The other options are too narrow because they focus on a single load type (like lighting, motors, or heating); those loads are included within the broader branch-circuit or feeder/service totals. So the best answer is the one that names all three categories explicitly.