Feeder or service loads in schools are calculations that also apply to portable classroom buildings.

• A. Calculations that also apply to portable classroom buildings.
• B. Only used for permanent school facilities.
• C. Only applicable to residential buildings.
• D. Irrelevant to portable structures.

Answer: (A)

Feeder and service load calculations are about predicting the maximum electrical demand based on how the space is used and what equipment is installed. In schools, this means accounting for the lighting, receptacles, and mechanical loads that classrooms, offices, and other spaces will demand, and applying the appropriate demand factors and code rules to size the feeders and service.

Portable classroom buildings are still educational occupancies; they’re used for teaching and contain the same kinds of loads—lighting, outlets, heating or cooling, and other equipment. Because the occupancy and its electrical needs are the same, the same sizing approach applies. The goal is to ensure the electrical service can safely handle peak demand whether the building is a permanent structure or a temporary portable classroom.

So, these load calculations aren’t limited to permanent facilities, they’re not exclusive to residential buildings, and they’re relevant to portable structures as part of proper electrical design and code compliance.