Which of the following is NOT a requirement for the load calculations of a feeder?

The choice stating that the calculations of a feeder must be higher than the expected load is not a requirement for load calculations, making it the correct selection in this context.

Load calculations are designed to ensure that the feeder can handle the expected electrical demand safely and efficiently. The feeder size and capacity should match the anticipated load conditions rather than exceed them unnecessarily. This approach is important because oversized feeders can be uneconomical and may not reflect practical application or code compliance.

On the other hand, accounting for demand factors is essential because it allows for adjustments based on expected usage patterns, ensuring that the calculations reflect realistic operating conditions. Following NEC guidelines is crucial since they establish safety standards and best practices for electrical installations, while including continuous loads in calculations is important to accommodate sustained usage that exceeds certain time frames, which could affect the overall capacity of the system. Each of these elements contributes to the reliability and safety of the electrical distribution system.