What does Article 220 in the NEC discuss?

Article 220 in the National Electrical Code (NEC) specifically addresses branch-circuit, feeder, and service load calculations. This article provides the necessary guidelines and methodologies for accurately determining the expected electrical loads on different parts of an electrical system.

Understanding load calculations is crucial for ensuring that the electrical system is properly sized to handle the demand without overloading circuits or causing potential safety hazards. The calculations detailed in this article cover residential, commercial, and industrial applications, accounting for various factors such as demand factors, diversity, and continuous loads.

Learning and applying the principles outlined in Article 220 help electrical professionals ensure that the systems they design and install operate efficiently and safely under expected load conditions.