What aspect does Article 220 cover?

Article 220 of the National Electrical Code (NEC) specifically addresses load calculations for electrical circuits. This encompasses the methodologies and requirements for calculating the expected load on circuits to ensure that electrical systems are designed safely and effectively. Accurate load calculations are crucial for determining the appropriate sizing of conductors, overcurrent protection devices, and other components of electrical systems.

By focusing on circuit load calculations, Article 220 helps ensure the electrical system can handle peak demand while minimizing the risk of overloads. It takes into account different types of loads, including residential, commercial, and industrial applications, and provides guidelines for calculating both continuous and non-continuous loads. This is vital for electricians to ensure compliance with safety standards and for the overall performance of the electrical system.

The other options focus on different aspects of electrical installations: grounding and bonding are covered under a separate article dedicated to safety of grounding systems; feeder specifications are outlined in articles regarding conductors and feeders; and service requirements have their own articles that detail specifications for service entrance and connections.