Article 550 relates to which of the following?

Article 550 of the National Electrical Code (NEC) specifically addresses the requirements for mobile homes and manufactured homes. This article provides essential guidelines for the electrical systems in these types of residences, ensuring safety and compliance with standards. It covers aspects such as service equipment, branch circuits, and grounding, which are tailored to the unique characteristics of mobile and manufactured homes.

Understanding Article 550 is crucial for professionals working in residential electrical installations as it helps ensure that mobile homes are equipped with safe and reliable electrical systems. This focus on mobile and manufactured homes distinguishes it from articles related to other types of structures or uses, such as motion picture studios, assembly occupancies, and theater projection rooms, which are covered under different NEC articles.