Article 230 is primarily concerned with which of the following?

Article 230 of the National Electrical Code (NEC) focuses on services, which pertains to the incoming electrical supply and its connection to a building or structure. This article outlines the requirements for service equipment, including service conductors, service disconnects, and overcurrent protection for the services that provide electricity to residential, commercial, and industrial buildings.

The section defines how to properly install service entrance conductors and relates to the adequacy of the service provided, ensuring that it meets safety standards and can handle the load demands of the structure. It covers aspects such as service-entrance wiring methods, grounding requirements specific to services, and the installation of service equipment.

In this context, grounding and bonding, feeders, and definitions are important topics within the NEC, but they fall under other articles. Grounding and bonding are primarily addressed in Article 250, while feeders are discussed in Article 215. Definitions are covered in Article 100. Therefore, the main focus of Article 230 is distinctly centered around electrical services, making it the most relevant choice.