Which section of the NEC specifically addresses equipment requirements for large electrical services?

The section of the NEC that specifically addresses equipment requirements for large electrical services is Article 230. This article outlines the general requirements for services, including the installation of service conductors, service equipment, and the necessary enclosures to ensure safety and compliance with electrical standards.

Article 230 is essential because it provides guidelines on how to safely and efficiently deliver electrical power from the utility supply to the premises' distribution system. This includes specifications on service entrance conductors, the rating and installation of service disconnecting means, and the requirements for protecting the service equipment from environmental factors.

The other articles mentioned relate to different aspects of electrical installations: Article 100 covers definitions, Article 300 discusses general installation requirements, and Article 400 pertains to flexible cords and cables. While these sections are important, they do not focus specifically on the requirements for large electrical service installations, which is why Article 230 is the correct choice for this question.