Which article specifically addresses information technology equipment?

The correct answer is Article 645, which specifically pertains to information technology equipment. This article outlines the requirements for the installation, operation, and maintenance of information technology equipment in various environments. Information technology equipment includes servers, computers, and networking devices that are often used in data centers and similar facilities.

Article 645 provides guidelines related to power distribution, wiring methods, grounding, bonding, and other safety considerations that ensure the equipment operates efficiently and safely. Understanding these requirements is crucial for preventing electrical hazards and ensuring the integrity of data transmission and processing.

While other articles, such as Article 647, address telecommunication and signaling systems, and Article 640 focuses on audio and visual signaling systems, they do not cover the scope of information technology equipment as comprehensively as Article 645 does. Thus, Article 645 is the proper reference for questions concerning standards and practices related to this type of equipment.