What does Article 645 pertain to?

Article 645 pertains specifically to Information Technology Equipment. This article outlines the requirements for the installation, operation, and maintenance of systems that house IT equipment, including computers, servers, and network devices. The provisions focus on ensuring safety and efficiency within environments housing sensitive electronic equipment, responding to the unique needs of data centers and similar facilities. Understanding Article 645 is crucial for electricians working in or around IT environments, as it includes specific guidelines for raceways, cable trays, grounding, and the management of power distribution, which are vital for the reliable operation of technology infrastructures.

The other options refer to different electrical standards that do not relate to the specific requirements laid out in Article 645. For instance, while manufactured wiring systems and office furnishings have their own respective articles, they do not encompass the comprehensive guidelines aimed at protecting and powering information technology equipment.