Which of the following is NOT covered under the NEC articles mentioned?

The inclusion of specific topics under the National Electrical Code (NEC) is based on the standards and regulations that govern electrical installations in the United States. Building wire, while critical in many applications, is generally not covered in the same way as other items mentioned, primarily because it does not relate to specialized installations or dedicated functions within the electrical infrastructure.

Instrumentation Tray Cable and Communications Circuits, for instance, are designed for particular functions and have specific requirements outlined in the NEC, addressing aspects of safety, efficiency, and appropriate usage. Similarly, Fire Alarm Systems are explicitly discussed to ensure that they meet safety codes and performance standards.

In contrast, building wire is typically aligned with broader rules governing wiring methods and material usage, rather than having specialized provisions dedicated to those unique operational contexts. This distinction highlights the NEC's approach to ensuring that highly specialized electrical applications are addressed with focused guidelines, while general wiring practices are covered under more general provisions of electrical installations.