Which NEC article covers definitions and terminology used throughout the code?

The article that covers definitions and terminology used throughout the NEC (National Electrical Code) is Article 100. This section is crucial because it provides clear definitions for terms and concepts that are referenced in other articles, ensuring that there is a common understanding among electricians, engineers, inspectors, and other professionals working with the code. By providing a standardized vocabulary, Article 100 helps to eliminate confusion and maintain clarity in electrical installations and inspections. This foundation is essential for interpretation and application of other rules within the code.

The other articles mentioned focus on different aspects of electrical code requirements; for example, Article 50 covers design and installation of overhead supply conductors, Article 200 deals with the use of proper conductors and their performance, while Article 300 addresses general wiring methods and requirements. Each of these articles builds on the definitions found in Article 100, which is why it is the cornerstone of the NEC framework.