What is the introduction to the NEC described in?

The introduction to the National Electrical Code (NEC) is described in Article 90. This article serves as an overarching framework that outlines the purpose, scope, and application of the NEC. It establishes fundamental principles that govern the code, detailing how it is to be used for electrical installations across various settings.

Article 90 emphasizes the intent of the NEC to ensure safe electrical installations and to protect both people and property from electrical hazards. It provides guidance on how to properly interpret the code, including information on its enforcement and applicability to different projects. By understanding the content of Article 90, individuals can gain foundational knowledge necessary for navigating the entire code effectively.

In contrast, Chapter 1 generally covers general requirements but does not focus specifically on introductions. Article 500 discusses hazardous locations and their requirements, focusing on specific applications rather than the foundational aspects of the code. Chapter 3 comprises various wiring methods and materials, which are more technical in nature and do not encapsulate the introductory principles outlined in Article 90.