According to the NEC, which chapters apply generally?

The correct answer is that Chapters 1 through 4 of the National Electrical Code (NEC) generally apply to the code's requirements. Chapter 1 outlines the general requirements for the NEC, including its purpose and scope, as well as definitions critical for interpreting the code. Chapter 2 focuses on wiring and protection, providing specific regulations for various systems. Chapter 3 deals with the methods and materials for wiring, specifically outlining the installation requirements for conductors and raceways. Lastly, Chapter 4 addresses equipment for general use.

This foundational framework establishes the basic principles and provisions that apply throughout the rest of the code, making these chapters essential for understanding the overarching rules that govern electrical installations and safety practices. This is why the first four chapters are recognized as generally applicable.

The other chapters, such as 5 through 8 and Chapter 9, cater to specific applications, installations, or standards that do not hold the same general applicability as Chapters 1 through 4, which provide the fundamental guidelines for all electrical installations under the NEC.