90.3 Code Arrangement
Section 90.3 explains the arrangement of the Code and it explains that the Code is divided into the introduction and nine chapters.
Chapters 1, 2, 3, and 4 of the NEC apply to all installations and Chapters 5, 6, and 7 apply to special occupancies, special equipment, or other special conditions. Chapters 5, 6 and 7 can supplement or modify the requirements contained in Chapters 1 through 4.
Chapter 8 covers communications systems such as telephone, antenna wiring, and coaxial cables. These systems are not subject to the requirements of Chapters 1–7 except where there is a specific reference in Chapter 8 to a rule in Chapters 1 through 7.
Intent: The editorial change clarifies that communication systems (Chapter 8) are not required to comply with the requirements of Chapters 1 through 7 without using the term “independent.” It was felt that the term “independent” was being misinterpreted to imply that communications circuits are never covered by the Code.
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