Article 90
March 14, 2021
Introduction Purpose. Scope. Code Arrangement. This Code is divided into the intro‐ duction and nine chapters, as shown in Figure 90.3. Chapters 1, 2, 3, and 4 apply generally. Chapters 5, 6, and 7 apply to special occupancies, special equipment, or other special conditions and may supplement or modify the requirements in Chapters 1 through 7 .Chapter 8 covers communications systems and is not… read more »