What does chapter 9 table 4 concern itself with?

Chapter 9, Table 4 of the National Electrical Code (NEC) specifically addresses raceway provisions. This table provides crucial information about the maximum allowable fill for different raceway types based on their size and the number of conductors they contain. Understanding raceway fill is essential for electrical installation because it ensures safety and compliance with the NEC. Proper raceway fill prevents overheating and allows for proper conductor performance by avoiding overcrowding within the raceway, which can lead to insulation damage or electrical failures.

The focus on raceway provisions in this particular table emphasizes the importance of following guidelines when designing or installing electrical systems. By adhering to these guidelines, electricians can maintain the integrity and safety of electrical installations.