Which chapter contains tables that specify the properties of conductors in the NEC?

The correct choice pertains to Chapter 9 of the National Electrical Code (NEC), which specifically includes various tables that outline the properties of conductors. This chapter is vital for electricians as it provides essential information such as conductor properties, including ampacity, minimum conductor sizes, and the effects of temperature on conductor performance.

Understanding these tables is crucial for ensuring safe electrical installations and compliance with the code, as they guide electricians in selecting the appropriate conductors based on the electrical load and environmental conditions. The tables in Chapter 9 are organized to present standardized data, making it easier for professionals to reference and apply this information during their work.

The importance of this chapter cannot be overstated, as it acts as a foundational resource for practical electrical design and installation decisions.