What is found in Chapter 9 of the NEC?

Chapter 9 of the National Electrical Code (NEC) is dedicated to tables and other data that are essential for the proper understanding and application of the code. This chapter includes various tables that provide important information such as conductor properties, load calculations, and other critical values that electrical contractors and engineers rely on to ensure that installations meet code requirements.

The tables presented in Chapter 9 serve as vital reference points for professionals in the electrical field, enabling them to make informed decisions regarding material specifications and installation practices. This chapter complements other aspects of the NEC by providing quantitative data that supports the qualitative guidelines found in other chapters.

By focusing on tables, Chapter 9 assists electricians and contractors in navigating through the complex calculations and specifications needed to comply with safety and performance standards in electrical installations, confirming that this option is the accurate answer.