54 Modern Commercial Wiring Copyright Goodheart-Willcox Co., Inc. • Tables and annexes—Chapter 9 contains many tables. The appendices contain additional information related to the Code. These items are listed in Figure 4-16. Within the Code, chapters are divided into articles. Each article is identifi ed with a three- digit number. The fi rst digit of the article num- ber identifi es the chapter in which the article is located. Article 300—Wiring Methods is the fi rst article in Chapter 3. Each article addresses a specifi c topic. Most articles consist of several parts, which are identifi ed by letters. The parts help to orga- nize the article and make it easier for the user to locate a specifi c item. The parts are then divided into sections, with the sections further divided into subsections. Almost all references in the Code and in this text are section references. For example, a ref- erence to Section 344.10(B)(2) directs the user to subpart (2) of subsection (B) of Section 344.10. Section 344.10 is found in Article 344. See Figure 4-17. Goodheart-Willcox Publisher Figure 4-15. Chapter 8 of the Code contains the requirements for communication systems. Section Three—Communication Systems Article Title Article Title 800 805 810 820 General Requirements for Communications Systems Communications Circuits Radio and Television Equipment Community Antenna Television and Radio Distribution Systems 830 840 Network-Powered Broadband Communications Systems Premises-Powered Broadband Communications Systems Goodheart-Willcox Publisher Figure 4-16. Reference tables are found in Chapter 9 of the Code. Additional information is contained in the appendices. Section Four—Tables and Annexes Table Title Table Title 1 2 4 5 5A 8 9 10 11(A) 11(B) Percent of Cross Section of Conduit and Tubing for Conductors and Cables Radius of Conduit and Tubing Bends Dimensions and Percent Area of Conduit and Tubing (Areas of Conduit or Tubing for the Combinations of Wires Permitted in Table 1, Chapter 9) Dimensions of Insulated Conductors and Fix- ture Wires Compact Copper and Aluminum Building Wire Nominal Dimensions and Areas Conductor Properties AC Resistance and Reactance for 600 Volt Cables, 3-Phase, 60 Hz, 75°C (167°F)—Three Single Conductors in a Conduit Conductor Stranding Class 2 and Class 3 Alternating-Current Power Source Limitations Class 2 and Class 3 Direct-Current Power Source Limitations 12(A) 12(B) PLFA Alternating-Current Power Source Limitations PLFA Direct-Current Power Source Limitations Annex Title A B C D E F G H I J Product Safety Standards Application Information for Ampacity Calculation Conduit, Tubing, and Cable Tray Fill Tables for Conductors and Fixture Wires of the Same Size Examples Types of Construction Availability and Reliability for Critical Operations Power Systems and Development and Implementation of Functional Performance Tests (FPTs) for Critical Operations Power Systems Supervisory Control and Data Acquisition (SCDA) Administration and Enforcement Recommended Tightening Torque Tables from UL Standards 486A-B ADA Standards for Accessible Design