61 Copyright Goodheart-Willcox Co., Inc. Chapter Outline 5.1 General Rules and Requirements 5.1.1 Rules for Buried Conductors 5.1.2 Securing and Supporting Wiring Systems 5.1.3 Wiring within Air-Handling Spaces 5.1.4 Temporary Installations 5.2 Wiring Methods 5.2.1 Multiconductor Cable 5.2.2 Raceways 5.2.3 Cable Trays 5.2.4 Multioutlet Assemblies 5.3 Working with Conduit 5.3.1 Cutting Conduit 5.3.2 Reaming Conduit 5.3.3 Bending Metallic Conduit Objectives After completing this chapter, you will be able to: • List the wiring methods available for commercial installation and the rules regarding each method of wiring. • Size wireways to satisfy Code requirements. • Identify fi ttings, connectors, supports, and other integral hardware unique to a particular wiring method. • Select the correct wiring method based on Code requirements. • Calculate wireway size. CHAPTER 5 Wiring Methods Technical Terms armored cable (AC) auxiliary gutter back-to-back bend box off set busway cable tray electrical metallic tubing (EMT) electrical nonmetallic tubing (ENT) fi eld bend fl exible metal conduit (FMC) intermediate metal conduit (IMC) liquidtight fl exible metal conduit (LFMC) metal-clad (MC) cable multiconductor cable nonmetallic-sheathed cable off set bend rigid metal conduit (RMC) rigid polyvinyl chloride (PVC) conduit saddle bend service-entrance cable shrink stub bend surface raceway wireway Tboxes, his chapter is an introduction to conduits, raceways, busways, wireways, junction gutters, bus bars, pull boxes, device boxes, and a host of other wiring methods and related components. These items compose the system through which electricity is routed. The Code recognizes many wiring methods for use in buildings. These wiring methods fall into several main categories: • Raceways • Conductors • Cable • Cable trays • Busways • Gutters • Wireways. Some of the wiring methods have very spe- cifi c applications, while others can be used in a greater variety of conditions. The table in Figure 5-1 lists wiring methods and their cor- responding Code articles. This is not a complete