| Preface to the Fourteenth Edition xi |
| Division 1 FUNDAMENTALS 1.1 |
| Useful Tables / 1.2 |
| Conversion Factors / 1.9 |
| Graphical Electrical Symbols / 1.12 |
| Principles of Electricity and Magnetism: Units / 1.21 |
| Measuring, Testing, and Instruments / 1.70 |
| Harmonics / 1.100 |
| Division 2 PROPERTIES AND SPLICING OF CONDUCTORS 2.1 |
| Electrical Conducting Wires and Cables / 2.1 |
| Cable Joints and Terminal Connections / 2.76 |
| Aluminum-Building-Wire Installation Practices / 2.120 |
| Termination and Splice Kits / 2.137 |
| Division 3 CIRCUITS AND CIRCUIT CALCULATIONS 3.1 |
| Types of Circuits / 3.1 |
| Electrical Systems / 3.7 |
| Circuit Calculations / 3.20 |
| Division 4 GENERAL ELECTRICAL EQUIPMENT AND BATTERIES 4.1 |
| Introduction / 4.1 |
| Switches / 4.1 |
| Installation of Switches / 4.32 |
| Protective Devices / 4.34 |
| Switchboards and Switchgear / 4.72 |
| Panelboards / 4.82 |
| General Wiring Materials and Devices / 4.92 |
| Power Capacitors / 4.133 |
| Batteries: General / 4.140 |
| Primary Batteries / 4.141 |
| Storage Batteries: General / 4.145 |
| Lead-Acid Storage Batteries / 4.149 |
| Nickel-Iron-Alkaline Batteries / 4.162 |
| Nickel-Cadmium Batteries / 4.173 |
| vi CONTENTS |
| Installation of Storage Batteries / 4.187 |
| General Construction Materials / 4.190 |
| Division 5 TRANSFORMERS 5.1 |
| Construction, Types, and Characteristics / 5.1 |
| Connections: Polarity / 5.53 |
| Single-Phase Connections / 5.55 |
| Two-Phase Connections / 5.57 |
| Three-Phase Connections / 5.58 |
| Special Transformer Connections / 5.67 |
| Connections for Three-Phase Transformers / 5.76 |
| Parallel Operation / 5.77 |
| Connections and Applications of Autotransformers / 5.79 |
| Installation, Care, and Operation / 5.82 |
| Provisions for Different Types of Transformers / 5.86 |
| Provisions for Transformer Vaults / 5.88 |
| The Noise Problem / 5.101 |
| Pole and Platform Mounting / 5.104 |
| Saturable-Core Reactor / 5.110 |
| Division 6 SOLID-STATE DEVICES AND CIRCUITS 6.1 |
| Fundamentals of Electronics / 6.1 |
| Discrete Solid-State Components / 6.4 |
| Integrated Circuits / 6.42 |
| Integrated-Circuit Logic Functions / 6.49 |
| Microcomputers / 6.73 |
| Electronic Memories / 6.78 |
| Product Reliability / 6.91 |
| Division 7 GENERATORS AND MOTORS 7.1 |
| Principles, Characteristics and Management of DC Generators (Dynamos) / 7.1 |
| Principles, Characteristics, and Management of AC Generators (Alternators) / 7.44 |
| Principles, Characteristics, and Management of Electric Motors / 7.58 |
| Direct-Current Motors / 7.66 |
| Alternating-Current Motors / 7.77 |
| Conversion Equipment / 7.128 |
| Troubles of AC Motors and Generators: Their Localization and Correction / 7.131 |
| Care of Motors / 7.139 |
| Control Equipment for Motors / 7.149 |
| Motor Drives and Application / 7.216 |
| Motor Circuits / 7.240 |
| Control Circuits / 7.261 |
| Air-Conditioning and Refrigerating Equipment / 7.262 |
| Engine- and Gas-Turbine Generators / 7.270 |
| CONTENTS vii |
| Division 8 OUTSIDE DISTRIBUTION 8.1 |
| Pole Lines: General, Construction, and Equipment / 8.1 |
| Pole-Line Construction / 8.36 |
| Pole-Line Guying / 8.59 |
| Underground Wiring / 8.69 |
| Grounding of Systems / 8.89 |
| Division 9 INTERIOR WIRING 9.1 |
| General / 9.1 |
| Open Wiring On Insulators / 9.17 |
| Concealed Knob-and-Tube Wiring / 9.26 |
| Rigid-Metal-Conduit and Intermediate-Metal-Conduit Wiring / 9.27 |
| Interior or Aboveground Wiring with Rigid Nonmetallic Conduit / 9.59 |
| Flexible-Metal-Conduit Wiring / 9.64 |
| Liquidtight Flexible-Metal-Conduit Wiring / 9.67 |
| Metal-Clad-Cable Wiring: Types AC and MC / 9.68 |
| Surface-Raceway Wiring / 9.72 |
| Electrical-Metallic-Tubing Wiring / 9.89 |
| Nonmetallic-Sheathed-Cable Wiring / 9.93 |
| Mineral-Insulated Metal-Sheathed-Cable Wiring / 9.97 |
| Medium-Voltage-Cable Wiring / 9.105 |
| Underground-Feeder and Branch-Circuit-Cable Wiring / 9.106 |
| Interior Wiring with Service-Entrance Cable / 9.106 |
| Underfloor-Raceway Wiring / 9.108 |
| Wireway Wiring / 9.124 |
| Busway Wiring / 9.126 |
| Cellular-Metal-Floor-Raceway Wiring / 9.161 |
| Cellular-Concrete-Floor-Raceway Wiring / 9.171 |
| Wiring with Multioutlet Assemblies / 9.179 |
| Cablebus Wiring / 9.185 |
| Cable Trays / 9.190 |
| General Requirements for Wiring Installations / 9.195 |
| Crane Wiring / 9.238 |
| Wiring for Circuits of Over 600 Volts / 9.246 |
| Wiring for Circuits of Less Than 50 Volts / 9.249 |
| Wiring for Hazardous Locations / 9.249 |
| Installation of Appliances / 9.251 |
| Electric Comfort Conditioning / 9.253 |
| Wiring for Electric Signs and Outline Lighting / 9.276 |
| Remote-Control, Signaling, and Power-Limited Circuits / 9.281 |
| Wiring for Special Occupanices / 9.285 |
| Design of Interior-Wiring Installations / 9.286 |
| Wiring for Residential Outdoor Lighting / 9.291 |
| Wiring for Commercial and Industrial Occupancies / 9.296 |
| Farm Wiring / 9.331 |
| Division 10 ELECTRIC LIGHTING 10.1 |
| Principles and Units / 10.1 |
| Electric-Light Sources / 10.24 |
| Incandescent (Filament) Lamps / 10.24 |
| viii CONTENTS |
| Fluorescent Lamps / 10.39 |
| Gaseous-Discharge Lamps / 10.64 |
| Neon Lamps / 10.79 |
| Ultraviolet-Light Sources / 10.86 |
| Infrared Heating Lamps / 10.89 |
| Luminaires / 10.91 |
| Principles of Lighting-Installation Design / 10.111 |
| Tables for Interior Illumination Design / 10.129 |
| Interior-Lighting Suggestions / 10.132 |
| Heat with Light for Building Spaces / 10.136 |
| Street Lighting / 10.139 |
| Floodlighting / 10.143 |
| Division 11 OPTICAL FIBER 11.1 |
| General / 11.1 |
| Cabling / 11.4 |
| Connectors / 11.5 |
| Splices / 11.6 |
| Testing / 11.6 |
| Basic Terminology / 11.6 |
| Light Sources / 11.17 |
| Types of Optical Fibers / 11.21 |
| Breakout Kits / 11.28 |
| Safety / 11.31 |
| Non-Communication Applications / 11.40 |
| Division 12 WIRING AND DESIGN TABLES 12.1 |
| Standard Sizes of Lamps for General Illumination, in Watts / 12.3 |
| Demand Factors and Data for Determining Minimum Loads / 12.4 |
| Full-Load Currents of Motors / 12.10 |
| Capacitor Ratings for Use with Three-Phase 60-Hz Motors / 12.14 |
| Ampacities of Conductors / 12.14 |
| Ampacity of Flexible Cords and Cables / 12.28 |
| Ampacity of Fixture Wires / 12.30 |
| Ampacity of Aluminum Cable, Steel-Reinforced / 12.31 |
| Ampacity of Parkway Cables Buried Directly in Ground / 12.31 |
| Number of Conductors in Conduit and Dimensions / 12.32 |
| Compact Aluminum Wire and Dimensions / 12.37 |
| Switches-Termination Space / 12.38 |
| Switch-Gutter and Termination Space / 12.39 |
| Enclosed Switch Wiring Space / 12.40 |
| Elevation of Unguarded Parts above Working Space / 12.42 |
| Ordinary Ratings of Overload Protective Devices, in Amperes / 12.43 |
| Nonrenewable Cartridge Fuses / 12.43 |
| Ratings and Number of Overload Protective Devices / 12.49 |
| Motor Code Letters and Locked-Rotor Kilovolt-Amperes / 12.51 |
| Maximum Ratings for Motor Branch-Circuit Protection / 12.52 |
| Conversion Table of Single-Phase Locked Rotor Currents / 12.53 |
| Conversion Table of Polyphase Design B, C, D, and E Maximum Locked Rotor |
| Currents / 12.54 |
| Horsepower Ratings of Fused Switches / 12.55 |
| Minimum Branch-Circuit Sizes for Motors / 12.57 |
| CONTENTS ix |
| Maximum Allowable Voltage Drop / 12.58 |
| Graph for Computing Copper-Conductor Sizes According to Voltage Drop / 12.59 |
| Data for Computing Voltage Drop / 12.60 |
| Metric Practice / 12.69 |
| Index follows Division 12 |
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