TABLE OF CONTENTS CHAPTER 2 WIRING AND PROTECTION CHAPTER 1 GENERAL RULES... 19

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1 TABLE OF CONTENTS About This Textbook...xi How to Use the National Electrical Code... 1 Article 90 Introduction to the National Electrical Code Purpose of the NEC Scope of the NEC Code Arrangement Enforcement Mandatory Requirements and Explanatory Material Formal Interpretations Examination of Equipment for Product Safety Units of Measurement Article 90 Practice Questions CHAPTER 1 GENERAL RULES Article 100 Definitions Part I. General Definitions Article 110 Requirements for Electrical Installations Part I. General Requirements Scope Approval of Conductors and Equipment Examination, Identification, Installation, Use, and Product Listing (Certification) of Equipment Conductor Material Conductor Sizes Wiring Integrity Suitable Wiring Methods Deteriorating Agents Mechanical Execution of Work Conductor Termination and Splicing Chapter 1 Practice Questions CHAPTER 2 WIRING AND PROTECTION Article 250 Grounding and Bonding Part I. General Scope Definition Performance Requirements for Grounding and Bonding Earth Shells Objectionable Current Objectionable Current Dangers of Objectionable Current Termination of Grounding and Bonding Conductors Protection of Fittings Clean Surfaces Part II. System Grounding and Bonding Systems Required to be Grounded Ungrounded Systems Service Equipment Grounding and Bonding Main Bonding Jumper and System Bonding Jumper Separately Derived Systems Grounding and Bonding Special Section Separately Derived Systems Outdoor Installations Indoor Installations Buildings Supplied by a Feeder Generators Portable and Vehicle-Mounted Permanently Installed Generators High-Impedance Grounded Systems Part III. Grounding Electrode System and Grounding Electrode Conductor Grounding Electrode System Grounding Electrode Types Grounding Electrode Installation Requirements Measuring the Ground Resistance Soil Resistivity Auxiliary Grounding Electrodes Common Grounding Electrode Lightning Protection Electrode Grounding Electrode Conductor v

2 Grounding Electrode Conductor Installation Sizing Grounding Electrode Conductor Termination to the Grounding Electrode Grounding Electrode Conductor Termination Fittings Part IV. Grounding Enclosure, Raceway, and Service Cable Connections Service Raceways and Enclosures Other Enclosures Part V. Bonding General Bonding Equipment for Services Bonding Communications Systems Bonding Other Enclosures Bonding Metal Parts Containing 277V and 480V Circuits Bonding Loosely Jointed Metal Raceways Grounded Conductor, Bonding Conductors, and Jumpers Bonding of Piping Systems and Exposed Structural Metal Lightning Protection System Part VI. Equipment Grounding and Equipment Grounding Conductors Fixed Equipment Connected by Permanent Wiring Methods General Specific Equipment Fastened in Place or Connected by Permanent Wiring Methods Cord-and-Plug-Connected Equipment Types of Equipment Grounding Conductors Identification of Equipment Grounding Conductors Equipment Grounding Conductor Installation Use of Equipment Grounding Conductors Sizing Equipment Grounding Conductor Part VII. Methods of Equipment Grounding Equipment Grounding Conductor Connections Equipment Connected by Permanent Wiring Methods Equipment Considered Grounded Cord-and-Plug-Connected Ranges, Ovens, and Clothes Dryers Use of Neutral Conductor for Equipment Grounding (Bonding) Connecting Receptacle Grounding Terminal to Metal Enclosure Continuity and Attachment of Equipment Grounding Conductors in Metal Boxes Chapter 2 Practice Questions CHAPTER 3 WIRING METHODS AND MATERIALS Article 300 General Requirements for Wiring Methods and Materials Part I. General Scope Conductors Electrical Continuity Article 314 Outlet, Device, Pull, and Junction Boxes; Conduit Bodies; and Handhole Enclosures Part I. Scope and General Scope Nonmetallic Boxes Metal Boxes Part II. Installation Covers and Canopies Sizing Conductors 4 AWG and Larger Handhole Enclosures Article 320 Armored Cable (Type AC) Scope Definition Equipment Grounding Conductor Article 330 Metal Clad Cable (Type MC) Scope Definition Equipment Grounding Conductor Article 334 Nonmetallic Sheathed Cable (Types NM and NMC) Scope Definition Equipment Grounding Conductor Article 348 Flexible Metal Conduit (Type FMC) Scope Definition Grounding and Bonding Article 350 Liquidtight Flexible Metal Conduit (Type LFMC) Scope vi Mike Holt s Illustrated Guide to Understanding 2017 NEC Requirements for Bonding and Grounding

3 350.2 Definition Grounding and Bonding Article 352 Rigid Polyvinyl Chloride Conduit (Type PVC) Scope Definition Equipment Grounding Conductor Article 356 Liquidtight Flexible Nonmetallic Conduit (Type LFNC) Scope Definition Equipment Grounding Conductor Article 358 Electrical Metallic Tubing (Type EMT) Scope Definition Grounding Article 362 Electrical Nonmetallic Tubing (Type ENT) Scope Definition Equipment Grounding Conductor Article 386 Surface Metal Raceways Scope Definition Equipment Grounding Conductor Separate Compartments Article 392 Cable Trays Scope Definition Equipment Grounding Conductor Chapter 3 Practice Questions CHAPTER 4 EQUIPMENT FOR GENERAL USE Article 404 Switches Scope Switch Faceplates Grounding of Enclosures Article 406 Receptacles, Cord Connectors, and Attachment Plugs (Caps) Scope Receptacle Rating and Type General Installation Requirements Receptacle Faceplates Connecting Receptacle Grounding Terminal to Equipment Grounding Conductor Article 408 Switchboards, Switchgear, and Panelboards Scope Equipment Grounding Conductor Article 410 Luminaires, Lampholders, and Lamps Scope Supports Methods of Grounding Article 440 Air Conditioning and Refrigeration Equipment Scope Definitions Grounding and Bonding Article 450 Transformers Scope Grounding and Bonding Chapter 4 Practice Questions CHAPTER 5 SPECIAL OCCUPANCIES Article 501 Class I Hazardous (Classified) Locations Scope Grounding and Bonding Article 502 Class II Hazardous (Classified) Locations Scope Grounding and Bonding vii

4 Article 503 Class III Hazardous (Classified) Locations Scope Grounding and Bonding Article 517 Health Care Facilities Scope Definitions Wiring Methods Grounding of Equipment in Patient Care Spaces Isolated Ground Receptacles Article 525 Carnivals, Circuses, Fairs, and Similar Events Scope Equipment Bonding Equipment Grounding Portable Equipment Grounding Conductor Continuity Article 547 Agricultural Buildings Scope Definitions Wiring Methods Equipotential Planes Article 555 Marinas, Boatyards, and Commercial and Noncommercial Docking Facilities Scope Grounding Chapter 5 Practice Questions CHAPTER 6 SPECIAL EQUIPMENT Article 600 Electric Signs and Outline Lighting Scope Grounding and Bonding Article 640 Audio Signal Processing, Amplification, and Reproduction Equipment Scope Grounding and Bonding Article 645 Information Technology Equipment Scope System Grounding and Bonding Equipment Grounding and Bonding Article 680 Swimming Pools, Spas, Hot Tubs, Fountains, and Similar Installations Part I. General Requirements for Pools, Spas, Hot Tubs, and Fountains Scope Definitions Grounding and Bonding Terminals Cord-and-Plug-Connected Equipment Part II. Permanently Installed Pools, Outdoor Spas, and Outdoor Hot Tubs General Motors Underwater Luminaires Junction Box, Transformer, or GFCI Enclosure Feeders Equipotential Bonding Part IV. Spas and Hot Tubs General Outdoor Installations Indoor Installations Part V. Fountains General Bonding Methods of Equipment Grounding Part VII. Hydromassage Bathtubs General Equipotential Bonding Part VIII. Electrically Powered Pool Lifts General Bonding Article 690 Solar Photovoltaic (PV) Systems Part I. General Scope Definitions viii Mike Holt s Illustrated Guide to Understanding 2017 NEC Requirements for Bonding and Grounding

5 Part IV. Wiring Methods Wiring Methods Connectors Part V. Grounding and Bonding System Grounding Point of Grounding Connection Equipment Grounding and Bonding Size of Equipment Grounding Conductors Array Equipment Grounding Conductors Grounding Electrode System Chapter 6 Practice Questions Part III. Protection Grounding of the Outer Conductive Shield of Coaxial Cables Part IV. Grounding Methods Bonding and Grounding Methods Chapter 8 Practice Questions FINAL EXAM A STRAIGHT ORDER FINAL EXAM B RANDOM ORDER CHAPTER 8 COMMUNICATIONS SYSTEMS Article 800 Communications Circuits Part I. General Scope Part III. Protection Primary Protection Part IV. Grounding Methods Cable and Primary Protector Bonding and Grounding APPENDIX A ANALYSIS OF 2017 NEC CHANGES RELATING TO BONDING AND GROUNDING INDEX About The Author About the Illustrator About the Mike Holt Team Article 810 Radio and Television Satellite Equipment Part I. General Scope Grounding Devices Part II. Receiving Equipment Antenna Systems Metal Antenna Supports Grounding Antenna Discharge Unit Bonding Conductor and Grounding Electrode Conductors Part III. Amateur and Citizen Band Transmitting and Receiving Antenna Systems Antenna Discharge Units Bonding Conductor or Grounding Electrode Conductors Article 820 Community Antenna Television (CATV) and Radio Distribution Systems (Coaxial Cable) Part I. General Scope ix