Technology

Education and Learning

Electrical Reference for Journeyman Electricians

A Study Guide With 400+ Questions on the National Electrical CodeBy Raymond Kerrigan

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Length15h 11m

About this audiobook

Passing the journeyman exam is not a memory test—it is a speed test in a book you are allowed to bring. This study guide teaches you to navigate the National Electrical Code the way the exam demands: find the article, read the exception, run the numbers, move on. Instead of memorizing isolated facts, you will learn a repeatable method for locating code requirements quickly, applying exceptions correctly, and performing the calculations that appear on every journeyman examination. The focus is on the skills that actually save time in the exam room: knowing how the Code is organized, recognizing which article governs a question, and working through the math without hesitation. You will work through conductor ampacity and correction factors, voltage drop, raceway and box fill, branch circuits and required outlets, dwelling and commercial load calculations, services, grounding and bonding, overcurrent protection, motor and air conditioning circuits, transformers, and special occupancies. More than four hundred practice questions across four timed exams show the calculation and the article behind every answer, so you can see not only what the correct answer is but where it comes from in the Code. Each chapter builds the habits that separate candidates who finish from those who run out of time. What you will learn: • How the National Electrical Code is organized and how to find the right article fast • Electrical theory the exam assumes you already know • Conductor ampacity, correction factors, and adjustment for temperature and conduit fill • Voltage drop calculations and conductor selection • Wiring methods, raceway fill, boxes, conduit bodies, and enclosures • Branch circuits, required outlets, and receptacle placement • Dwelling, commercial, and multifamily load calculations • Services, service equipment, grounding, bonding, and overcurrent protection • Motors, air conditioning circuits, transformers, and special occupancies Written for apprentices sitting the journeyman exam, electricians upgrading their licence, and instructors running exam-prep classes, this guide turns the Code into a working tool. If you need to build speed, accuracy, and confidence with the National Electrical Code before exam day, this book is designed for you.

Audiobook details

GenreTechnology, Education and Learning

Length15 hrs 11 mins

Narrated byListen with 1,000+ voices

FormateBook with Audio

Publish dateSep 26, 2026

LanguageEnglish

1Foreword

2Preface

3About This Book

4Important Safety Notice

5Chapter 1: How the Code Is Organised

Show all chapters

61.1 The Architecture of the Code Book

71.2 Mandatory, Permissive and Prohibitive Language

81.3 The Definitions Article and How to Use It

91.4 Tables, Annexes and the Notes That Change the Answer

101.5 A Sixty-Second Lookup Routine

11Chapter 2: Electrical Theory the Exam Assumes

122.1 Ohm’s Law and the Power Wheel

132.2 Series and Parallel Circuits

142.3 Real Power, Apparent Power and Power Factor

152.4 Three-Phase Wye and Delta Relationships

16Chapter 3: Conductors and Ampacity

173.1 Conductor Types, Insulation and Temperature Ratings

183.2 Reading the Ampacity Table

193.3 Ambient Temperature Correction

203.4 Conduit-Fill Adjustment Factors

213.5 Continuous Loads and the 125 Percent Rule

22Chapter 4: Voltage Drop and Conductor Selection

234.1 Why Voltage Drop Matters and Where It Is Required

244.2 Single-Phase Voltage Drop Calculation

254.3 Three-Phase Voltage Drop Calculation

264.4 Parallel Conductors and Their Effect on Drop

274.5 Upsizing the Equipment Grounding Conductor

28Chapter 5: Wiring Methods and Raceway Fill

295.1 Choosing a Wiring Method

305.2 Raceway Fill and Conductor Count

315.3 Bend Limits, Securing and Support

325.4 Expansion, Contraction and Wet Locations

33Chapter 6: Boxes, Conduit Bodies and Enclosures

346.1 Box Fill Counting Rules

356.2 Box Volume Tables and Selecting a Box

366.3 Pull and Junction Box Sizing

376.4 Enclosure Types and Locations

38Chapter 7: Branch Circuits and Outlet Requirements

397.1 Branch-Circuit Ratings and Loading

407.2 Receptacle Spacing and Required Outlets

417.3 Ground-Fault and Arc-Fault Protection

427.4 Multiwire Branch Circuits

43Chapter 8: Dwelling Load Calculations

448.1 General Lighting and Small-Appliance Loads

458.2 Appliance Loads and Demand Factors

468.3 Heating and Air Conditioning

478.4 The Standard Method and the Optional Method

48Chapter 9: Commercial and Multifamily Load Calculations

499.1 Receptacle and Show-Window Loads

509.2 Kitchen Equipment and Motor Loads

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