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ELECTRICAL CALCULATIONS

Mike's Calculations products explain how to perform the electrical calculations necessary for properly selecting the material required to complete an electrical installation that's safe and conforms to the requirements of the NEC.

Electrical Calculations

Masters Calculations DVD Library

In order to be successful in the trade, you must understand how to perform the important electrical calculations in accordance with the NEC. The textbook contains clear, easy-to-understand graphics that fully illustrate the concepts, and the DVDs  take you step-by-step through those calculations with commentary and insight by Mike and his panel of experts.

This package includes 8 calculations DVDs, three of which are not in the Journeyman library: Multifamily Dwelling Calculations, Commercial Calculations, and Transformer Calculations.

Select a Code Year

2014 NEC Version

2011 NEC Version


Journeyman Calculations DVD Library

This textbook and DVDs cover the electrical calculations that would be found on the journeyman exam. The textbook contains clear, easy-to-understand graphics that fully illustrate the concepts, and the DVDs take you step-by-step through those calculations with commentary and insight by Mike and his panel of experts.

This package includes 5 DVDs, and excludes the following 3 DVDs that are in the Master Calculations Library: Multifamily Dwelling Calculations, Commercial Calculations, Transformer Calculations.

Select a Code Year

2014 NEC Version

2011 NEC Version


Electrical Exam Preparation textbook

This book is designed for individual or classroom use and is designed to help you learn the material and test your knowledge. It will guide you through everything you need to know about electrical calculations, and help you review the theory that you will have on your exam.


Electrical Formulas with Sample Calculations

An easy-to-use reference for working with electrical formulas and calculations. The examples used in this book are based on the 2008 NEC, but the concepts on which the formulas and calculations are based are independent of the Code. This textbook is 4.25 x 9 in - this convenient size enables you to carry it with you out in the field - fitting in your toolbox, pocket, or glove box.

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Individual Calculation DVD sets

Raceway and Box Calculations

This Unit covers how to properly calculate the maximum number of conductors and "conductor equivalents" to be installed in an outlet box.

The booklet is extracted from Mike Holt's Electrical Exam Preparation textbook.

Select a Code Year

2014 NEC Version

2011 NEC Version


Conductor Sizing & Protection Calculations

This Unit covers the numerous factors that must be taken into account in properly sizing conductors and providing for their protection.

The booklet is extracted from Mike Holt's Electrical Exam Preparation textbook.

Select a Code Year

2014 NEC Version

2011 NEC Version


Motor and Air-Conditioning Calculations

This Unit covers the rules for sizing conductors and protection for motor circuits and air conditioners.

The booklet is extracted from Mike Holt's Electrical Exam Preparation textbook.

Select a Code Year

2014 NEC Version

2011 NEC Version


Voltage-Drop Calculations

This Unit covers how to find all the information necessary to make accurate voltage-drop calculations for either single-phase or thre-phase circuits.

The booklet is extracted from Mike Holt's Electrical Exam Preparation textbook.

Select a Code Year

2014 NEC Version

2011 NEC Version


Dwelling Unit Calculations

This Unit focuses on sizing the service for a one-family dwelling.

The booklet is extracted from Mike Holt's Electrical Exam Preparation textbook.

Select a Code Year

2014 NEC Version

2011 NEC Version


Multifamily Dwelling Calculations

This Unit covers the sizing of branch circuits, feeders and service conductors for multifamily dwellings.

The booklet is extracted from Mike Holt's Electrical Exam Preparation textbook.

Select a Code Year

2014 NEC Version

2011 NEC Version


Commercial Calculations

This Unit shows that the calculations used to size feeders and service conductors for commercial installations don't include the same demand factors allowed for dwelling units.

The booklet is extracted from Mike Holt's Electrical Exam Preparation textbook.

Select a Code Year

2014 NEC Version

2011 NEC Version


Transformer Calculations

This Unit teaches important concepts about transformers, and looks at current flow, power loss and how to size the conductors.

The booklet is extracted from Mike Holt's Electrical Exam Preparation textbook.

Select a Code Year

2014 NEC Version

2011 NEC Version

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