Includes practice exams and answers.

Based on the 2008 National Electrical Code.

Calculations for the Electrical Exam contains nine chapters of solid calculation instruction. It covers continuous loads, branch circuits, ampacity and correction factors for ambient temperatures and neutral conductors, conductor terminations per Section 110.14 (C), advantages of using 90-degree Celsius conductors (THHN), calculating motor overload protection, along with overcurrent protection and wire sizing for the branch circuit and feeder for single-phase and three-phase motors, sizing taps, box/conduit sizing, along with straight pulls, angle pulls and U pulls for conductor sizes #4 and larger, residential and commercial cooking equipment, single phase ranges on a three-phase system, calculating commercial and dwelling service sizes, paralleling conductors, panelboard sizing, and more.

This best-selling electrical reference includes five Journeyman and five Master practice exams and answers. Over 350 pages of excellent calculation study material.

From the Preface
The writing of this book is an accumulation of over 50 years' electrical experience working as an apprentice electrician, journeyman electrician, industrial electrician, construction electrician, master electrician, electrical inspector, author of over 40 books, and over 25 years as an electrical instructor preparing over 25,000 electricians throughout the U.S.A. for their electrical license examination.

I have learned how broad the term "electrician" can be in the specialized world we work in today.

I consider myself very fortunate to have been able to work in several of the "electrician" categories. Starting in 1956 as an apprentice electrician on diesel locomotives I learned the DC theory, generation, and horsepower. Later I worked as a railway signalman, a job that involves the climbing of poles and maintenance of cross-arms, towers, and gates. In the automated industry you are the "control electrician," the troubleshooter and maintainer. As a construction electrician you are the installer. At Disney World, I was a monorail electrician working on everything from the sophisticated control systems to the traction motors. As a master electrician, I was the electrical contractor involved with the electrical permits, design and running the job. As an electrical inspector you become the authority on the rules. As the electrical instructor and author, you never stop learning or studying and researching the exceptions and the fine print notes.

My objective in writing this book is to make the electrical exam calculations easier for the "electrician."

The electrical examination is something that will follow some electricians throughout their career.

An electrical license is required by most cities, counties, and states (which generally do not reciprocate). This requires taking electrical exams in different areas as you travel in your electrical work.

I have found in my experiences that test-taking by the electrician is difficult for the simple reason that an electrician is working from a blueprint where the calculations were performed by an electrical designer. Often in the field we use a slide for determining how many conductors can be installed in a certain size conduit or what size overloads are required for a motor, etc. The electrical exam requires the electrician, with the Code Book, to determine the maximum fill permitted in the conduit, the minimum size overloads, and to design the electrical system to the Code minimum requirements, which requires applying all the rules and demand factors that apply.