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The Iowa 2014 Master Electrician's Exam Questions and Study Guide is a comprehensive study preparation guide written by Ray Holder. The study guide will help you prepare for the exam by providing 12 practice open book exams and 2 Final Closed Book Exams. This book also covers most topics that are included on all Master Electricians exams such as conductor sizing and protection, motors, transformers, voltage drop, demand loads, box and conduit sizing, over-current protection and residential and commercial load calculations. The text contains the most widely used electrical calculations and formulas the reader needs to pass the journeyman and master electrical competency exam.