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The 2017 Massachusetts 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 Journeyman Electricians exams such as conductor sizing and protection, motors, transformers, voltage drop, 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 electrical competency exam.