Mike Holt's Master/Contractor Intermediate Training Course, 2023 NEC Proven to work. Hundreds of electricians have used the Mike Holt exam prep course to sail through their exams and advance their career. You can, too. Pass your 2023 Master/ Contractor Exam on your first attempt by preparing properly with this exam prep course. This package assumes you know electrical theory, so that is not included. Improve your understanding of the NEC, load calculations, overcurrent protection, and conductor sizing. Work sample exam problems and build your test-taking abilities. Master voltage drop, dwelling, multi-family dwelling, and other calculations from the Master Contractor Exam. If you have a solid understanding of electrical theory from fairly recent study, this exam prep package is probably your best bet for the 2023 Master Contractor Exam. Mike Holt, NEC expert, and one of the top electrical Instructors in the United States, walks you through the 2023 NEC Changes and gives you in-depth training on all the Electrical Calculations that you will need to pass your exam. Includes: Changes to the NEC Textbook Code Changes DVDs Exam Preparation Textbook DVDs for the following Calculations: Raceway Box Conductor Sizing and Protection Motor, Air-Conditioning, and Transformer Voltage Drop Dwelling Unit Multifamily Dwelling Commercial Master Electrician Simulated Exams ?PLUS! A digital version of each book Mindconnection, LLC is an authorized dealer of Mike Holt products and has helped develop many of them. When you buy from us, you get the real deal.