Mike Holt`s Electrical Calculations Training Library, 2020 NECYou must master electrical calculations to be successful in the electrical trade. You must understand how to perform the important electrical calculations specified in the National Electrical Code. The textbook contains clear, easy-to-understand graphics that help you fully understand the concepts behind electrical calculations. The detailed DVDs are taped from live classes and take you step-by-step through the calculations.Purchased separately this Library would cost $841, you save $242.This library includes:Electrical Exam Preparation Textbook based on the 2020 NEC· Raceway and Box Calculations DVD· Conductor Sizing and Protection Calculations DVD· Motor, Air-Conditioning and Transformer Calculations DVD· Voltage-Drop Calculations DVD· Dwelling Unit Calculations DVD· Multifamily Dwelling Calculations DVD· Commercial Calculations DVD Answer Key(s) included with all Mike Holt products.