This book was extracted from the full textbook titled, Electrical Exam Preparation. Subjects include understanding voltage systems (120/240, 120/208V, 277/480V single-phase and 3-phase), transformer balancing, transformer sizing, panel balancing, and conductor sizing. In addition, this program explains grounding and bonding and how to size primary and secondary protection as well as conductor sizing. Includes one 4-hour DVD and textbook.