Subjects include the NEC rules that apply to low-voltage and limited-energy systems that most people are not aware of, definitions, the general NEC installation requirements, and specific NEC requirements for control, sound, video, CATV, CCTV, antennas, telephone, fiber optics, etc. Topics include grounding, cable installation, spacing, support, etc. This program is suitable for Low Voltage exam preparation and the textbook includes practice questions, quizzes, and a final exam.