The book presents instruction cards that can be used as didactic material (written instruction). Each topic and subtopic is given a brief description and recommendations for their study. At the end of the instruction charts are the test questions and brief reference material. The manual is a practical guide for industrial training of SPTU students in the profession of an electrician in lighting, power networks and power electrical equipment. It can be successfully used in the training of electricians in production and schoolchildren in the public education system.