The purpose and technical characteristics of the main elements and devices of electrical equipment systems, as well as cable and electrical insulating products, electrical apparatuses, transformers, electrical machines, semiconductor devices, converters and lighting devices are considered. The basic information on electrical engineering is given, the calculated ratios for the selection and verification of electrical equipment are touched upon the issues of electrical saving and electrical safety . For students of primary vocational education institutions . Basic information on electrical engineering. Electrical Materials . Conductor products. Low Voltage Electrical Apparatus. Switching Electrical Apparatus and High Voltage Devices. Synchronous Electric Machines . Asynchronous motors. Electric DC Machines. Power fuses, capacitors, resistors and reactors. Semiconductor elements and devices of control circuits and automation. Power semiconductor converters. Electrical drive of working machines and mechanisms. Electric lighting . Electrical installations.