This book is a reference book, in the first volume of that, except basic information on the theory of the electrical engineering, information over is brought about electrical engineering materials, measuring devices and терморегуляторах. The review of heating engineering equipment and recommendation is Given on application of electro-heaters. A светотехническое equipment and questions of электроосвещения are described in detail.The detailed reference data over are brought on equipment, devices and devices of both past years of producing and on new modern, including reference data on widely applied the last years imported. This information will be useful to the electricians and electrical engineering personnel.Principles and rules of implementation of electrical engineering drafts are also described in a book. The brought material over will be useful to the students of institutions of higher learning with electrical engineering specialities. Theoretical part of book is counted on skilled and aspiring to promote the level knowledge of electricians and technical and engineering employees, busy at exploitation of electrical equipment. The large volume of certificate information, presented in a book, does her an irreplaceable manual in practical activity.