The application contains all those articles and topics which briefly explains the basics of electricity and electrical engineering. The application is suitable for professional electricians, amateur, DIYers and for those who are simply interested in this area. To read this electricians' handbook, you will be able to understand the complexity of the profession of an electrician with the help of many illustrations. . . . . Theory: You will learn detailed information on different electrical equipment and devices that are used and installed in different areas, for example, in a factory, a house or governmental building. Explain the basic theory of electricity written in simple and comprehensive language. Briefly about electrical voltage, electrical resistance, current, power factor, ground fault, ohm's law, electrical generation and substation, short circuit and so on. Here you will learn step by step instruction on how to install and repair electrical equipment. Calculators: You can use various calculators, unit converters and useful tables. For example Ohm's law calculator, conductor size, voltage drop, power loss in cable, battery life, voltage divider etc.They will help you in providing quick references and accurate calculations. Wiring diagrams: We will teach you about the interacting diagrams for connecting electrical appliances, for example, connecting different types of switches, sockets, relays and motors. To read these diagrams you will be able to understand how these electrical circuits work. Quizzes: We will provide a certain number of quizzes. The purpose of these quizzes is to evaluate the level of your understanding of basic knowledge of electricity and electrical engineering. Read this electricians' handbook to improve and refresh your knowledge of electricity and electrical engineering. Keep up to date yourself with the application, you will be able to work on many electrical equipment independently, but please always follow the instructions of the professional electricians who are working for you. Observe and follow strictly the electrical safety requirements when working with electrical equipment. Electricity is not visible or audible! Be careful! We will add more articals and schemes periodicaly. If you have any suggestion about the application then feel free to contact us by email calculation.worldapps@gmail.com.