This paper describes the process of designing and creating project documentation so that a particular investor can obtain a permit to connect to the electricity grid. The design steps will be briefly explained below. The second chapter describes four (4) types of projects, the objectives of the project documentation and the basic and mandatory parts of the project. The main participants during the design and construction of the building are also mentioned. Throughout the third chapter, the entire electrical project is explained. The external and internal connection and how the installation of strong and weak current is performed are also described. Each main switchboard must contain a circuit breaker ZUDS 40 / 0.03 A and 25 / 0.03 A for bathrooms, with circuit breakers predominantly B and C characteristics. After the described connections and installations, we move on to the protective measures that must be adhered to during the design of the project. This chapter contains the laws on fire protection and the law on safety at work in order for contractors to perform their work as safely as possible. After the protective measures have been described and determined, the method of laying the grounding conductor and the lightning protection installation has been explained. Lightning rod made of galvanized steel strip 25x4 mm is laid in the foundation beams of the building. The cost of designing the project is an estimate only. Various calculations have been defined, ranging from power line calculations, earthing resistance calculations to lightning risk calculations. When calculating, it is very important to put the appropriate fuses for each supply line. At the very end of the third chapter, there are electrical drawings made in AutoCAD. After the symbols of sockets, lights, switches, etc. are marked, the circuits are marked. In that process it is necessary to take care not to put too much load on one circuit considering the current load of the fuse located in the distributor and the allowed current load of the conductor which is provided for that circuit.