An electrical engineer or a technician is often called upon to locate a fault in an electrical appliance in an industrial plant. In this case, the electrical engineer should have in his hands various diagrams and drawings of the electrical appliance so that together with various measuring instruments will enable him to locate the fault. It should be noted that many times the failure of appliances in an industrial plant can stop the production process, creating different problems for the company. For this reason, it is necessary to know the operation of the electrical appliances, as well as the existence of the necessary diagrams that will contribute to the reintegration of these appliances into industrial production. At this point, it should be mentioned that the design and construction of electrical and electronic appliances require a series of diagrams, based on which the production of these devices is achieved, and which eventually accompanies them to their installation sites.