The paper presents the creation of a software for designing, verifying and analyzing voltage drops on electrical circuits, taking into account the classic design formulas and also the reactance of low-voltage electric cables. With the help of the application, it is possible to dimension and verify the existing electrical circuits as well as those of the single-wire schemes being designed as a result of the modernization or replacement of equipment in existing distribution networks. The application can be used for designing general consumers or for electrical equipment operated with direct start, star-delta or frequency converter electric motors.

Keywords: software, application, dimensioning, design, electrical circuits, electrical networks.