Computer aided design of low voltage electrical installations

Abstract The paper proposes a method of calculation and rapid sizing power circuits electrical panels using program made in-house. proposed application has friendly very intuitive graphical interface, being easy to use due the intelligent way making selection data entry. This emerged in response real need for fast accurate low voltage switchboards used industry. help is provided by mechanism that allows frequent modification technical solution adapt ever-changing requirements dictated stages development projects.The operation based on existence an internal database materialized several tables containing various types consumers, switching protection equipment series standardized cables from which they are automatically selected. verification calculations with methods so only matches user selected ensuring additional omissions may occur.The useful designing new installation or existing ones, allowing even real-time observation influence changes project.