Searching, maybe in the wrong sites, I havent found the kind of software I m looking for. A simple program able to calculate all the characteristics of a circuit but with the america standards AWG lower voltage and the normative in the different countries. Something like the schneider ecodial, canneco ABB have in Europe. All I've found are based in High voltage and provides and facilitate the calculation in HV nets. I need it specifically for Venezuela (COVENIN) but in a future could need it for chile and another countries. Im also , if that doesnt means to ask too much, a demo version to test it and evaluate it adquisition for the company Im working for.