Calculate the best suited cable for your electrical installation.
Topmatic is a computer software that can help you to choose the best square for you installations. The software takes maksimum voltage drop into account y using the UNE 20460-5-523 norm as reference in regard to tension assessment.
Topmatic can easily and effectively find the optimal cable for any installation by calculating the main parameters. This is a very useable tool for engineers, electricians, distributers, students etc.