We often facing problem during selection of proper cable size for different load in industry and household applications. If we do not select proper cable size then there will be short circuit and causes great accident. From below chart you can select the proper cable size according to load capacity in international standard.

You can select BYA, NYY both for single phase and three phase load.

Selection:

Suppose, for 20A single phase motor what will be cable size?

Answer: 1*2.5 rm.