PTW Cable Ampacity module is for accurate calculation of rating and temperature rise in various power cable installations, which is an important part of power system design and analysis. The calculation determines the proper cable sizes to carry specified loads in designing new systems and upgrading power cable installations. The software examines cable temperature and rating in performing analysis of existing systems. The accuracy of the calculation provides increased confidence in the design, upgrading, and analysis projects. The Cable Ampacity module is an efficient tool for making complex calculation tasks straightforward and easy.