Hi, I haven't looked at cable calculations for a few years, and wondering if anyone can point me in the right direction. I want to size the neutral cable on a 3600kW three-phase generator. Preliminary calculations from a supplier have indicated that each phase circuit would require 4x1000mm2 cables and the neutral would be 1x800mm2 cable. I would like to know the formula required to arrive at this conclusion. As background, the generator operates at 725V, with the neutral solidly earthed at the star point. Any help would be appreciated! Thanks.
