27-02-2017, 10:20 AM
There is no difference between a 3 phase load and 3 equal single phase loads with a common neutral. There may have been some nasty power factor issues with the sunbeds. I've just found this article which says that harmonics are a big problem and can give up to 200% neutral current: http://www.cromptonusa.com/Neutral%20Current.pdf
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
