hi I could do with some help
how do you recogfnise what kind of type opf 3phase system is present in an installation i.e. tnc-s, tn-s
single phase I know,but three phase i don't - some pics or links would be great
how do you recogfnise what kind of type opf 3phase system is present in an installation i.e. tnc-s, tn-s
single phase I know,but three phase i don't - some pics or links would be great