S shaw0486 Senior Member Location baltimore Dec 28, 2008 #1 what is the point of using a zig zag auto transformer on a 3 phase system 3 wire system to get 3 phase 4 wire system insted of a delta wye transformer
what is the point of using a zig zag auto transformer on a 3 phase system 3 wire system to get 3 phase 4 wire system insted of a delta wye transformer