I have a 3 θ 240v 7kva generator and would like to know how to wire in a 3 θ to 1θ transformer ,I have found 3 θ to 1 θ transformers but are very $ ,I found this schmatic of one,and I can find used transformers reasonable,If anyone has done this please reply.http://http://www.wipo.int/pctdb/en/wo.jsp?wo=1983001341&IA=JP1982000311&DISPLAY=DOCS