I am working with a trans. that is 208 primary and 277/480 secondary,3ph Delta-Delta. I need a nuetral for some of the 277v loads. The trans does not have a X0 connection. The service that the trans is fed from is 3 ph 4 wire 120/208 and is close by. I have not dealt much with this type of transformer, but from reading some posts it appears that I might be able to derive a nuetral? If so how would I accomplish this.I do need the 480v 3 PH without a nuetral for some loads, I only need a nuetral for some 277v single phase loads. Thanks for any help.