I can't imagine how you can have a wye without a neutral and 208 always means wye doesn't it? That is how it gets grounded. Is there 208 floating delta somewhere?
No, not really, but wye only means the transformer has a grounded star point, there is no need to provide a neutral conductor anywhere in the system! For example if you only have symmetrical 3ph loads or all loads are connected in delta (don't forget, a wye system allows you to connect loads both in wye or delta) you won't need a neutral conductor. That's why European motors only have a 3w+ground cord supplying the three phases. Old 3ph plugs didn't even have a neutral terminal. So maybe you need to go all the way up to the transformer.
