Actually, yes day one I pulled the cover off the gutter and checked the connections there. That is where they connected the GEC to the neutral. The box to the far right is just a pull thru for underground feed. There are no transformers in the building. The one transformer that feeds this building feeds two others as best I can tell. Yes, it is a 3-phase service with no high leg. Tomorrow I'm going to shut off both mains and see if there is any voltage neutral to ground. If there isn't I'm going to take Lostazhell's advice and ring out the neutral and feed wires. If I'm still getting voltage I'm just going to tell the owner to call someone else.
Many thanks
