Steve, I am not sure the idea of the PoCo using the earth as a conductor is really that good an idea. I bet that is a major source of "stray voltage". Any place that uses wye distribution will see some voltage imposed on the dirt ... plus the parallel path from the building ground to the pole ground. I actually had a guy who should know better tell me that was why "all" PoCos used delta distribution. Evidently he doesn't get around much.
