I’ve been studying the power line heading out to Five Rivers Environmental Education Center. 🔌

It looks like there is a wye to the high leg delta transformer near Delaware Avenue and Orchard Avenue. There is three transformers with smaller than the other one, suggesting a high leg delta. From there, the step down transformers to houses which appear hooked phase to phase as there is no ground line to reference like you would have with a wye, as with along Delaware Avenue. The Environmental Education Center is hooked to all three phases with step down transformers wired as with a delta, so I’m pretty sure its a high leg delta.