C-H,
It's been probably 10 years since I've done any line work, and I can't remember the size of those oil filled transformers. My guess would be 250 KVA. These particular transformers were installed in a chemical plant out in Crosby, TX. The plant had Medium Voltage through out, and instead of underground feeders to and from their switchgear they had it strung out overhead. Well, everywhere they needed to use the power throughout the plant, the would set a pole with transformers, run conduit up the pole, and pick up the secondary side of the transformers for their motor control centers, or whatever else they used. You mentioned the poco above. These transformers belonged to the plant.
As a matter of fact, all the medium voltage work that I've done (which is not much), was done in chemical plants, with the exception of a 4160 volt pad mounted transformer that I hooked up once. It was at a research center, or engineering facility of some sort.
I've been transformed,
Doc
