I would say this is rare around here and will only be found in places that are not accessible to the general public.
You would find this on large industrial properties.
We also had some installations close to this at the amusement park I worked at.
We had 4 locations with 4160 V primary 208 V secondary 300 KVA single phase transformers. These would be the type normally on a pole however they where on a fenced in cement pad.
