Yes I was speaking of the orange but I meant two services with different voltages.
Of you use it for the 480, it would be confusing as the high leg of the 240.
I really doubt you would see both in one place.
The reality is that you usually only see high leg delta in places where there is a limited need for 3 phase and the PoCo is giving them the cheapest alternative. I have only seen one 240 delta with 3 transformers in 20 years of looking at them.
I assume they grew into it and did not want to rewire their equipment. It is behind the Hogs Breath in Key West and serves a couple customers.
Usually I see a big one for the 120/240 loads and a little one for the high leg.
I guess it might be different in other places.
