We have some 2-bushing 277/480V overhead transformers in stock and would like to use them to install a 480V open delta bank (versus using 3-bushing transformers that have a center tap, which we don't have in stock). I'm not a transformer connection expert, but I'm thinking I can delta-connect two 2-busing 277/480V transformers and run the 3 legs for a 3-wire 480V service. I took a stab at the attached electrical diagram, but I'm wondering if the winding polarity will give me the correct voltage.
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