Hello. New here. I just bought a 2003 Mep804a with isuzu diesel for a backup for my home’s geothermal heating and other power needs. Then I realized from here it’s only three phase and inconvertible to single. I want to use its full capacity if needed. What would I look for in a transformer beside kva to hook it up? Props for any exmilitary units I can find that are emp proof which is why I bought this unit. I need 40 amps minimum 240v to power my geo if stuff gets wild at -20 temps in January. I see some on govplanet that are 460delta to 460wye/266 but not sure if that is what i need.