Thanks C4S and Rick. This is really frustrating. As above, I found a used GE .75 KVA B-B transformer that the guy used it for exactly what I want to do.
GE 9T51B0129 Buck Boost Transformer .750kVA, 1-Phase 120/240V 16/32V
Have called around to different electrical supply houses and used Rick's calculator and am getting conflicting info.
I just talked with the resident B-B expert at Platt and we worked out the math and he said I needed this unit, a .75KVA transformer:
https://www.platt.com/platt-electric-supply/Buck-Boost-Transformers-120-X-240-12-24/Acme/T-1-81052/product.aspx?zpid=1332
When I told him I was calculating out to 7.5, he said look at the catalog page, here it is.
Thoughts?
