I'm very new to solar (and electricity in general), so please excuse my ignorance. :) I've been researching as much as I can, but I still don't understand phasing (among a great many other things).
I have a mini-split A/C unit that I'm adding to my RV. (My RV is gutted, so I'm starting from the ground up.)
The manual for my A/C unit says it requires 240VAC single phase 60Hz.
Here's what I don't understand: if I have a Multiplus 24/3000/70 120VAC, can I use an autotransformer to take 120VAC from my multiplus and turn it into 240VAC single phase for my A/C?
Or, would it be better to get the 240VAC Multiplus and step down for all my 120VAC loads?
I also can't seem to find whether or not using an autotransformer results in a loss of efficiency.
Thanks for your help!