My residence is supplied with single phase power. The previous owner installed a single phase to 3 phase converter to run a 12 ton compressor (Phase Perfect PT355). I am getting rid of the 12 ton compressor and replacing it with 3 5-ton compressors. I can buy these in single phase or 3 phase.
Correct me if I'm wrong but if I'm taking single phase power, converting it to 3 phase power, and then running compressor, I'm not gaining any efficiency. Any increased efficiency of 3 phase compressor is going to be offset by the losses in converting from single to 3 phase.
The sticker on the converter reads: Input 240VAC, 50/60Hz, 1 phase 98A; Output 240VAC, 50/60Hz, 3 phase 55A. Also, the single phase compressors have a 10 year warranty, while the 3 phase units have a 5 year warranty.