Sorry Trumpy. Apparently something didn't translate correctly. {Used Alt-0248 for a lower-case phi from Windows 2000 "Character Map."}

"Trumpy — In your region, what is the unusual breakpoint in rating for 1-phase versus 3-phase hermetic compressors in residential and light commercial facilities? Single-phase is typical for up to 5 tons [60,000 Btuh] in the western US, although 3-phase hermetic compressors are readily available in 2-or-3-ton and up."