I'm back wiring dairy sheds and a 2nd hand alternator turned up here last week.
It has a large diesel engine on the front of it, but when I spyed the name plate on it, it turns out it came from the US.
Single phase voltage is between 120 and 208VAC
Three phase voltage is between 277 and 380VAC. crazy
I'm not sure what to make of this machine, I never even bothered to have a decent gander at the actual machine itself.
All the farmer said was "Pretty Grunty, Eh!!" bash
Apparently it came out of a hospital, I have no idea which hospital it was.
Will get some pics and move this over to the Pics Submitted Area.

My understanding is, this was bought on the cheap and although the farmer has never heard it run, I think the diesel motor might be had it.

Your thoughts on the voltage though, over here we need a single phase voltage of 230VAC and a 3 phase voltage of at least 400VAC.
Sure this might only be a back-up, but I have a problem with wiring this at all.
Oh BTW, the alternator is 50Hz, just to make it more "fun".