PaulUK:
> Belgium still has 220Y/127 distribution, but now with all loads connected phase-to-phase to get 220.
I wonder where you found this info. It might be the case in a couple of small villages and even very local areas of old towns (though I doubt it) but 127V is an obsolete standard and it is very rare now. Perhaps the source of your info is quite old.
Nearly all domestic or small commercial supplies (eg for shops) in Belgium have supplies at 230V line-to-neutral or 400V line-to-line, with three phases being common for larger houses. The nominal supply voltage was altered from 220 to 230 some time back.
