> 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.
It was our friend "Belgian" who mentioned it on the forum here a few months ago. I can't remember if it was where he lives or somewhere nearby which he said is still wired this way..
Eli, if you're reading this, perhaps you could help us out!
but also Saudi Arabia, have 127/220V (60 Hz) as one of several systems.
I should have remembered that one. They seem to use British fittings for some (all?) of their work, and the MK (British) catalog lists UK-style dimmers for 127V, as well as NEMA 5-15 configuration receptacles but on a British plate.