That setup seems totally alien to me from an Irish perspective.
Over here cookers are most definitely considered a fixed applience so don't ship with a plug or even a cable in most cases just a notice saying that you must call an electrician to connect it.
They're conencted with 6 - 10 mm2 3-core cable. (Brown, Blue, Green & Yellow striped) and generally not UK style twin + earth in modern installations.
In general in Ireland anything that requires more than 13 A (or 16A in some instances e.g. workshops where CEE 17 is used) is hardwired for single phase anyway.
Any physically fixed appliences are normally connected via a fused and switched connection unit rather than a plug and socket. This would include things like wall-mounted convector heaters, fan heaters, hand dryers, etc etc. We often use these connectors for things that should not be plugged out like PABX systems, and IT equipment like file servers etc... can be quite useful on a UPS system.
3-phase is extremely rare in domestic installations other than where it is used to supply several heavy single-phase heating circuits, in which case it would be hardwired anyway.
In commercial / industrial setups red CEE-17 plug and socket system is used for 3-phase there is no alternative national connector system available.
Do most EU countries have these kind of "supersized" domestic electrical fittings?
