RSA stoves were capable of being wired up to 3 phase wye though I never saw one thus wired. They came supplied with a busbar connecting the three loads - usually two hotplates each on two phases and the oven, grill and ancillaries on the third.
There are quite a few units like that on the British market these days, obviously intended for 3-ph operation in Continental Europe.
Some of the older British models were supplied in an export version too. There were four terminal positions on the chassis, but the U.K. version had a terminal fitted only to the L1 and N positions.
These are the ones where each circuit comes back to the terminal block with 1/4-inch connectors, so the export version would have been a simple matter of fitting extra terminals in the L2 and L3 positions and connecting the lugs to distribute the load appropriately.
[This message has been edited by pauluk (edited 07-31-2005).]
