Most households here have 400V 3-phase for the heavy stuff like stove/oven, washer and dryer, Older households may only have 230V 1-phase, but that's usually only small apartments.
Also realize that a lower voltage with a certain current is more sensitive to voltage loss due to current if the current is the same, so your 110V 1760W plate may if you have a loss of 1V/A only put out 1500W. A 230V 1760W plate may at the same loss figures still provide 1700W (only 7.65A current for the same power)
And a 400V plate may see even lower loss since it will only draw 4.4A. (Assuming that the voltage loss per amp is the same, i.e. same wiring/fusing etc.)
It is actually easy to underestimate the actual loss of power in the wiring, fuses and switches to a heating plate causing it to provide less than the rated power.