In the US the "winky" receptacles that go (-|) or (⊣|) - except the T faces the other way - are 20 amp outlets, 120 volts. every receptacle that differs from the "shocked face" means something. Our standard shocked face receptacles are 15A. In hospitals, you need a guarantee that your monitors or assistive devices aren't going to trip a breaker somewhere if someone plugs in a vacuum; making it impossible to use the receptacle for something else is something that only matters after it's too late, i'd think.