The balcony ones are usually lower power a set (500W to 800W).
The higher the power, the higher the current given the fixed voltage. You’ll need thicker wires, different breakers, better heath insulation, etc.
Then there’s the jackass enthousiasts that plug 5 of these things into a single extension cord to take into account.
Location is Belgium. And the example image in that wikipedia page is from Belgium, too :)
Could be, I’ll keep my eye open. Thank you