if it’s permanently installed high power device, it only makes sense to wire it directly, like it’s done with ovens, and EV charger draws even more power. why there’s even plug on the way there? it’s not gonna be moved anyway. and while we’re at, why you people don’t have three phase circuits for big loads like this? standard euro five wire three phase 32A circuit (or plug) gets you 22kW, that plug tops off at 9kW