I believe this is your meter cupboard!
As posted by you on 23/8/2023 “Only Ohme being offered at the moment”
I remember you asking what the box was and me asking, what was on it, as it was unusuall to see one fitted to single phase as, they are usually seen on 3 phase supply to balance the the loads. Although they can be fitted to single phase supply’s they are at extra cost as they aren’t included with the charger and they aren’t cheap. Or something along those lines