Interesting. Tell us more. Do you suggest running a UK 40 amp circuit at higher than 80% continuous load 24/7?
No. I suggest trying to refrain giving advice when you have no clue (or only assumed clues) of the actual circuit setup in a country with different electrical codes than yours.
There's only ONE RCD in the picture. The things labelled B40, B32 B20 etc are NOT RCDs. There's a reason why this profession is regulated.
