I didn't notice until quite recently that the electrician didn't have a one-for-one fitting MCB (16A) and had used whatever he had in the van. The box takes Merlin Gerins, and the 'bodged' in one was clearly a mismatch causing distortion to the cover.
Two weeks ago I got a MG replacement to swap out the mismatching one, and found that in order to get his MCB to fit the electrician had trimmed back the lug on the input copper busbar. Although the MG one seems to have a sufficient clamp on the reduced lug, I am concerned about this.
I've been in contact with the company and the electrician has admitted that he had to use another MCB type as he couldn't get an MG one, and he may have cut back the lug. I have said I would like an independent opinion on whether there is a hazard at their expense, but he is insisting that the company should be allowed to rectify matters themselves.
Collectives opinion please.