Banging on the wall the breaker box is on could cause a breaker to trip.
If they are not working on that wall and breakers trip I am puzzled.
Same here. You have to really bang them to trip mechanically. I mean try to trip them yourself – flip one – those springs are damn stiff until heated up by overcurrent. Once hot they go easy but not cold.
Bertogliat definitely has a good reason to ask the contractor.