A breaker at my old apt in Boston kept dying (not tripping) randomly. Landlord was dragging his feet about the issue and was only really willing to replace the breaker and tell us weird s**t like don’t use the microwave with a hairdryer. Got sick of it so I called an electrician myself to trace the line and see what was causing the problem. Turns out all the wiring was done not to code and not even safely. Pro showed me a softball size bundle of wires in the suspended ceiling (it was just sitting on one of the tiles) that had lines from 2 breakers leading in and 7 lines leading out to the bathroom, kitchen, hallway, and one of the bedrooms. The pro took photos to report all the code violations and called my apt a death trap. We all moved out within a week.
