This is in a special needs school. Screwing a MCCB panel back to a wall is overkill anyway, so they just chucked it into a false ceiling void and spread the load across some battens. It’s still juiced up and been like that for over 20 years.
At a secondary school, this is a MCB which has been siliconed onto the side of a dimmer unit enclosure. I spotted this within a month of the dimmer unit going in but all of a sudden everyone involved, from contractor to site service manager to governors suddenly turned into the three wise monkeys. They didn’t feel too clever though when the application for the entertainments licence was turned down because of it, and they had to cancel the show for which all the tickets had already been sold.