Doug71
Established Member
Just burrying cables in plaster was just all to common once upon a time in the Uk, what made it so much worse was they did not just run vertical but also horizontally and diagonally. It does still happen, I have seen places where they have cliped cables to a wall and then the plasterers have slapped there dot and dab boards over the top.
There is a small estate of houses near me which were built in the 70's, they all have wall lights around the living room instead of pendants hanging down. The cables just run horizontally between the lights which is bad enough but the worst part is where the run is broken by a window the cable runs diagonally down from the last light, under the window board and back up diagonally to the next light