Pygmalion je napisal:
Conduits present in my flat are 18 mm internal diameter PVC tuboflex
conduits for concrete installation. They run all along flat, and they
are most probably connected at two places using usual insulating tape
(I guess this is not regular installing procedure). I tried to pull
one cable out of the conduit and I failed to move it out. Maybe I did
not use enough force.


I have just realised that conduits used for electric installations in
my flat are corrugated conduits.