A quick question - would 25mm oval conduit be sufficient mechanical protection to run cable in an internal cavity wall?
Dont like it.
Anything in a cavity that shouldn't be there has the, very real, potential to bridge and cause damp.
Personally I’d avoid putting a socket in the cavity unless you have a very slim client!well basically one end of the cavity is currently open so it easy to run the cable - I am running it down from the ceiling to a socket in the cavity wall
Was done as a norm many moons ago any evidence ot danger????Describe your internal cavity wall to us . Is it part of en extension where an external wall is now no longer external ?