To alter the wiring of some downlighters in our kitchen/dining room, I need to pass a wire from downlighters on one circuit across to a couple of lights currently on another circuit.
The problem is it's a vaulted ceiling with no access above (short of lifting roof tiles) and I'll have to cross a couple of ceiling joists. I could cut the plasterboard and "stitch" the wire over and then replaster but I'd rather not. If I could find, make or adapt an existing drill to make one at least 700mm long, I could probably drill obliquely from both ends through the existing downlighter holes and thread a wire through.
Does this sound reasonable? I've found drills up to 600mm on line but they're not going to be long enough.
Tim