Hi,
Managed to drill a very neat 6 mm hole through one cable and singed another cable next to it a little bit. Both cables run down a wall into a normal recessed two gang light switch that controls (two way) the upstairs and downstairs landing lights and used to be "protected" by metal sheathing but are now exposed as I have removed both plaster and sheathing.
Seems to be the downstairs light affected as the upstairs light works ok. Have now fixed the 5 amp lighting fuse which blew and, I think caused the singing, now all seems ok except the downstairs light does not work anymore!
The 6 mm hole in the cable is approximately two inches (50 mm) below the ceiling level. Both of the cable run down to the switch about 3 feet (900 mm) below.
I would like to attempt a fix for this and wonder what sort of mechanical joint repair I could make and then sheath and plaster over? Would for example a simple plastic connector be ok?
Ideas gratefully accepted. Thanks for your time.