Hi

My kitchen ring main has a broken earth somewhere. There is a suspect region
where a spur feeds off the main ring to feed a single socket above the
skirting board. We think there must be a junction box hidden in the floor
(concrete), behind the skirting or buried in the wall that makes this
connection and maybe the fault is there.

I need to trace the spur wiring. I have tried using my Draper cable/metal
detector but it is not up to the job. I've seen a recommendation from Andy
Hall for the Zircon stud detector, but I think that is more aimed at
detecting voids. Would a Cable Avoidance Tool be my best bet?

I may have to take the skirting off. What is the cleanest way of doing this?

Thanks

David