With the power off an electrician would take faceplates off and disconnect the first socket, then reapply power, and see if the fault manifested in the now radial circuit. If it doesn't then you know it's the cabling from CB to first socket, if it does, keep going along, moving the open point of the ring/radial until the fault is located.
ok, ring fixed wiring suspect.
With the power off an electrician would take faceplates off and disconnect the first socket, then reapply power, and see if the fault manifested in the now radial circuit. If it doesn't then you know it's the cabling from CB to first socket, if it does, keep going along, moving the open point of the ring/radial until the fault is located.