Here we have a 16.00mmm2 T&E cable installed many years ago in a house, and it supplies a recently renewed consumer unit in an annexe. The cable runs under the first floor boards in notched wooden joists. The boards are about 15mm thick. There is no mechanical protection apart from the wooden boards. The cable runs centrally to the floor boards in the notched joists.
What is your opinion about leaving the cable where it is? It is backed up by a 60 Amp fuse in a switch fuse. There is no R.C.D. protection for the sub-main cable.
Z.
