I have an old style rewirable MEM cream metal fuse box in my house.
The wiring in the house is all twin cable black/red with earth in between and I suspect that the house was rewired during the 1980s
On the fuse box there are TWO 30a fuses marked for sockets, but I notice that if I pull ONE of the two fuses out the sockets circuit is still live. Looking past the fuse there are two twin and earth wires feeding from each fuse.
My query: is this normal wiring practice or has one of the two pairs of twin & earth been wrongly connected for the past 30 years? eg should there be a separate ring main from each of the two fuses ?
I am about to get a quote for changing the fuse box for a more up to date and safer one, what should I be asking for?
Any advice appreciated to stop me from being ripped off.