I have been moving some sockets and have a question about cable.
The existing cable used to wire the ring circuit looks a lot like moderm cable, i.e., grey sheath, twin core and earth. It is 2.5 mm cable, however it the cores are not single stranded, they are multi-stranded (a bit like a modern 4 or 10mm cable). Also the cable is a bit more flexible that the new cable I am using.
Is the above likely to be rubber, or was earlier PVC coated cable more flexible?
It does not appear to be crumbling, which I was told was a sign of very old rubber wiring.