Whats this on the cut out?

[Welchyboy1]

I have seen this red single core cable coming out of the old cast cut outs quite a few times now and just wondered what they were?

Anyone know??

 

[freddo]

I wondered whether the service cable is actually 3- or 4-core. The installer might have been issued with SP+N terminal equipment and instructions to provide an SP+N connection, but had one or two extra cores available that were unconnected upstream. A stub of cable was then sweated onto the spare core(s) in case they needed to be brought into service in the future, and the fact it is physically a loop at the moment is not significant.

There's only one way to find out!