I'm currently renovating an old house and I've taken the decision to rewire it at the same time (The current wiring is much newer than the house, but isn't to the standard I'd like). I'm very keen to make this is a one-time event and, as this is intended to be our family home for some time, there are a few things I'd like to futureproof.
A particular example would be the shower - it's currently fed from the central heating boiler. I'm sure this is fine, but there's no provision for an electric shower at all. I'd like to run some 10mm cable from the ground floor (Where the consumer unit is) through to the loft, 'terminating' it above the bathroom. It will be unconnected to anything at both sides (Here in the UK, Showers are on individual radial circuits) - but in future a shower could be installed, and an additional circuit breaker added in no time.
My concern is that a random 10mm^2 cable will look VERY suspicious and will rightfully concern anyone in the future. How I do safely and clearly terminate it - ensuring that it's clearly marked up for the future and is both perfectly safe should someone accidentally connect one end.
I'm currently thinking I should put both ends into junction boxes, marked with a printed label. And then perhaps mark all areas where it may be visible (I.e., in the loft, under the floorboards and in the consumer box cupboard) with some kind of identifying tape.