Temporary capping off a live cable

[Nemo2000]

I'm adding a couple of downlights to an existing downstairs lighting circuit as apart of wider house refurbishment programme.

The location of existing wiring etc and the sequence of refurbishment work mean that I have to lift the floorboards in one room upstairs to connect the cable for the new lights into the existing circuit, then put that floor back down and in due course lift the floor in an adjacent room to access the new lights. So the intention is to get a long length of 1.0mm T&E and connect it into the appropriate junction box in the first room, then poke the 'open' end of the cable down the void under the floor of the adjacent room and leave it like that for a few weeks until I start work in that room and can then connect the 'open' end into the new downlight fitting. In the meantime of course the cable will be live whenever the downstairs lights are switched on.

So, what is the simplest safe way to cover the 'open' end of the live cable? I doubt that just cutting the end and wrapping insulating tape around it would be safe enough. I've thought about stripping back a short length of the outer insulation and putting the cores into a 3-way 'choc block' - would that be adequate? Some heat-shrink perhaps? Or am I over-thinking any potential safety issues?

 

[chivers67]

How big is the hole you wish to poke said cable down? I think what you've suggested will be adequate, maybe tape it up as an extra precaution.

 

[flameport]

This: https://www.tlc-direct.co.uk/Products/DEBOX2.html or something similar on the end of the cable.

 

[plugwash]

One of the quickwire junction boxes would be a safe, easy and relatively small soloution.

 

[Nemo2000]

I do have some small 'quick wire' JBs that I was thinking of using, just wondered if they would be necessary. The 'hole' is actually the space under the floorboards between two parallel joists, so plenty of room there once I can get the cable past the noggins