Live wire taped off in the loft.

[Goatus]

Afternoon all, new on here and hoping someone maybe able to offer a bit of advice?

I am flooring the loft at the moment in the loft, and there is a length of wire (grey 3 core) that has just been taped off and taped to the rafters. The wire is live (240v) but isolating the MCB for upstairs lights/sockets and downstairs lights sockets makes no difference so assuming it's not to do with them! I did wonder whether it was put up to faciliate loft lighting?

As mentioned it's a fairly new build house.

I'm a novice at this and am curious as to what it was and if anybody would know?
Many thanks
Nick

 

[westward10]

How do you know it is live?

 

[telectrix]

loftlight or maybe an aerial amp.youneed to find which MCB isolates it, then trace it back.

How do you know it is live?

wet finger test???

 

[ipf]

There seems to be a lot of tape around.
First question. How do you know the cable is live?
edit….late, it seems.

 

[Goatus]

Cheers for the quick replys!

Firstly im assuming as testing with a voltage tester / multi meter is bringing a reading of 237/240, although wet finger test would give a positive result I'm sure!

There are Ariel wires up there (as in the previous house) so thats another option! I shall continue the search!

 

[Pete999]

Any chance you could trace the cable route? when you say 3 core do you mean L,N and Earth?

 

[Goatus]

It comes up on the exterior wall side, which is also the side of the consumer unit (located down stairs in the under stairs cupboard ). Yes that's right L N and earth. I've attached an image of said wire, not that it will be much help!

Thanks again!

 

[telectrix]

Cheers for the quick replys!

Firstly im assuming as testing with a voltage tester / multi meter is bringing a reading of 237/240, although wet finger test would give a positive result I'm sure!

There are Ariel wires up there (as in the previous house) so thats another option! I shall continue the search!

who the hell puts washing powder in the loft, unless it's a funny place to get 'er indoors out the way, doing the weekly wash.

 

[Goatus]

Now you've got me thinking.... So im going to need sockets and plumbing put up there now....

 

[telectrix]

and some hefty cable for the weed farm

 

[westward10]

Looks like 2.5, not a lighting cable.

 

[telectrix]

oops, just seen it's a recent build.navigation through the jungle of weedy roof trusses and 2 ft/ thick itchy-poo needs a risk assessment, full bio-hazard suit, and a link to the local plod's missing persons department.

 

[Pete999]

It comes up on the exterior wall side, which is also the side of the consumer unit (located down stairs in the under stairs cupboard ). Yes that's right L N and earth. I've attached an image of said wire, not that it will be much help!

Thanks again!

View attachment 47424

Looks like it's 2.5mm2 that has been spurred from a socket in one of the bedrooms.
Try isolating the sockets upstairs, or is there a spare way in your fuse board marked up as loft supply or something that may look like it, probably a supply for a roof socket, get an Electrician in to identify and terminate it safely, left like that is dangerous. Simple 15 min job

 

[telectrix]

or get a plumber in. then it will never work again.... ever.

 

[Pete999]

Now you've got me thinking.... So im going to need sockets and plumbing put up there now....

Naa what a washing machine in the loft? daft idea, or was that a sarcastic reply?