Running cable under floor

[Andy_O]

Hi all,

Am replacing a length of cable under my floor. It’s concrete slab with a wooden frame filled with insulation.

How best should I run the cable. This is a ring main.

Under insulation in conduit, over insulation clipped to frame?

Thanks

 

[John D v2.0]

I'd clip it to the side of that frame assuming it's 2 inches deep. Depends where it runs from and to though.

 

[sparkwright]

Over the insulation. Conduit seems a lot of effort for nothing.

Clipping the cable to the wood may help to prevent the cable being surrounded by insulation, though cable shouldn't be nailed into easily by flooring nails.

Dimensions of wood may be helpful for a perfect answer.

On the other hand how much analysis should be thought about here? See you after 12 pages.

 

[Lectrician]

Just as that pipe.

 

[JohnW2]

On the other hand how much analysis should be thought about here? See you after 12 pages.

It's interesting that many/most of those 12-page analyses/debates relate to the fact that some people seem to feel that it is absolutely essential to comply very strictly with the letter of regulations - which are quite often written in ways that leave some scope for interpretation (and hence debate/argument).

Such analyses/debates often relate to issues (such as the topic of this thread) in relation to which I would not waste a second of 'analysis' about the regs if it related to work in my own house - I would simply get on and do whatever I considered to be sensible/'safe' (whilst also knowing what the regs 'actually say'). In private, I would probably give the same advice to someone else, but if I (or anyone else) did that here, I would often be heavily criticised, and drawn into all sorts of time-wasting discussions/arguments. It would not surprise me if this very post results in all sorts of discussion about my 'irresponsible' attitude!

Kind Regards, John

 

[sparkwright]

Let the debate begin!!

 

[ban-all-sheds]

It’s concrete slab with a wooden frame filled with insulation.

Is there more insulation to go above what is there in the photo?

 

[skenk]

Most of the 12 page debates are sleep-inducing off-topic or barely relevant rubbish from 4 or 5 posters, the original enquiry having typically been resolved within the first few posts and other useful information lost in the babble.

 

[Andy_O]

No additional insulation going in. Am Just going to replace the insulation that you can see is missing in the photo and then put back the t&g flooring. I will eventually put tile or laminate flooring on top.

Wooden frame is 2”x2”.

 

[JohnW2]

Most of the 12 page debates are sleep-inducing off-topic or barely relevant rubbish from 4 or 5 posters, the original enquiry having typically been resolved within the first few posts and other useful information lost in the babble.

As one of the culprits, I agree. As I've often said it's a pity that, unlike the situation in many a forum (including several that I have managed over the years), the mods seem not to have the facility and/or inclination to split off the 'subsequent discussions' into separate threads - for people to follow or ignore as they wish.

Kind Regards, John

 

[Jackrae]

And just to diverge off topic, that T&G chipboard will squeak like hell unless you glue all the joints, brace any unsupported mating ends and use decent size screws (5mm diameter) at ridiculously close intervals to fix it down.

 

[JohnW2]

And just to diverge off topic, that T&G chipboard will squeak like hell unless you glue all the joints, brace any unsupported mating ends and use decent size screws (5mm diameter) at ridiculously close intervals to fix it down.

... but, if he did glue all the joints, he'd never be able to get it up non-destructively (e.g. if he ever needs to do something with/to the cable he is about to bury under it). There are pros and cons to so many things!

Kind Regards, John

 

[EFLImpudence]

and then put back the t&g flooring.

I may be wrong, but do people call chipboard t&g flooring.

Surely floorboards as it has already been lifted.

 

[Iggifer]

I may be wrong, but do people call chipboard t&g flooring.

Surely floorboards as it has already been lifted.

It has tongues and grooves as traditional floorboards do so it gets called both IME. Give me proper floorboards any day!

 

[EFLImpudence]

I know it has t&g but didn't think people would refer to chipboard as that.