Underfloor conduit for kitchen island unit?

[FatAlan]

Any recognised / best practice methods / conduit types for routing cables under floor. I’m looking to feed an island kitchen unit so will be looking to supply an induction hob and sockets.
Will be a completely new floor with insulation on top of concrete, underfloor heating pipes, screed with stone tiles on top.

 

[MDJ]

Stick 25mm2 galv conduits in and put a draw wire in, however if the supply to the hob needs to be more than 6mm you will have to think again, PS, make sure the conduit is in one piece without any couplers and make sure any bends flow and are not tight.

 

[Strima]

As MDJ has suggested, last one I did I ran the 20mm2 conduit from a 100mm galvanised box so I could connect T&E to singles and also earth the containment. The other end went straight to a double socket but again a galv box could be used.

 

[Midwest]

I'd put in some plastic conduit, but not above the ufh.

 

[rapparee]

I'd put in some plastic conduit, but not above the ufh.

I did similar when I had to wire up a dentist chair

 

[FatAlan]

As MDJ has suggested, last one I did I ran the 20mm2 conduit from a 100mm galvanised box so I could connect T&E to singles and also earth the containment. The other end went straight to a double socket but again a galv box could be used.

Presumably singles are easier to route through the conduit than T&E?

 

[FatAlan]

Obvious route has to be in the the 50-100mm insulation layer under the heating pipes.

 

[Strima]

Presumably singles are easier to route through the conduit than T&E?

There are, but I also had some 2.5 sat in the back of the van doing nothing so might as well use them.

 

[Leesparkykent]

We just use 40mm twin walled duct.

 

[Midwest]

Obvious route has to be in the the 50-100mm insulation layer under the heating pipes.

Is your base floor already laid. Might be a bit of a faff putting any conduit in the insulation.

 

[buzzlightyear]

I'd put in some plastic conduit, but not above the ufh

what about 1/1/4 plumbing pipe.

 

[Toneyz]

We just use 40mm twin walled duct.

What is that Lee?

 

[buzzlightyear]

We just use 40mm twin walled duct

what is that Lee .

 

[Squid]

Fancy name for Kopex I believe......

 

[Toneyz]

Depends upon the thickness of insulation but a minimum of 25mm conduit.

 

[rapparee]

what is that Lee .

Street lighting ducting I think?

 

[buzzlightyear]

Street lighting ducting I think

that's to big to going the floor unless you are drilling for oil.

 

[Leesparkykent]

what is that Lee .

Cable duct.

 

[Leesparkykent]

Fancy name for Kopex I believe......

Kopex is a brand and it’s not the same. Twin walled duct is smooth in side and not corugated on the inside like some flexible conduit. Being smooth it’s easier to pull cables through.

 

[Squid]

Kopex is a brand and it’s not the same. Twin walled duct is smooth in side and not corugated on the inside like flexible conduit. Being smooth it’s easier to pull cables through.

Wheres the fun it that........ ;o))))

 

[FatAlan]

Is your base floor already laid. Might be a bit of a faff putting any conduit in the insulation.

No, just the initial concrete slab. Floor a few weeks away as recently decided that we need a new roof!

 

[Midwest]

No, just the initial concrete slab. Floor a few weeks away as recently decided that we need a new roof!

You'll need to think where to lay you conduit etc, where you have the insulation & ufh. Now's the time to plan. And make sure the kitchen designer, doesn't change her mind.

 

[MJPD29]

Agree with Lee, as long as bend are sweeping it makes any cables easy to pull through and Fenty of space

 

[Squid]

Agree with Lee, as long as bend are sweeping it makes any cables easy to pull through and Fenty of space

Whats a "fenty" out of interest?

 

[FatAlan]

F is the new Pl. Didn’t you know? Part of the new regs.

 

[steve]

Grey area this one and a judgement call. I have used plastic conduit in the past.

 

[MJPD29]

Whats a "fenty" out of interest?

Lol auto correct on my phone, plenty would be right not Fenty

 

[magnoliafan89]

With regards to the whole situation im assuming its to be run in conduit for protection against physical damage, thermal damage etc? And also how come it has to be under the ufh?
Cheers guys

 

[Midwest]

With regards to the whole situation im assuming its to be run in conduit for protection against physical damage, thermal damage etc? And also how come it has to be under the ufh?
Cheers guys

How else would you install the cables?

Apart from the ufh unnecessarily warming up the cables, the conduit etc might effect the heating screed/slab and possibly weaken it. You should check with the manufacturer, if you intend to do so.

 

[magnoliafan89]

Well through conduit im not a complete ----ing moron so no need for the sarcy response was simply asking for what other reasons than what id already stated. As ive said before im still training

 

[Midwest]

Well through conduit im not a complete ****ing moron so no need for the sarcy response was simply asking for what other reasons than what id already stated. As ive said before im still training

I wasn't being sarcastic, I just asked a question? And I did reply to your second question, perhaps I shouldn't bother trying to help you anymore

 

[FatAlan]

I’d also be concerned that whatever containment is used, it is also water tight as kitchen floors do occasionally get wet.

 

[Octopus]

Definitely below the UFH and if its a slab, below the insulation .

tin hat on

 

[Dave OCD]

I'd agree with that, or maybe a nice bit of 25mm galv down from the ceiling right into the middle of the island, customers would love that.

 

[FatAlan]

I'd agree with that, or maybe a nice bit of 25mm galv down from the ceiling right into the middle of the island, customers would love that.

Sounds good to me. I’ll see if my Mrs will go for the industrial look.

 

[Dave OCD]

There are probably some people who'd like that all joking aside mate. It could even be painted a nice bright colour.

 

[Toneyz]

Pole dancing in the kitchen

 

[Dave OCD]

I'd throw him out and tell him to go dance in somebody elses kitchen.

 

[pirate]

"F is the new Pl. Didn’t you know?"
Ah, that's why I'm being constantly told to pluck off...

 

[leo79]

I'd agree with that, or maybe a nice bit of 25mm galv down from the ceiling right into the middle of the island, customers would love that.

Been there, done that (at customers request).

 

[FatAlan]

Been there, done that (at customers request).

Actually, thinking about it a bit more you could create some sort of framework / H frame to hand pots and pans on.

 

[Dave OCD]

Get your tin hat on sharpish mate , you'll be advised that conduit isn't designed to support additional weight of any sort apart from a very small spider- most likely with reg numbers quoted, and it would most certainly need a 50mm2 main bond back to the DNO transformer.