Underground Twin Wall Corrugated Data or Electrical Ducting

Question 1

Does the 50mm x 50m conduit have a draw string?

(DAVID COLLINS 18/10/2024)

(Callum 21/10/2024)

Answer

All 50m coils of our HDPE ducting come supplied with a draw string.

Question 2

Does the 63mm x 50m conduit have a pull string set up inside

(john musker 28/11/2023)

(Nathan 28/11/2023)

Answer

Yes, the full 50m reels have a draw string already installed and a draw string can be provided with the shorter cuts if requested

Question 3

Would this resist crushing by cars if it is laid or buried in a driveway and completely covered by gravel or stones?

(Rob Howard 03/09/2023)

(Nat 12/09/2023)

Answer

The Compression resistance of this ducting is ≥450N with vertical deflection equivalent to 5% of the original diameter.

Question 4

Can this be buried in concrete.

(Chris Paladino 02/08/2023)

(Neil Levett 18/08/2023)

Answer

It depends on the depth of the concrete. The compression resistance is ≥450N with vertical deflection equivalent to 5% of the original diameter (200mm samples). We would always recommend getting advice from a structural engineer before proceeding.

Question 5

Do you supply glands for the 50mm ducting, I need to terminate the ends into weatherproof plastic boxes ?

(Simon Williams 30/07/2023)

(Paul Jarvis 01/08/2023)

Answer

We do not currently have any glands available for this type of ducting

Question 6

I am thinking of using this to run EV ready armoured cable, along the lower part of a fence (to avoid having to dig a long stretch/ under a driveway etc)…do you supply clips or ‘u’ brackets so I could attach securely to fence posts?

(Jim 03/06/2023)

(Paul Jarvis 14/06/2023)

Answer

Unfortunatley we do not currently have any options for clipping this ducting but you may be able to source some waste pipe wall fixings of a similar size for this purpose.

Question 7

Do the couplers give a watertight seal?

(Dave Stevenson 27/05/2023)

(Paul Jarvis 31/05/2023)

Answer

The couplers do not give a completely watertight seal as they do not have any form of rubber gasket. They are simply designed to couple to sections of ducting together.

Question 8

I'd like to know whether this might be suitable to use in a pond filter set up, water pumped through at fairly low pressure, and whether it is solvent weld friendly?

(Adam Exton 13/04/2023)

(Nathan 17/04/2023)

Answer

I wouldn't recommend it for that. As it's not a smooth outer it would be hard to make a waterproof joint between sections.

Question 9

I need to run a water supply and return pipe for underfloor heating (22mm pipes) over a run of 5m. Would the 50mm option be too small? Should I opt for 2 runs if it is smaller diameter?

(Stephan 13/04/2023)

(Nathan 17/04/2023)

Answer

The internal diameter of the 50mm ducting is 40mm so it would be too tight. You could use 2 of the 40mm ducts instead.

Question 10

Hi there, are you able to supply samples of this? I only need a short length to see if it's suitable as I'm not planning on using it for conduit. a couple of inches would do fine.

(Hugo Robinson 22/02/2023)

(Nathan 28/02/2023)

Answer

Yes, we can send out samples. Please email sales@connectec.uk to request a sample.

Question 11

Hi, what temp can this pipe stand?
I was thinking of adding a heater which pumps air at up to 40℃.

(Alec 02/01/2023)

(Nathan 03/01/2023)

Answer

The ducting is suitable for temperatures between -10°C and +60°C so it will be fine for your use case.

Question 12

Would this be suitable for running cabling from a solar PV and battery system under the floorboards - from the rear of a terraced house (where the panels are) to the front (where the distribution board is)? It’s approx 10m.

(Graeme 09/09/2022)

(Nathan 20/09/2022)

Answer

Yes, this ducting would be suitable for most electrical or data cabling requirements.

Question 13

We are converting a barn and require service duct for water 100mm, Electric 125mm, Data/tele 50mm can you supply all relevant duct sizes.

(andrew nicholls 28/02/2022)

(Paul Jarvis 14/07/2022)

Answer

We currently only stock the duct sizes stated on the website and the maximum O/D is 110mm

Question 14

Is there any text on the outside of your ducting saying either "Electrical cable inside" or something similar? UKPN wants us to use ducting that carries such a label (in addition to the usual yellow tape higher up).

(KesterLester 12/07/2022)

(Paul Jarvis 12/07/2022)

Answer

Our black ducting does not have any warnings on the outside for high voltage.

Question 15

Would 40 or 50mm ducting be suitable for laying BT telephone line or a fibre optic cable underground?

(Musti 26/06/2022)

(Paul Jarvis 28/06/2022)

Answer

Yes, this ducting is suitable for all types of copper and Fibre data cables

Question 16

Is this OK to use on a training wall to add pebbles on top to help with drainage? Thanks

(Josie Clarke 01/05/2022)

(Paul Jarvis 03/05/2022)

Answer

We can not advise on the effectiveness of this for this purpose as it's recommended use is for the containment of cables.

Question 17

Do you stock the end caps for that ducting to prevent water getting in?

(George Dorrell 28/03/2022)

(Callum 31/03/2022)

Answer

Hi there,

We do not currently stock end caps for ducting, however this is something we will look into supplying in the future.

Question 18

What is the external dimension of the conduit please if the ID is 40mm?

(Deryck Lynn 26/02/2022)

(Paul Jarvis 01/03/2022)

Answer

The ducting sizes listed on our website state the overall diameter not inner. The inner diameter is typically 8-10mm less than the outer e.g the 50mm ducting has an inner diameter of 40mm

Question 19

Does the 50mm ducting includes a drawcord to pull through cables easily?

(eric 27/02/2022)

(Rob 28/02/2022)

Answer

The draw cord comes with a full reel of this ducting and when smaller quantities are ordered you can specify to leave the draw cord in

Question 20

Do you do shallow bends to terminate your 100mm duct into a plinth

(Mike 22/02/2022)

(Paul Jarvis 22/02/2022)

Answer

Unfortunately we do not currently stock any bends for our underground ducting

Question 21

Can the couplers (50mm ones) be sold separately?

(Stephen 10/01/2022)

(Paul Jarvis 10/01/2022)

Answer

Please contact our sales team on 01978 806111 and we should be able to assist with this.

Question 22

Can I run mains 25mm water pipe through it.

(Dermotmccartney 04/01/2022)

(Paul Jarvis 06/01/2022)

Answer

Yes, there is no reason why you can not run a water pipe through this ducting. I would recommend the 50mm as this has a 40mm inner diameter allowing for more room if you require slight bends

Question 23

Can this conduit be terminated at a junction box (such as a WISKA box) with a secure and water resistant method? Is there a specific gland I can buy to do this?

(Nick Granger-Brown 23/12/2021)

(Paul Jarvis 23/12/2021)

Answer

We are not currently aware of any IP rated glands for terminating this underground ducting. It would typically be pushed into the underground inspection pit boxes that we sell.

Question 24

I need a duct for a fibre cable is your 50mm HDPE Twin Wall Underground Ducting adequate and if so what's the max length, I need 30m. Can pick up as live in Whitchurch Shropshire.

Gary Chesters 07817 148692

(GARY JOHN CHESTERS 17/12/2021)

(Callum 22/12/2021)

Answer

Good morning,

Providing the thickness of the cable is suitable for the internal diameter of this ducting, this will be suitable. We can supply this ducting in continuous lengths of up to 50m, so 30m will be no problem.

Kind regards

Question 25

What size of duct would I need for 6mm armoured cable ?

(David innes 16/12/2021)

(Paul Jarvis 17/12/2021)

Answer

The typical overall diameter of 6mm armoured mains cable would be around 16-17mm. I would recommend that you either use 40mm or 50mm twin wall ducting. If the duct will be installed around corners I would recommend going for the larger size.

Question 26

What is the minimum bend radius of both the 50 and 63 mm ducting?

(George 09/12/2021)

(Paul Jarvis 14/12/2021)

Answer

The minimum bend radius is 8 times DN or OD

Question 27

I would like 20m of 14942 NRO 75mm underground ducting in one piece , is this possible? How do I specify this when ordering than you Tim Rees.

(Tim Rees 29/11/2021)

(Callum 29/11/2021)

Answer

Hi Tim,

This can be done by selecting 2 lengths of 10m and requesting that this is cut as 1x 20m length in the comments section during checkout.

Kind regards

Question 28

Are you able to supply a 15 metre single length of your 50 mm conduit.
Regards Wilson

(Wilson G Scudamore 07/10/2021)

(Paul Jarvis 07/10/2021)

Answer

Yes we automatically ship as one length. If you order a 10m and a 5m length, this will be shipped as one 15m length

Question 29

Is this perforated and would it be able to carry non pressurised water from a gutter

(Martin Cole 04/10/2021)

(Paul Jarvis 05/10/2021)

Answer

The ducting isn't perforated and should be watertight. It is corrugated on the outside and smooth on the inside. It is designed as a conduit for cables but I can't see why it wouldn't work for this purpose.

Question 30

Hi, is this good enough for underground swa cable to EV charging unit

(amrit 01/09/2021)

(Nat 02/09/2021)

Answer

Yes this is suitable for electrical or data cables underground

Question 31

Hi. Is it cuttable so I could make it split along it's length?

(Sean Nagle 24/07/2021)

(Callum 01/09/2021)

Answer

Hi Sean,

All of our ducting is cuttable so making the incisions that you require will be no problem.

Kind regards

Question 32

What size ducting would I need to put a single telephone cable in and could I put a run of i
100m without a chamber . Many Thanks Rob

(robert armishaw 28/08/2021)

(Paul Jarvis 31/08/2021)

Answer

I would recommend the 40mm twin wall ducting for this.

Question 33

Is the twin wall flexible. Do you sell 50mm to 50mm adaptors?

(Gil 08/07/2021)

(Callum 19/07/2021)

Answer

Hi Gil,

This ducting is reasonably flexible and on the larger rolls (50M) will come with the couplings.

Kind regards

Question 34

Hi do you do 110mm flexi ducting rolls in Red ? I need 13 rolls (650)

(Sean Stringer 19/07/2021)

(Callum 19/07/2021)

Answer

Hi Sean,

Unfortunately we have now discontinued our red ducting, and the last rolls we did have are now sold out.

Kind regards

Question 35

Hello I’m about have a patio
With a shed at far end
My spark can’t do the armour cable B4 he on holiday
so would this be ok to put under patio to run 6mm armour through

(Mark 16/07/2021)

(Paul Jarvis 16/07/2021)

Answer

Yes this should be suitable but ensure that there is some mains warning tape above the ducting if possible.

Question 36

@Paul Jarvis. You mention buying inspection pits to join the ducting but do you have a recommend product that would work for the 50mm ducting?

Thank you in anticipation

(Pete Allen 02/06/2021)

(Paul Jarvis 21/06/2021)

Answer

We have a small range of inspection pits in stock. please call our sales team on 01978 806111

Question 37

Can I get 15m in one piece by ordering 3x5m?

(Derek 27/05/2021)

(Paul Jarvis 28/05/2021)

Answer

Yes. If you order the quantity you require either 2x10m and 1x 5m or 3x5m, them put a comment in the comments box at the checkout to state you would like this as one length.

Question 38

The 40mm would it bend say 90 degrees ?
Maybe with some heat applied?

(ishaaq lorgat 24/04/2021)

(Nathan 24/04/2021)

Answer

The ducting would almost certainly kink severely at that angle making it very difficult to pass cables through so I wouldn't recommend it

Question 39

Is this product flexible despite its twin walled strength.

(Andrew Scholes 19/04/2021)

(Paul Jarvis 20/04/2021)

Answer

The twin wall is very tough and is designed to be crush resistant. As a result, the flexibility is limited. You can bend and manipulate the ducting and the smaller diameter has a better bend radius than the larger diameter.

Question 40

Do I need couplings to join the ducting , I need to connect to a number of points to supply auto gates

(Irving Parry 27/03/2021)

(Paul Jarvis 29/03/2021)

Answer

We would recommend using inspection pits to join your ducting as this makes pulling cable through much easier. An inline coupler is supplied with a full 50m roll of our twin wall ducting.

Question 41

Can i use this as an underground sewer pipe?
I already have a 150mm ID pipe traversing under a trunk road. I need to get an SWA cable under the road using the sewer pipe and was thinking of buying this 110mm flexible pipe allowing enough room for the 15mm SWA cable to fit inbetween.
Could this pipe be used as a sewer pipe, given that it is chemical and water resistant?

(Alan John Rodgers 06/02/2021)

(Paul Jarvis 08/02/2021)

Answer

As this cable ducting is designed to be buried in the ground, we do not see why this could not be used within another pipe. We cannot guarantee that it's chemical resistance will be sufficient as it is not normal practice to install this submerged within a sewer.

Question 42

Does this come with draw string already in?

(Joshua Stainsby 30/01/2021)

(Paul Jarvis 04/02/2021)

Answer

Our twin wall ducting is supplied with a draw string when a full 50m roll is purchased. Shorter cut lengths are not supplied with a draw string.

Specification
Material	High density polyethylene (HDPE)
Colour	Black
Use	Low tension electrical and communication/data cable protection in buried underground systems
Max bend radius	8 times DN or OD
Quality mark	NF-USE
Standards	CEI EN 50086-1 CEI EN 50086-2-4 (Type N) EN 61386-24
Compression resistance	≥450N with vertical deflection equivalent to 5% of the original diameter (200mm samples)
Impact resistance	Type N at -5°C / 3kg/h (variable with size)
Temperature Range	-10°C to +60°C

RBF0179	40mm x 1m (Per meter) - Black	£3.56	In stock
RBF0019	40mm x 50m - Black	£77.22	In stock
RBF0180	50mm x 1m (Per meter) - Black	£4.46	In stock
RBF0020	50mm x 50m - Black	£86.66	In stock
RBF0021	63mm x 50m - Black	£94.38	Ordered on Request
RBF0022	75mm x 50m - Black	£103.82	Ordered on Request
RBF0023	110mm x 50m - Black	£163.02	Ordered on Request

Underground Twin Wall Corrugated Data or Electrical Ducting

PRODUCT DETAILS

Why buy from Connectec?

Code	Outer (mm)	Inner (mm)	Coil (m)
NR040	40	32	50
NR050	50	40	50
NR063	63	51	50
NR075	75	61	50
NR110	110	94	50