PVC Conduit Question

[westward10]

Hey mate,

Quick question, what do you mean by use sets?

Bends or forms you make with a bending spring.

 

[DPG]

Buried or surface?

Surface conduit on external brick wall isn't it? Can't see him chasing it in!

 

[westward10]

I understand what you mean. It’s just the bends I am struggled with. Would flexible conduit be any easier?

Or maybe a two way angle box?

Put it together piece by piece as opposed to trying to pull the cable through the system once it is complete. Conduit boxes are a better option but bends may work just try and see if the cable passes through one.

 

[Pete999]

Surface conduit on external brick wall isn't it? Can't see him chasing it in!

Yep I realised that just as I hit the post key Dooh

 

[DPG]

Yep I realised that just as I hit the post key Dooh

To be fair it hasn't been the easiest thread to follow.

 

[RDB85]

Better Odd than a badly installed cable. prone to heat damage due to the badly designed install method tight bends and tight enclosures are not a good idea,
Question, is there actually a need for conduit in this situation, many people just bury the cable as is as long asit's protected by a RCD.

Buried or surface?

It’s surface. It can’t be buried as there is no cavity.

 

[DPG]

It’s surface. It can’t be buried as there is no cavity.

You don't want to be putting wires in the cavity wall anyway. Not good practice.

 

[westward10]

I would have a terminal box where it exits the wall and then get your other bends/elbows and see if the cable threads through them. If so you can then piece it together and as you progress you will have less and less cable to contend with.

 

[DPG]

And make sure the cable stays straight. No twists.

 

[Pete999]

It’s surface. It can’t be buried as there is no cavity.

It’s surface. It can’t be buried as there is no cavity.

Nt even on the inside wall? if not best option I can see is take tube route then to an end box , back entry to where you want to go.

 

[RDB85]

Nt even on the inside wall? if not best option I can see is take tube route then to an end box , back entry to where you want to go.

If I use an End Box which is Tower 1-Way Terminal Box 25mm White Pack of 1 - https://www.NoLinkingToThis/p/tower-1-way-terminal-box-25mm-white-pack-of-1/64537

Would you then drill a 25mm hole using a step cone and then just straight with the conduit?

 

[westward10]

Probably won't need a 25mm hole but yes. The box will have two fixing points you often have to drill out to fix it.

 

[RDB85]

Probably won't need a 25mm hole but yes. The box will have two fixing points you often have to drill out to fix it.

Could I use something like a Female Adapter for the end box, so that it will hold the conduit in place, so it can then go across to the garage?

 

[westward10]

The conduit will just slide in no adaptor required.

 

[davesparks]

[/QUOTE]

Could I use something like a Female Adapter for the end box, so that it will hold the conduit in place, so it can then go across to the garage?

You should do some research into how a PVC conduit system is put together, and if and when you are able to actually look at some installations as you come across them.

 

[RDB85]

You should do some research into how a PVC conduit system is put together, and if and when you are able to actually look at some installations as you come across them.
[/QUOTE]

I’ve some idea of how they are put together. But as I said we don’t use conduit in work and I’ve only used it on my 2365 L2 practical. As I work as a Fire and Security Apprentice. The only thing I was unsure of was the bends etc and how to go about doing a straight run across the gate. But some have offered some suggestions which I am going to try. As 10mm T&E is not the easiest to work with. I’ve got to make the best of the cable that has been installed.

 

[Pete999]

If I use an End Box which is Tower 1-Way Terminal Box 25mm White Pack of 1 - https://www.NoLinkingToThis/p/tower-1-way-terminal-box-25mm-white-pack-of-1/64537

Would you then drill a 25mm hole using a step cone and then just straight with the conduit?
[/QUOTE

you will be trying to bend the 10mm2 cable through the back of the box, the larger the box the more room you will havem an end box is ideal with a hole in the back, or a wiska box e\would do, x\cable down the tube, fix conduit to wall, fit whatever box you opt for end or wiska ,cable through the hole you would have drilled with your hole cutter. into where ever you want it to go

You should do some research into how a PVC conduit system is put together, and if and when you are able to actually look at some installations as you come across them.

I’ve some idea of how they are put together. But as I said we don’t use conduit in work and I’ve only used it on my 2365 L2 practical. As I work as a Fire and Security Apprentice. The only thing I was unsure of was the bends etc and how to go about doing a straight run across the gate. But some have offered some suggestions which I am going to try. As 10mm T&E is not the easiest to work with. I’ve got to make the best of the cable that has been installed.
[/QUOTE]
I have sent you a PM

 

[telectrix]

20mm conduit is too small for 10mm T/E.

 

[westward10]

20mm conduit is too small for 10mm T/E.

He's moving up to 25mm.

 

[Pete999]

20mm conduit is too small for 10mm T/E.

He has bought some 25mm now Tel

 

[Zerax]

20mm conduit is too small for 10mm T/E.

I think he's using 25mm now Tel...

 

[westward10]

Coming across the gate is tricky but not impossible you may be able to fit some girder clips.

19-24mm Cable Run Clip Large

Or some half saddles screwed between the two metal flats.

25mm Galvanised Half Saddle

25m Galvanised Half Saddle Saddles suitable for use with 25mm Conduit

www.ccmsupplies.co.uk

[automerge]1587630846[/automerge]
Not sure the girder clips will work looking at the gate again the tube will fail on the upright rods. Half saddles may work but could be tricky to secure.

 

[Mike Johnson]

IMO it is going to be extremely inconvenient having a conduit run across the top of a gate, carrying anything through the gate of any height is going to cause you problems, i.e. carrying a ladder through to clean the windows of clean out the gutters, bite the bullet now and cut chase and bury the conduit in the path.

 

[telectrix]

He has bought some 25mm now Tel

think i missed a page.

 

[davesparks]

IMO it is going to be extremely inconvenient having a conduit run across the top of a gate, carrying anything through the gate of any height is going to cause you problems, i.e. carrying a ladder through to clean the windows of clean out the gutters, bite the bullet now and cut chase and bury the conduit in the path.

It's already got that metal arch thing over the top of the gate to get in the way when carrying things through it, attaching a conduit to it won't make it any worse than it already is from that respect.

 

[ipf]

It's already got that metal arch thing over the top of the gate to get in the way when carrying things through it, attaching a conduit to it won't make it any worse than it already is from that respect.

Just noticed the size of this thread about running a bit of pvc conduit.
Is there any chance that metal arch thing was designed by Isambard Kingdom Brunel?

 

[RDB85]

Just noticed the size of this thread about running a bit of pvc conduit.
Is there any chance that metal arch thing was designed by Isambard Kingdom Brunel?

I know a lot of people with arch over a gate. It came with the gate. The old SWA was cable tied to the top of the gate and bottom of the arch.

 

[Mike Johnson]

It's already got that metal arch thing over the top of the gate to get in the way when carrying things through it, attaching a conduit to it won't make it any worse than it already is from that respect.

I should have look closer , but I would still bury it.

 

[RDB85]

I should have look closer , but I would still bury it.

I’m not a flagger, so no chance of me lifting some flags up. It would look rather odd coming out of a wall down the brick, under the paving slabs and then up the garage wall.

 

[davesparks]

I should have look closer , but I would still bury it.

I would never bury T&E, that's just plain wrong in my opinion.

 

[RDB85]

Thanks for the help everyone. Just picked up my bits.

 

[Pete999]

Back entry terminal box, manufactured bends look terrible.

Not all the time they don't

 

[drzsta]

Just a word of warning to anybody while we are on the subject of PVC conduit. Do not buy from the sheds like screwfix -Try putting a spring anywhere near their "Heavy Duty" PVC Conduit and it just crinkles.

 

[BrianSydSparky]

Okay that’s what I’ve got. 20mm fixings, inspection bends and elbows. Looks like I will need some adhesive.

Make sure you put it together first, then loosen the conduits and glue back again

 

[Mike Johnson]

Be careful with the PVC Solvent it's highly inflammable.

 

[Julie.]

Be careful with the PVC Solvent it's highly inflammable.

Says the voice of experience?

Go on, what's the story?

 

[Mike Johnson]

No story, just look at the COSHH sheets.

 

[Midwest]

Be careful with the PVC Solvent it's highly inflammable.

Yeah, but it has a really groovy smell man.

 

[Pete999]

Yeah, but it has a really groovy smell man.

Don't it just Man? Oh and don't light up a ciggy when using it, makes it better (worse) sorry bout that typo, just remembering happier times. Roof spaces were the best area to use it, just remember to walk on the rafters, not the plasterboard

 

[telectrix]

few sniffs of that glue, you coulkd walk on water, never mind rafters.

 

[freddo]

Don't spill it on the carpet either!

 

[Pete999]

Don't spill it on the carpet either!

What the glue or the drippings from yer nose?

 

[Mike Johnson]

And don't spill it on the plastic around the front of the washing machine or tumble dryer, yes there is a story to that.

 

[davesparks]

And if you get it on your hands don't wipe it off on your trousers, it attacks certain man made fabrics

 

[Simon47]

Getting back to being a little more serious ...
Glue one end, both ends ?
ISTM that unless the fittings are free to move, then gluing the joints will prevent movement due to thermal expansion.
And on a vertical (outdoor) section, glue the bottom fitting (to seal against water ingress) but leave the top joint free.
(Grabs flack jacket and dives for cover) ... Discuss

 

[Mike Johnson]

IMO glue both ends, but ensure the fixing brackets allow movement, plan your layout so there isn't any right angle bends close together.

 

[davesparks]

Glue all joints and use expansion couplers as required

 

[Mike Johnson]

Expansion Couplers For Round PVC Conduit - Discount Electrical - http://www.discount-electrical.co.uk/section.php/107164/1/expansion-couplers-for-round-pvc-conduit bit of a faff using those, yet another product to carry around, I suppose you could use Vaseline, but it would melt in any kind of heat, just talked myself out of that, high melting point grease on the bottom joint and solvent weld the top joint, but only in the vertical, can't see them being waterproof horizontally, but do we need them waterproof or just water tight, the migration of water into a junction box is possibly the concern.

 

[sinewove]

I know it should do this doesn’t it’s the same diameter. So it doesn’t push inside. Not sure if it’s the conduit or the fixings I’ve bought. The fixing are a brand make and the conduit was given to me.

I will get a photo to show you what I mean. I assumed that the fixings should fit inside, so I was a bit confused when they didn’t and thought do I need 25mm tubing.

Sounds like you v been given plumbers waste pipe!? S

 

[Pete999]

Not all the time they don't

Agree, , ,