PVC Conduit Question

[RDB85]

I’m looking to buy some PVC Conduit for some security lights rather than clip the cable. We don’t use it in work. But I know I need 20mm conduit but would I be okay using 20mm inspection elbows? I assume they just fit inside?

 

[Pete999]

The T&E is already in, just needs the conduit. So I will order some 25mm conduit and inspection bends. As I am not experienced enough to try a bending spring. It’s going behind a gate anyway so your never going to see it from the front of the house.
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Originally when we moved in was a 32amp MCB feeding some 1.5mm SWA to the garage. At the time it had one double socket and a 8ft florescent tube. The garage is now a room with some led spots gw10 I believe and 4 double sockets currently with a TV, Virgin Media Box and a Electric Heater, and Wine Fridge.

So my uncle deemed the 1.5mm SWA to be no good for what was now in the garage. So as he had some 10mm T&E on his van we fitted that as he said it is more than enough and easier to fit than SWA which would mean making a right mess of the newly decorated utility room.

RDB will probably get away with 25mm conduit, but forget the 25mm inspection bend 10mm2 will never fit, a solid bend maybe, but not an inspection elbow, the cable is just far too big and far too rigid in manufacture.

 

[ferg]

They were yes.
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On a separate note would you use a through box or a Wiska Box to house some flex and choc block. As the two wiska boxes that are currently up, ones black and the other is grey and two different brands.

Would the conduit fit inside the wiska box?

I tend to use a through box with an adaptor and gland.
Assuming it's basically a flex outlet for lights or some such.

If outside don't forget gasket.

 

[Pete999]

Would you recommend a bending spring Pete or another method?
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WHAT SORT OF ANGLE ARE YOU CONTEMPLATING USING?
Remember you are using a fairly hefty cable, so getting it around a bend will be difficult whatever method yo use, could you not run it in the conduit down the wall and take it into whatever without ciconduit, after all 10mm2 has its own mechanical protection.

 

[RDB85]

WHAT SORT OF ANGLE ARE YOU CONTEMPLATING USING?
Remember you are using a fairly hefty cable, so getting it around a bend will be difficult whatever method yo use, could you not run it in the conduit down the wall and take it into whatever without ciconduit, after all 10mm2 has its own mechanical protection.

I understand what your saying. Only other method I was thinking would be Trunking but I would look odd.

 

[westward10]

Davesparks suggestion is best try and build the system around the cable.

 

[RDB85]

Davesparks suggestion is best try and build the system around the cable.

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?

 

[Pete999]

I understand what your saying. Only other method I was thinking would be Trunking but I would look odd.

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.

 

[DPG]

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.

It's coming down the external brick wall Pete.

 

[Pete999]

It's coming down the external brick wall Pete.

Buried or surface?

 

[JohnsonsAces]

I would avoid manufactured bends and elbows they look terrible in any instance. Get a bending spring and use sets wherever possible and use BESA boxes as opposed to the fittings you suggest.

Hey mate,

Quick question, what do you mean by use sets?

 

[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.