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?

 

[telectrix]

Yes overflow pipe, but if you must use it, asa it is thick walled I have successfully turned it down at the end by putting a mandrel inside and turning it on an electric drill with some sandpaper or file, gets you out of a problem if needs be.

easier to get the right conduit. and why white? bloody eyrsore. black is more appropriate.

 

[RDB85]

easier to get the right conduit. and why white? bloody eyrsore. black is more appropriate.

Because I have white pvc windows and doors and a white iron gate. So black would stick out.

 

[Simon47]

Every brand of conduit I've used has had the make and size printed along it - typically about once a meter. I try and put the printing at the back where it's not visible when I fit it.
As to fitting vs forming ... Well that's a tricky one. I agree that well formed bends and sets look waaaay tidier than a load of bends and short bits of pipe. But on the other hand, making well formed bends and sets is an art form in itself and I would imagine a novice would need "a few attempts and some spare pipe" during the learning process (especially doing it free-form with a spring). I don't consider myself very good at it
As mentioned, give the pipe a good rub (to warm it) before bending, and bend it well past where you want it to stay as it will spring back considerably.

 

[Mike Johnson]

As much as the hate a plumber on here extends, they have their own problems in that each manufacturer of plumbing fittings make then all a slightly different size so not that easy to co-ordinate fittings to fit together, and then we have tried to fit plumbing pipe into conduit fittings, will this madness ever end. LOL

 

[davesparks]

Because I have white pvc windows and doors and a white iron gate. So black would stick out.

If it is being used externally it should be black.
[automerge]1586987575[/automerge]

Yes overflow pipe, but if you must use it, asa it is thick walled I have successfully turned it down at the end by putting a mandrel inside and turning it on an electric drill with some sandpaper or file, gets you out of a problem if needs be.

That won't make it compliant as an electrical conduit though, it is manufactured to a different BS and made from a different material.

 

[littlespark]

I did use plumbers pipe once myself. For running CCTV along the front of my own house. I’ve got a bay window, and the plumbers pipe come with 45’ bends.

 

[Zerax]

I did use plumbers pipe once myself. For running CCTV along the front of my own house. I’ve got a bay window, and the plumbers pipe come with 45’ bends.

Please please please can we see a pic of that...

 

[andyb]

Manufactured inspection elbows look terrible and amateur/DIY. Get a bending spring and make required bends. It's also cheaper in the long run.

And short runs

 

[freddo]

Overflow elbow used on white and black conduit...

the other end went to:

 

[Pete999]

Overflow elbow used on white and black conduit...
View attachment 57478
the other end went to:
View attachment 57477

Somewhat inventive to say the least, DIY job was it?

 

[Mike Johnson]

No he was a professional plumber.

 

[Pete999]

No he was a professional plumber.

That figures, doesn't it?

 

[freddo]

Somewhat inventive to say the least, DIY job was it?

I'm not sure, but all the wiring on the, rather large, site was installed to a similar standard. Thank goodness the place is now permanently closed and I believe the buyer of the site intends to knock most of the buildings down.

 

[littlespark]

Please please please can we see a pic of that...

If you must......

Yes, I just left the ends open. Bad of me.
Built it up with the cable inside already, and it’s glued. The bends have a corner inside them, rather than a sweeping smooth run.
Only for ELV and cctv signal.

 

[Simon47]

Going off at a tangent ...
Interestingly I've noticed that for galv conduit, you can get solid (non-inspection) bends, elbows, and tees. I'm thinking that threading stuff through conduit with non-inspection tees could be "interesting"

 

[westward10]

Solid bends and elbows have always been about a tee seems odd but have just seem them online. How would you wire a tee and guarantee it went the correct way.

 

[Simon47]

I guess you'd need a bit of a set on the end of your tape - and keep the tape the right way round. I'd be more concerned about getting past the inevitable edges to get into the next tube.

 

[ipf]

If you must......
View attachment 57493View attachment 57494View attachment 57495
Yes, I just left the ends open. Bad of me.
Built it up with the cable inside already, and it’s glued. The bends have a corner inside them, rather than a sweeping smooth run.
Only for ELV and cctv signal.

Hope you allowed a degree or two for gravity flow...

 

[telectrix]

Solid bends and elbows have always been about a tee seems odd but have just seem them online. How would you wire a tee and guarantee it went the correct way.

use string and a henry. suck from the place you want it to come out, with any othe outlets plugged or taped over,.

 

[7029 dave]

Never used a bending spring. I will order one and do all my straight cuts and see if I have any scrap left to practice with.

Just a tip , when you get your spring attach a bit of singles looped quite long on the end, so when you have made a set you can pull the spring out.