outdoor trunking

[bobbyr]

Hello All

Is there any type of square trunking that can be used outdoor for domestic purposes. The customer doesn't want to paint over cable or galvanised trunking and I need to run a 10mm supply to an outer building. Any suggestions? cant go In the ground either as he has blocks on top of concrete.

thanks

 

[Silly Sausage]

20mm Black Enamel Conduit Boxes Stop End Terminal Through Tee 4 way 4way Angle U Y Boxes

 

[Engineer54]

If you're thinking of using white PVC trunking forget it. As far as i know it doesn't come in a weatherproof form and is not UV resistant. So if your customer wants a supply out to this outbuilding he is going to have to compromise somewhere along the line, such as using black UV resistant conduit and fittings etc with rubber box lid seals, or SWA cable etc.... Or he can't have a correctly installed supply to the outbuilding!! .....Simples!! lol!!

 

[Octopus]

Use SWA.

and why exactly does he need 10mm?

Job done

 

[Pete999]

Got some knocking about in his shed I expect

 

[shanky887614]

Hello All

Is there any type of square trunking that can be used outdoor for domestic purposes. The customer doesn't want to paint over cable or galvanised trunking and I need to run a 10mm supply to an outer building. Any suggestions? cant go In the ground either as he has blocks on top of concrete.

thanks

if he doesnt want to paint it, suggest stainless or better yet powder coated lol.

catenary wire?

 

[Baker1988]

Why does it need to be waterproof? The twin and earth that will be going in the trunking will be waterproof and I pretty sure hardly any water would get in pvc trunking

 

[Richo77]

Don't think plastic trunking will last long outside with all the elements. It will fall to pieces in a couple of years at the most. Do it properly, SWA or conduit.

 

[Baker1988]

Don't think plastic trunking will last long outside with all the elements. It will fall to pieces in a couple of years at the most. Do it properly, SWA or conduit.

Yeah i do agree with ya swa or conduit is the way to go but i was just saying

 

[DPG]

Don't think plastic trunking will last long outside with all the elements. It will fall to pieces in a couple of years at the most. Do it properly, SWA or conduit.

Plastic tubing lasts for years outside. Daz

 

[Adam W]

The customer seems to have pulled a lot of criteria out from somewhere.
I suggest running the cable in SWA as you would normally, then the customer is free to get a chippy, or even a bricky, to carefully box around it.

 

[DPG]

I'd have thought an swa run would like better than plastic trunking anyway on an outside wall. Daz

 

[7029 dave]

SWA for me,don't let him bully you, or say bye,!!

 

[Engineer54]

Plastic tubing lasts for years outside. Daz

The white stuff won't last very long, it has no UV protection whatsoever and will become brittle within a couple of years or so!! Black conduit on the other hand is generally UV proof....
Whatever conduit is used, it will need rubber gaskets beneath any conduit box fitting lids....

 

[Richard Burns]

This run of white conduit did not last all that long.
Falling apart as you touch it.
Even though it was painted!

 

[Pete999]

This run of white conduit did not last all that long.
Falling apart as you touch it.
Even though it was painted!
View attachment 26418

Only 2 saddles tut tut

 

[old_sparky_RE]

I've had 2000m of white high UV resistant 20mm electrical conduit shipped into Afghanistan. All accredited (CE and UL) as fit-for-purpose for this harsh environment ! -20 to +60, Uv rated to Level 10 .... but it is more expensive than standard conduit, but it is out there to buy.

Example from Google:
Outdoor Electrical Uv Resistant Pvc Conduit - Buy Uv Resistant Pvc Conduit,Ourdoor Pvc Conduit,Electrical Pvc Conduit Product on Alibaba.com

 

[Engineer54]

I've had 2000m of white high UV resistant 20mm electrical conduit shipped into Afghanistan. All accredited (CE and UL) as fit-for-purpose for this harsh environment ! -20 to +60, Uv rated to Level 10 .... but it is more expensive than standard conduit, but it is out there to buy.

Example from Google:
Outdoor Electrical Uv Resistant Pvc Conduit - Buy Uv Resistant Pvc Conduit,Ourdoor Pvc Conduit,Electrical Pvc Conduit Product on Alibaba.com

We live and learn... lol!!

 

[Fox]

A nice bit of neat SWA work should be pleasing to to look at and needn't spoil the aesthetic nature of a house...but each to their own I guess!

 

[DPG]

This run of white conduit did not last all that long.
Falling apart as you touch it.
Even though it was painted!
View attachment 26418

That's been bashed. More saddles may have helped. Black tubing lasts for years. Daz

 

[bobbyr]

Use SWA.

and why exactly does he need 10mm?

Job done

He's a mechanic and wants to add other things onto the unit (compressors etc) hence why suggested 10mm

 

[bobbyr]

Thanks for everyone's help. I managed to convince him with white round counduit

 

[Pete999]

Eyesight failing mate I didn't notice until after I had posted

 

[telectrix]

Thanks for everyone's help. I managed to convince him with white round counduit

you don't want to be using white pvc. why not run it in pyro?

 

[Badged01]

Its always interesting this UV stuff and the effect it has. We all know best practise etc .. dictates that outside we should be using UV tolerant but how many times have you seen grey T&E, white multicore or white trunking/conduit that's been outside for donkeys. Maybe a bit of weathering on it but other than that functioning well!!

Maybe more of an issue in sunnier climes with an aggressive sun (plus more of it) than the UK, plus clearly dependent on how well its hid from the sun. I know my mothers house had all the external lights run in a white multicore, clipped to the brickwork some 30yrs ago by my Dad and they're still going to this day ......

 

[Andy78]

Its always interesting this UV stuff and the effect it has. We all know best practise etc .. dictates that outside we should be using UV tolerant but how many times have you seen grey T&E, white multicore or white trunking/conduit that's been outside for donkeys. Maybe a bit of weathering on it but other than that functioning well!!

Maybe more of an issue in sunnier climes with an aggressive sun (plus more of it) than the UK, plus clearly dependent on how well its hid from the sun. I know my mothers house had all the external lights run in a white multicore, clipped to the brickwork some 30yrs ago by my Dad and they're still going to this day ......

I have seen plenty of T+E and white conduit that has been outside for decades and still functioning fine. I have also seen my fair share of brittle, cracked, examples of both from the effects of UV and weathering that is nowhere near suitable for continued use.
Depends which way the wind is blowing I suppose....

 

[Engineer54]

If the OP was talking about using mini trunking, can you imagine what it would look like even when new for gods sake!! lol!!

The general type of plastic used for white conduit etc, will become brittle in the presence of UV. Conduit that has been in place a number of years, will if tapped or inadvertently hit, break up into little bits around the area it struck. From then on, it's a steep downward trend of decay to a point where just touching it will cause it to disintegrate further ... lol!!