conduit run

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For the sake of neatness, I need to run a length of conduit between one external junction box, and one external switch (to save me running two cables/flexes between them - its a 2-gang switch and requires a neutral too).

What bits do I need to connect them using black 20mm conduit?

Do I just need one of these female adapters on each end of the conduit?

http://www.screwfix.com/p/tower-fem...-2/77225#product_additional_details_container

Are these weatherproof? Should the conduit be glued into place in any way?
 
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You need to use a solvent cement to glue the female adapters to the conduit. Get it right tho first time as you only get one chance!
You also need saddles or spring clips to hold the conduit, usually every 600mm or so. That's about it, are you bending it? You need a bending spring slipped inside to make a bend, or else it will kink. See links below.

http://www.toolstation.com/shop/Ele...acer+Bar+Saddle+20mm+Black/d190/sd2743/p41442

http://www.screwfix.com/p/tower-bending-spring-20mm-black-pack-of-1/70712
 
Nice one. What about flex outlets from conduit? How does that work? I've seen it loads at work, but how do you get a gland secured into the end of a conduit or into a round conduit box? Got a couple of outdoor lights to wire and now I'm using a bit of conduit I might as well go the whole hog. Each light fitting requires a length of flex to connect it.
 
Either screw a gland into a female adaptor if you require flex out of the end of a conduit, or superglue a gland into the opening of a conduit box.

The glands are nylon, not PVC, so solvent cement doesn't work.
 
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If on a BESA box (showing my age now...) then I glue a very short piece of conduit into the box entry, then glue a female adapter onto it. The conduit must be short enough so that when the female adaptor is pushed fully on, it butts up to the box.

Then, simply screw the gland onto it.
 
If on a BESA box (showing my age now...) then I glue a very short piece of conduit into the box entry, then glue a female adapter onto it. The conduit must be short enough so that when the female adaptor is pushed fully on, it butts up to the box.

Then, simply screw the gland onto it.

That's how I do it, only problem is it ends up being quite long (prob near 100mm) by the time the glands in, so if space is critical its not ideal.
 
You can get glands which have a 20mm conduit at the rear rather than an M20 thread, but they are like hens teeth!

Conduit%20glands.jpg
 

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