Recessed Patio Lights

[Bellendian]

Hi, got a job coming up that will involve installing recessed lights into the patio. I'm trying to figure out the neatest and also compliant way of wiring these up.
Generally I wouldn't bury any cable other than SWA, but I can't imagine these walk over lights are going to have provision for glanding off 2 swa cables.
Have seen these at local shop and installers have put a wiska box on building wall inline with light, run swa loop through this and then what looks like a hituf link direct to light fitting.
Unfortunately in this case I won't have a wall to mount anything onto...
Was considering using a resin y joint buried adjacent to fittings and then running hituf or rubber flex out of the y ready to connect into each light, but seems expensive!
Thanks for any ideas

 

[1Justin]

@wirepuller. Nice idea. - It relies on sleeves being pretty long doesn't it, especially if a longish run and aiming to get some fall on the 100mm. And also a sleeves a close close fit to the pipe hole. - Checking sleeves just now, I noticed some from "Enlite" which are deeply ribbed, which would give soil, worms and creepies etc all a very easy entry.
I'll look seriously at the idea though if I get asked to do one. Ta.

 

[Bellendian]

Hi, thanks for the replies, looks like I'm not alone here with this conundrum...

Wirepuller - I like the sound of your plan, I have the luxury of supervising the groundworks on this job so I can get things done how I need them. Do you have any particular brand of fittings that you recommend for this? I have plenty of 100mm twinwall ducting left over from another job, and reckon this may make a good substitute for the soil pipe.

My biggest concern is this: I wouldn't normally bury any cable other than SWA. Are we saying that if the cables are laid in ducting, and protected by the paving, that this rule can be relaxed somewhat, and the use of a suitable (Ho7?) type flex would be deemed acceptable?
The use of flex greatly reduces the potential problems with terminating the cables into the fittings.

There is a nearby garage, into which the ducting could be routed, and all the flexes marshalled in and terminated.

If there is a consensus that it's ok to run flex in ducting to these things then I'd be pretty happy with this as a solution!

 

[Deleted member 9648]

The last one I did all the lights were connected to drivers in a WP box above ground level so all the below ground wiring was in flex and extra low voltage. I have also done mains fittings using TRS flex, RCD protected. No issues with that at all in such a large duct, under a patio where disturbance is not going to be a concern. Joints using pond type plug/socket connectors.
The main area to take care is sufficient fall for drainage, and you should take precautions to prevent rodent ingress to the duct.