SWA Into Back Of Consumer Unit?

[EViS]

We've got a new build with all the T&E, earths and 25mm SWA coming through one 60mm cutout in a stud wall. What's the neatest way of terminating the SWA?

I'm not convinced that a gland with the earth tag and nut 'floating' loose within the CU, and the 'tails' then running as usual is going to be best practice here? Or is this how you would all do it?

 

[westward10]

I don't believe it does need to be accessible. Providing the point of earthing for the armour is accessible at source you have no real need to access the other end. Best way is to gland it off at the CU first then you aren't restricted by anything. Small adaptable box on the rear of the CU, chuck/recycle the lid and use the threaded holes to fit the board. Nine times out of ten it will be a cack job however you attempt it.

 

[Ian1981]

I don’t think it needs to be accessible (tho could be by removing the DB which is not ideal) as you are earthing the armour at the supply end and not utilising it as the means of the cpc for the circuit so would not require to be inspected to ensure the integrity of the earthing and I don’t see an issue against ensuring strain relief and mechanical protection of the conductors within as long as they are not terminated ‘short’ into the mains switch isolator.
It’s better this than no glanding at all in my opinion.
Using an internal cable clamp like Hager CU’s provide can ensure that there is no strain on the conductors

 

[DPG]

I've only skipped through this briefly, but was someone really considering just leaving the end of an SWA loose in a stud wall???

 

[Dustydazzler]

‘Standard practice’ these days is to simply put the swa gland on the end and just leave it floating ‘pushed back’ in to the hole.
Just bringing the individual cores through with the twin and earths.
I personally don’t really like it this way as the gland isn’t attached to anything but nearly every new build I see does it exactly this way....

 

[littlespark]

I’ve maybe missed something, but I’m assuming the SWA is 3 core and a core is being used as cpc?
If only 2 core, then both ends need glanded, banjoed and installed properly.

 

[davesparks]

Fit the gland into a 90 degree inspection bend, then fit the bend to the back of the CU with a brass bush.
This way you don't have to try and get a sharp 90 degree bend in the cable and it can be done through a relatively small hole in the plasterboard.
You can drill and tap the back of the inspection bend to get an earth flylead onto it if needed.

 

[Midwest]

I prefer the adaptable box idea, with fly lead.