SWA to CU

[Myles]

Festive greetings everyone,

I have a 25mm SWA sub main coming into a house, and need to terminate into the CU. The problem being is that in order to get the cables(once exposed from armour into the CU they either need to go behind a wall and down from ceiling (less than 50mm from surface so not valid) or they need to run along a surface, but would not be double insulated.

Does anyone know a 100a junction box into which I can terminate 25mm swa and then run meter tails from in order to satisfy regs and the NICEIC bloke who will be along in Jan ?

 

[monkeyelectric]

Festive greetings everyone,

I have a 25mm SWA sub main coming into a house, and need to terminate into the CU. The problem being is that in order to get the cables(once exposed from armour into the CU they either need to go behind a wall and down from ceiling (less than 50mm from surface so not valid) or they need to run along a surface, but would not be double insulated.

Does anyone know a 100a junction box into which I can terminate 25mm swa and then run meter tails from in order to satisfy regs and the NICEIC bloke who will be along in Jan ?

Can they go in trunking? or run the swa right upto the cu and terminate into an adaptable box, other than that henley blocks are 100A rated

 

[Deleted member 9648]

Terminate in a 100a isolator and tails from that.

 

[Myles]

Cheers lads, Can you point me in the direction of one which will accept a 25mm swa cable?? The only boxes I can see which will take a 25swa are fused 100a switches, due to the size of the cable.

 

[Eggster71]

When I've done it I've installed a 4x4x2" galv adaptable box. The SWA can be glanded into the top of it and the cores run staight through to
a] phase&neutral an inverted henley block witht the tails coming out one of the sides.
b] earth crimp lug bolted to the side of the box with your main earth the other side running off tothe CU with the tails. Make sure you use grommet strip etc, I also make sure I put a "safety earth" warning label where required. Had no grief of my NICEIC man so far!

The other option would be to terminate direct into a metal CCU.

Or use a small garage type board, your 100A main switch takes 25mm conductors!