6 cables in a backbox?

[Deleted member 112675]

Hello Everyone

Will be wanting a grid switch with 4xdp switches to control 4 spurs with a single socket on each. Ring main in and out plus 4 spurs of the switches equals 6 2.5mm cables. I've got a 4 module mk grid backbox - about 45mm depth I think.

Is it possible? I'm thinking the 4 spurs might just enter the bottom of the box and go straight into their respective switches but it might be hard to get all 6 earths terminated?

 

[Andy78]

You're right, that's gonna be a pain for second fixing.

 

[ferg]

As long as the cpc's are connected they dont all have to be in the same hole

 

[SJD]

You could add an extra earth terminal or two in strategic places, e.g.:

M4 Brass Earth Terminal For Metal Conduit Boxes (10 Pack) | METPRO | BES | eBay

Orders received after 1pm Mon - Thurs will be dispatched first thing following morning. This product undergoes rigorous inspection by our supplier in both the country of manufacture and in their UK warehouse.

www.ebay.co.uk

 

[littlespark]

Should be easier than if you used a 35mm box.
Go deeper if you can

 

[Strima]

47mm back box and:

 

[casperLennon]

Easy fit them all in

 

[westward10]

Beginning of the summer tested ten houses for a housing association on a five year old estate. Eight out of the ten had open continuity faults on at least one conductor on the kitchen ring final circuit. Back to do remedials, first house found in 30 odd minutes at the four gang control grid. All bar one of the others at the same point. Half a day I had resolved all eight. Bad design? or the whole MK grid unit totally inadequate for a ring final using 2.5 solid conductors. Admittedly the links could have been stranded 2.5 but nevertheless.

 

[Pete999]

As long as the cpc's are connected they dont all have to be in the same hole

As long as it aint the L or N hole

 

[westward10]

The cpcs are not the problem I did as suggested in #6 by @Strima just chopped the lot and put in a Wago with a link to the grid. The whole lot were so badly connected.