UK Connecting Dual RCD board.

[NickT75]

I have a 17 way BG consumer unit I have set up with dual RCD. I got the 25mm tail kit, but can work out how to get 2 live tails into the bottom of the main switch to connect to the RCDs. Any ideas please?

 

[Markyd]

To the OP...get someone in who knows what they are doing....This is a CU your messing around with not a 2 gang switch

 

[EddieB]

As luck would have it, I just fitted a BG board that the customer had supplied.

Populated split RCD board, 10 way (5+5)
You can just about see how the internal connections are made.

View attachment 90346
Note the ferrules crimped onto the ends of the internal links.

A couple of issues. The busbar needs cut. Comes as a 15 way and needs to be 2x 6… but as you can see here, the RCDs are physically deeper than the MCBs, so the bus at sits at a slight downhill slant.
This in turn gives all the breakers a slant and it’s near impossible to get the cover back on.
Secondly, one of the 16A MCBs is faulty, doesn’t click on.
Third. The 35mm knockout for a tails gland is below the RCD. Would have made sense to put it on the right where there’s plenty space.

I was moaning about this very morning regarding the location of the 30mm knockout, you have to assume that it’s not designed by sparks ?

 

[Deleted account]

To the OP...get someone in who knows what they are doing....This is a CU your messing around with not a 2 gang switch

I’d normally agree with you, but he is gaining experience by doing this in his own home.
good luck to him.