Rcd tripping out after new DIY circuit

[Ceeds]

Hello.

I'm new to this forum and I've recently been doing a bit of work on holiday home in Ireland and have converted an attic space. The problem is I have installed a ring circuit back to existing DB which had a spare way and 30A mcb but when I juice up the new circuit and plug anything in the new sockets it trips the rcd. I have checked all connections within socket outlets and at the board but everything seems fine.
Any suggestions what this might be?

 

[flameport]

It's tripping because it's wired incorrectly.
The installation of new circuits in Ireland must be carried out by a REC. DIY is not an option.
https://safeelectric.ie/help-advice/controlled-restricted-electrical-works/

 

[Ceeds]

That's helpful.

 

[jj4091]

Note how the lives & netrals are connected to different busbars

 

[winston1]

It's tripping because it's wired incorrectly.
The installation of new circuits in Ireland must be carried out by a REC. DIY is not an option.
https://safeelectric.ie/help-advice/controlled-restricted-electrical-works/

The penalties are harsh and include prison.

 

[sxturbo]

Note how the lives & netrals are connected to different busbars

Wow what a tidy install, never seen one like that before, whoever done it clearly cares about their work

 

[Ceeds]

I have never been on a more useless forum in my life.