Consumer unit extension wiring

[muso31]

Hi all! I'm not a spark but know enough to be able to install off grid solar etc. I've just purchased a new house and have noticed the consumer unit was extended at some point:

The additional unit is from the kitchen as they had a new kitchen fitted. My concerns are with the quality of the work. No glands are used and all wiring enters the side, the cables also have sheathing cut short so the wires are exposed. I'd have thought some simple chaffing could expose a wire and short the consumer unit:

Due to these concerns I opened up the box to take a look at the method used to extend the wires:

I have a few questions here... why are glands not used? Is it ok not to use a DIN rail and simply extend all circuits with lever terminals? If so, would splice connectors 221-2411 not be more suitable? If the cables aren't long enough to reach a DIN rail, would it be best to use a Wiska Consumer Unit Relocator for any circuits that do have a wire long enough, and then extend the others?

I'm assuming this is legal, but sloppy work.

 

[GBDamo]

It's rough but, provided connectors are able to handle the rated current of each outgoing circuit, there's no real issue on that front.

Cables should indeed be restrained and IP rating of enclosures maintained. The main issue, as you've highlighted, is cable sheaths and exposed insulation entering through a cut metal edge. There are a number of ways this could be resolved and glanding individual cables is one of them. To make the best of what you have, I'd probably replace the 2 gang surface box with a small adaptable box and run a short length of 2x2" PVC trunking between it and the board, which would provide space to place some sort of gromment over that cable entry.

I'd be slightly concerned about what's inside your CU, but it may all be fine.

Rough is being exceedingly generous.

Never ceases to amaze me what people will walk away from.

That could have been so much better with a little forethought, experience and care. Oddly, probably no more cost.

Edi to Add...


Why has the CU been moved 2ft to the right anyway?

It appears to me that they installed a 12way splitty for five circuits.

Probably selling them off at ScrewStation so the fella picked one up, realised it wouldn't fit on the original board and then disappeared down a rabbit hole of poor decisions and workmanship.