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To be honest I think it's ALL a bit suspect, and I kinda knew that getting the CU replaced would be a thing I'd have to do...

It's a solid single strand.

There are tonnes already :P

Oh there definitely isn't - there appears to be a smaller CU above it with an actual fuse (not MCB) - I don't think it's been touched since the 50s!

Combi, but it'll be a pain to get a hot water pipe to the shower :D

There is no earth to the brass faceplate, just to the back box (the cable is there, but it's not attached and clearly never has been. Which yes, is bad, but the first question was how to fix the shower cutting out, and it sounds like the consensus is 'get it rewired, get a new consumer unit'?

Well worryingly when I took off the switch to inspect the cable it came out the back - I've re-screwed it in now...

No, it's not: https://i.imgur.com/LZF6Kph.jpg

Sure: https://imgur.com/a/cyvE2

Yes, thank you, and that's why I *think* it's 10mm, because the bundle of live strands together appears to measure just under 5mm - but does anyone else think they could confirm or deny my guesses?

Well the pictures in the first post were there as more of a question to the experts here really - that's all I have to go on?

But based on the cables and the 9.5kW shower should I just get a larger MCB? Obviously I don't want the cables to melt and to start a house fire, but they seem huuge!

Now I've posted that I can clearly see it says 30A on the front - d'oh! Okay, so that's good - 30A - and the wires are 10mm? So why would it cut out?

There are no details on the front I'm afraid: https://imgur.com/a/yo6O3

Of the MCB, sure - https://imgur.com/a/hfXGv

Hello all, I appreciate that this has been asked and covered a few times, and I think I've worked out an answer but I'd appreciate some additional feedback First issue was that the shower cuts out after about ten minutes of running. Curious. The MCB in the consumer unit was warm, but I wasn't...