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New thermostat wires

Here's what's tripping! Guessing the boiler must be somehow linked to the 1st floor sockets! Also attached a picture of the boiler cabinet and some other wiring that's in there!
 

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Well I think you have drilled thru a cable by the stat.

May as well take the stat backing off the wall and see if you can see anything thru the hole and if that cable moves freely
 
Do yhe first floor sockets work?

Wonder if that cu is mislabelled ! Could test some of the switches on the left to see if they do what they say. By turning them off.

Have you seen the boiler light up since you have been trying?
 
enz said:
Here's what's tripping! Guessing the boiler must be somehow linked to the 1st floor sockets! Also attached a picture of the boiler cabinet and some other wiring that's in there!
Click to expand...
Where does the black cable in the single socket go to?
 
Nope sockets on first floor not working! I did try have a look, but can't tell if I've gone through a wire! I thought I was well awar from the cables, unless they turn in the wall! Boiler not firing up at all, no power to it whatsoever!
 
I've tried that, no luck, the plug in the socket is a shower pump that i had installed last year! For some reason that's the only socket working fine! Socket must be connected straight down to the mains!
 
enz said:
Guessing the boiler must be somehow linked to the 1st floor sockets! Also attached a picture of the boiler cabinet and some other wiring that's in there!
Click to expand...

Obviously, it shouldn't be. Perhaps you've damaged a cable for those sockets, fixing the new stat.
 
enz said:
I've tried that, no luck, the plug in the socket is a shower pump that i had installed last year! For some reason that's the only socket working fine! Socket must be connected straight down to the mains!
Click to expand...

Plug a table light, in the socket, and then you can identify which MCB feeds that socket.
 
you must have drilled though something. or made other changes while you were doing the stat ?

Maybe you have drilled thru the upstairs socket circuit, and the boiler is feed off that circuit too.
Either way, you need to get that stat off the wall and see what has happened.


Also take a close up picture of that wiring jumble at the top. Paying close attention to where the red yellow and blue wires connect. (terminal numbers) and keep it on your phone.
 
Can you trace the wires at the wiring center end and disconnect them, turn the mcb back on and then see if it stays on? If it doesn’t, then perhaps a coincidence and something else is causing the trip. If it does stay on, then it’s likely something on that run.
 
CountryFan said:
Can you trace the wires at the wiring center end and disconnect them, turn the mcb back on and then see if it stays on? If it doesn’t, then perhaps a coincidence and something else is causing the trip. If it does stay on, then it’s likely something on that run.
Click to expand...

It looks as if it could be this one...

1764514166486.png
 
Thanks everyone for their help on this! Had to get someone in in the end! Turns out both the fuse near the boiler and the mcb had blown so had to them replaced on Monday!
 

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