Recent content by waheed159

Your question basically solved the problem so thank you so much. The Black cable is connected to a spare terminal block tucked at the back of the programmer plate, so its not used as a neutral or anything else. This suggests that the earth and neutral from the Boiler live switched can be...

So can you help? Please?

The yellow is the Switched live from the Stat and it is where it should be. The black in question is not from the room stat but the neutral from the boiler switched live. This is the only thing I cannot work out. Thank you for your help.

God man!! whats is with the hostility!! Firstly thank you so much of those trying to help. I am looking to install the Nest Thermostat 3rd Gen and looked at all the posts to work everything out (all the connections). All i could not understand is why that black is in there as everywhere I...

Also unlike most S-Plan Diagrams, the live feed from the 3A Spur goes to my programmer first rather then the wiring center and then a Live feed from the programmer to the wiring center. is this unusual Thanks.

Hi Everyone. I have a quick question about the wiring for my heating system. Please see the picture of my wiring center. I have located most of the cables as to what they do. But there is a Black cable in with the Room Stat Switched which I think should be in Neutral. Its paired from the Boiler...

Wiring