Cooker switch trips out RCD

[John sankus]

I suggest you get an electrician in ,I am concerned for your safety. You don't seem to know what you are doing.

Thank you for your concern - Not very helpful, but I'll take it under advisement

 

[flameport]

I have to say it did strike me as strange that it requires a supply from both the big cooker socket with a 6mm cable, and the mains ring with a 240 volt plug that feeds the same terminals inside the oven

It doesn't.

What you are doing is wrong and dangerous.

 

[John sankus]

It doesn't.

What you are doing is wrong and dangerous.

What I am doing? All I am doing is connecting the supply to my oven. I haven't added to it, jerry-rigged it, or done anything else to it. The oven has a 6mm cable coming out of it that is wired to a cooker socket, and it has a 4mm flex with a standard 3-pin plug on it. I didn't make it - this is how it came

 

[BlueLoo]

What make of oven is it?

Edit.

You can't get a hob and oven combined together. Not unless its a all in one stand alone.

The oven goes to the big 40a switch on its own and the hob into a separate big switch if its rated higher than 10a.

Perhaps the combined load is too high for the mcb.

 

[bernardgreen]

The oven has a 6mm cable coming out of it that is wired to a cooker socket, and it has a 4mm flex with a standard 3-pin plug on it

That is a very strange way to power an oven. Can you provide the make and mode number of the oven ?

Please take the advice given about employing an electrician to inspect, fault find and correct the way the oven is connected. If as I suspect from your description you are connecting an oven feed circuit ( the 6mm² cable ) and a 13 Amp socket circuit ( the 4mm² cable ) together at the oven terminal block then there is a risk of cables overheating and causing a fire.

Can you provide a photograph of the terminals in the oven where the 6mm² cable and 4mm² cable connect to the oven.

One possibility is that the installer found the oven has a terminal block with 2 terminals for Live and incorrectly assumed the oven required two separate Live feeds

If the installer left the link in place then there is a serious risk of cables being overloaded.

 

[John sankus]

That is a very strange way to power an oven. Can you provide the make and mode number of the oven ?

Please take the advice given about employing an electrician to inspect, fault find and correct the way the oven is connected. If as I suspect from your description you are connecting an oven feed circuit ( the 6mm² cable ) and a 13 Amp socket circuit ( the 4mm² cable ) together at the oven terminal block then there is a risk of cables overheating and causing a fire.

Can you provide a photograph of the terminals in the oven where the 6mm² cable and 4mm² cable connect to the oven.

One possibility is that the installer found the oven has a terminal block with 2 terminals for Live and incorrectly assumed the oven required two separate Live feeds

View attachment 255437

If the installer left the link in place then there is a serious risk of cables being overloaded.

Thank you for that.
I think perhaps previous owners felt it should have the 6mm cable . It is just a single oven - hob is separate. I'll have a look at model number etc then a bit of research and see if it's supposed to be supplied by 13amp plug or large cooker socket, and remove one or the other

 

[John sankus]

That is a very strange way to power an oven. Can you provide the make and mode number of the oven ?

Please take the advice given about employing an electrician to inspect, fault find and correct the way the oven is connected. If as I suspect from your description you are connecting an oven feed circuit ( the 6mm² cable ) and a 13 Amp socket circuit ( the 4mm² cable ) together at the oven terminal block then there is a risk of cables overheating and causing a fire.

Can you provide a photograph of the terminals in the oven where the 6mm² cable and 4mm² cable connect to the oven.

One possibility is that the installer found the oven has a terminal block with 2 terminals for Live and incorrectly assumed the oven required two separate Live feeds

View attachment 255437

If the installer left the link in place then there is a serious risk of cables being overloaded.

Thank you for that Bernard. I did take a few pictures but the nub of the matter is that, from looking at the plate on the side of the oven, it is 2.8 kW 240v, 50Hz - so a standard 3 pin plug. I can only assume that what I surmised before was true - that the previous owners believed that, as an oven, it should have a 6mm cable and be connected to the oven socket - and I confess to not knowing enough about it to muck around with what was already fitted.
With regard to the terminals - there are only 3...
Anyway, the end of the story is that the 6mm cable has been removed, leaving only the induction hob connected to the wall, and the 3 core 13amp flex has been fitted properly and plugged in. Everything is working, nothing is tripping, and I even managed to have a shower without having to run out covered in soap...