New electric cooker causing power to trip at fuse. The fuse is reluctant to flick back on after.

[Stephen]

Can you please tell us what the cookers wattage rating is and what the MCB rating is?

5.9 kw max wattage. All other figures will be at the back.

 

[littlespark]

Earth fault. The 80A rccb is slightly more sensitive than the 63 in the CU even tho both are 30mA

An electrician will have test equipment to test the units, and the cooker.
Ex shelf display models can be a little glitchy just with sitting in a shop. Dust, damp etc.

 

[Stephen]

RCD roulette. 30mA up front alongside a 30mA in the CU.

Fault on the oven/wiring to the oven.

Could it be a damp element again?

You could be onto something here pal. Cooker was taken from a display kitchen 2 years ago. Been stored under the stairs since then. And was installed 1 month ago.

Understairs cupboard isn't exactly damp.... but it was there a while.

 

[Stephen]

Do you know if there’s anything else on the kitchen spur circuit or is it exclusive to the cooker?

Yes... hob is on it too

 

[123]

Is it just me or is the edge of that double socket sitting on top of the 45A DP Switch?

 

['mr2'gd4u]

I would say poorly installed the most likely culprit but without actually being there. .

Is it just me or is the edge of that double socket sitting on top of the 45A DP Switch?

Nope it's not just you..

 

[GBDamo]

To clarify, that Crabtree RCD may no longer be required, only a site visit will say for sure. It may be possible to remove or change to a 100mA, again a site visit will be required.

The RCD on the cooker side of your consumer unit should be tripping first but as the two are of the same sensitivity it's a guessing game as to which will trip.

This does not resolve the fault but will stop the whole house going down when a fault occurs.

The fault is likely to be with the oven, and more prcicely an element within it. These elements will absorb moisture if left used in damp conditions. This can be tested to prove and can be resolved by drying out through use..

Unfortunately until it dries out it will continue to trip your hole house to to the upfront RCD.

 

[SJD]

The two switches are probably a bit wider than a standard accessory plate, and the back box is a twin-1-gang, rather than two separate 1-gangs spaced apart. Hence something has to sit on top of something else!

 

[Deleted member 9648]

You need to have ALL circuits IR tested by an electrician, the cooker may be a red herring as if there is a N-E fault anywhere on your installation this can cause tripping only when a heavy load (such as your cooker) is on, misleading the uninitiated to assume the cooker is at fault. Of course it could be the cooker, but I recently attended a tripping fault where a perfectly good shower had been replaced because it only tripped when the shower was on.....and continued to trip when the new shower was used. Fault was on an outside light.

 

[Stephen]

Is it just me or is the edge of that double socket sitting on top of the 45A DP Switch?

It isn't you. Design flaw to be rectified by tiler in coming days.... knew it wasn't ideal... but is it a big risk.... apologies for my naivety