Difficult without being there but I'm thinking in terms of , possibly , a non existing Ze , did you say it was TNS ? Possibly the installation is using the gas pipes as an earth , circuit is from the "wrong" side of a dual RCD board ...thus tripping ?? Just plucking them out of the air . When you touch the plug pin on to the plate you could be earthing the whole installation which.......without the cooker ..is not earthed at all .
Or... There could be a voltage on the ring earth / front plate which is only connected to earth when the cooker is plugged in , and RCD trips .
There may be a dangerous situation there , Mapleleaf , I think it's a priority job TBH .
Could even have a plastic incoming gas main with a fault voltage on the internal pipework .........and ask if anyone else has done any electric work there .
Many houses have faults on the electrics .... we did a board change recently .... ring main problems ...and every replacement metal light fitting was connected between L & E .
Or... There could be a voltage on the ring earth / front plate which is only connected to earth when the cooker is plugged in , and RCD trips .
There may be a dangerous situation there , Mapleleaf , I think it's a priority job TBH .
Could even have a plastic incoming gas main with a fault voltage on the internal pipework .........and ask if anyone else has done any electric work there .
Many houses have faults on the electrics .... we did a board change recently .... ring main problems ...and every replacement metal light fitting was connected between L & E .
