struggling to reset Mains after overload

[chrisM]

Greetings all.
I have the lowest cost supply of electricity available here in France. that means that I can only have a few heaters running at the same time as the oven is on or the main rcd supplied by the electricity company trips.
now my problem is trying to turn it back on again. it refuses for ages. i switch off all the individual breakers and the rcds. i try all manner of combinations. eventually I get it back on. sometimes after several hours. I learn nothing because each time I manage to get it on it is after a different combination of changes to switches.

this is what I cant understand.
if my consumer unit is isolated from the incoming by me turning off the mains in the consumer then I should expect that nothing my side of the supply rcd can be affecting things. but I have never managed to get it back on with the Mains turned off. Today I got it back on by having the mains turned on and just one breaker for lights turned on.
any help would be appreciated enormously.
chris

 

[Octopus]

You need a local spark with proper test kit ................

 

[Mike Johnson]

The unit that is tripping out is the responsibility of ENEDIS old EDF only they can replace or open the bottom cover of the unit, as it is this that is difficult to re-set one would suggest a visit by them is required.

Mike

Found this site entertaining and informative : Tout savoir sur le disjoncteur de branchement - - https://www.installation-renovation-electrique.com/le-disjoncteur-de-branchement-edf-tout-savoir/