Posted: Fri Jul 6, 2018 12:20pm
Your contracted supply is the first item in the breakdown at the top of your bill, and will appear as either Potencia facturada or Capacity Invoiced. For a house I'd expect 5,75 kW, but if it's just a holiday home then you might be on a lower supply.
If all the circuit breakers and the earth leakage breaker trip, then the house wiring hasn't been done properly. That doesn't surprise me, as I had to do a lot of rewiring to make sure that each circuit was isolated from the others, and that a fault on one circuit wouldn't affect any of the others.
However, if you haven't recently had a smart meter fitted, and things were OK before, then I have to assume that the fault is with the oven - not just an earth leak, which would only trip the earth leakage breaker, but something more drastic involving a short.
As an aside, I'm surprised that you haven't got a smart meter yet, as we live out in the country and had one fitted a while ago. If one's fitted whilst you're not there, you'll know about it when you start getting bills monthly instead of two monthly.