[bonzini]

It's 230 V so two of those but not all three indeed.

I don't have an electric hob but electric heater + dishwasher + oven certainly triggers the breaker.

[Gibbon1]

If I'm getting what you're saying you have 15amp service for the house?

My house was built in 1950's. Used to have two 20amp fuses. One for the lights and one for the outlets.

In the US houses typically have 100-200 amp service now.