A 24 kWh cap per day seems very reasonable. Drawing 8 kW is quite a lot.
My home is in London UK and is relatively small and efficient, but 8kWh may be higher than our peak demand ever over more than 20 years in this house...
UK appliances cap out at 13A, or 3.1kW. Electric cookers may be on higher current wiring, but seem to be rated at 3kW max anyway.
I think the only way most people could get to 8kW continuous without an EV would be to turn on their electric oven, grill, and all spots on their electric hob. And the kettle.
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