sicetaitsimple wrote:Petrus wrote:The three-phase in individuals is in extinction, and it's a good thing. It is a fact of history, and unless there is a specific need, such as the use of a fairly powerful machine tool, it is only found in relatively old installations.
Now, if you want to consume 12kVA on a single phase, on a three-phase installation of a certain age, try. Firefighters are the 18.
I really think the opposite. With the evolution of energies and electrification, three-phase is truly the connection of the future for homes of a certain size. We indeed need more and more power for heat pumps, electric vehicle charging, and obviously all the devices in a house... Balancing is not that difficult, and a load shedding can also help if we have subscribed to a somewhat fair power. You have to balance it with common sense. For example, by telling yourself that the water heater, which will operate during off-peak hours, will not draw power at the same time as the oven or the kitchen appliances, which will operate before meals. We can therefore put the oven and the water heater on the same phase. Large appliances which will operate during off-peak hours can also be distributed over the three phases: on one phase the water heater, on another the electric car socket (if single-phase), on another the washing machine/dishwasher. For the kitchen, we will place the oven in one phase, the worktop sockets in another phase (possibly also distributed over the 3rd phase), so that we can use both at the same time.
At an individual's home, for charging electric vehicles, single-phase limits in practice to 7kW, while in three-phase we can easily go up to 22kW, and with terminals capable of dynamically adapting the charging power to the capacity available on the 'Electrical Installation. So yes 7kW is sufficient, but 22 is better, especially when you have several vehicles per household.
For large consumers such as heat pumps, saunas, certain pumps or garden/agricultural devices, three-phase quickly becomes essential. It is therefore the most versatile choice and it is the best for the electrical network, because we make the effort to balance and therefore limit the voltage drop on each phase.