How much does the electric stove and instantaneous water heater consume?

Anna asks:

Hello! I am doing repairs and I have a gas water heater. The ventilation of the old house is bad, it was proposed to switch to electricity completely, turning off the gas. The column heats only water, no heating. Tell me how much electricity the flowing water heater consumes, which one is better to take, the parameters when choosing. And how much more will the electric hob and oven consume?

In general, I'm afraid of electricity bills, but safety comes first. Therefore, I want to understand which electric boiler is better. And how to properly connect the wiring.

Hello! For all of the above questions, the single answer "depends on the specific heater / hob / oven." And also on their mode of operation. To calculate the consumption of an electrical appliance, you need to multiply its power by the number of hours they work without interruption per day / month / year. In this case, the power, for example, of an electric stove, is indicated as total, i.e. how much it consumes if all burners are on at full power.

In this case, for example, the hob will consume depending on the number of burners turned on.

In this case, the power consumption depends on what heating temperature is set on the device, well, the burner you can turn it on "to maximum" or "to minimum", because most modern stoves have a power regulator. On water heaters, the more you turn on the temperature, the more it will consume.

The power of ovens is usually 1-3 kW, hobs on average 3-7 kW. This is common. You can roughly calculate how many minutes and on what "fire" you will cook soup, porridge - you will find out how much it will "eat".

It is not entirely clear whether you want an instantaneous water heater instead of a column or a boiler that heats both heating and water?

Instantaneous water heaters, like gas water heaters, are chosen by the number of water sampling points, or by another - from how many taps do you need to issue hot water at the same time and to what temperature it needs heat…

The power of the electric boiler "from ancient times" is calculated according to the formula: 1 kW per 10 m² of heated area. But it does not take into account anything, not how well the house is insulated, how much heat loss from cracks and windows. Also, if you live in the north and it is very cold in winter, and the frosts are lingering, then you can multiply the resulting value by 1.5-2, and if somewhere in Sochi, then less is possible.

Well, in fact, how many amperes will be allocated to you for input, then you will not be able to connect more of such power.

On the wiring: boiler, electric stove, instantaneous water heater, we connect each to separate machines and to each we lay our cable and connect directly, or we put a 32A power outlet (with single-phase power up to 6-7 kW).