You can use these three tips separately or all together. They are basic ideas that may (or may not) help to guide you:
1. Trial and error: switch on your household appliances one by one. At some point the circuit breaker will trip and the power supply will be cut. If this never happens, even with all your appliances running, it means you have more power than you need. If this occurs only in circumstances that are very difficult to reproduce in real life (for example, the washing machine, oven, dishwasher and air conditioning all working at the same time) it means that your current power limit may be adequate. If this happens in everyday situations (for example: you cannot cook and wash clothes at the same time), it means that your limit is too low.
2. How much cold/heat you need: as a general rule, cooling and heating uses the most power. Intensive use of air conditioning or electric heating can significantly push up your power needs. Cold washing machine programmes use up to ten times less power than doing the laundry with very hot water. Only you can know the way you live and use your appliances.
3. Easy maths: note down the power needs of your main appliances. This information is always in the instruction booklet and is also usually found on the sticker attached to the device somewhere (sometimes on the base or on the side). When you have the total sum, divide it by three. This will give you an approximate idea of the minimum power you will need. If you want to know more regarding this matter and make a more accurate calculation, we recommend that you read this content on the simultaneity factor and how it affects you.