Quick tricks for calculating your power
No two people are the same, just as no two homes are the same. As such, the power you need really depends on numerous factors. Many more than we can explain here. But there are a number of shortcuts that you can use to work out if you have too much or too little power.
These three tricks can be used separately or all at the same time. These are basic ideas that may (or may not) help to guide you:
1. Trial and error: Turn on all of the household appliances in your house one by one. At some point, the Power Control Switch (PCS) could trip (“tripped fuse”) and you could be left without electricity. If this never happens—not even with all your appliances switched on—it means you have more power than you need. If this only happens in circumstances that are very unlikely to occur in real life (for example with the washing machine, oven, dishwasher and air conditioning all running at once), your contracted power could be sufficient. If this happens in everyday situations, for example if you can't cook and wash clothes at the same time, you haven't got enough power.
2. How cool or hot do you need it to be: In general, heating and cooling systems are the things that use the most power. Intensive use of air conditioning or electric heating can cause your power needs to increase dramatically. Washing clothes on cold uses up to 10 times less power than washing them with very hot water. Only you know how you live and use your appliances.
3. Easy maths: Make a note of the power that your main appliances use. This information is always in the instruction booklet and can also often be found on the sticker attached to the appliance somewhere (sometimes on the base or on the side). When you have the total number, divide it by 3. This will give you an approximate idea of the minimum power you'll need. If you want to know more about this and make a more accurate calculation, we recommend this article on the simultaneity factor and how it affects you.