SOLAR SKOOL · FREE MINI TOOL
Inverter Power Check
How many watts might your appliances use at the same time?
Enter the normal running power (W) for up to three appliances you plan to use together. Leave unused entries at zero.
COMBINED RUNNING POWER2,250 W
That's 2.25 kW while all three are running.
⚠️ Starting power is not includedSome appliances — especially fridges, pumps and motors — need extra power briefly when starting. This basic calculator adds running watts only. The result is not a recommended inverter size. Check the equipment's starting demand and the inverter's surge rating with a qualified professional.
Remember: Watts (W) describe power used at a particular moment. Running several appliances together increases the total load. A 2,250 W total does not automatically mean a 2,250 W inverter is suitable.
Learn more at Solar SKOOL ↗Solar SKOOL is for learning and planning, not electrical installation training. Electrical installations and modifications must be carried out by suitably qualified and authorised professionals. The calculation works offline; opening the Solar SKOOL website requires internet.
LEARN BEFORE YOU BUY. BUY WHAT YOU NEED.