Watt til ampereomregner

Sådan bruges denne lommeregner

1. Indtast Watts (W)
2. Indtast Voltage (V)
3. Klik på knappen Beregn
4. Læs resultatet vist under lommeregneren

Watts to Amps Formula

The relationship between power (W), voltage (V), and current (A) is: A = W ÷ V. This comes from Ohm's Law: P = V × I.

Common examples at 120 V (US):

• 60 W bulb = 0.5 A
• 1000 W microwave = 8.33 A
• 1500 W hair dryer = 12.5 A
• 2400 W oven = 20 A

US vs European Voltage

The US/Canada uses 120 V (60 Hz); Europe, Australia, and most of the world use 230 V (50 Hz). The same 1000 W appliance draws 8.33 A at 120 V but only 4.35 A at 230 V. Always specify voltage when calculating amps.

Circuit Breaker Sizing

To avoid tripping a circuit breaker, keep total load below 80% of rated capacity. A 15 A breaker (120 V) can safely handle 1440 W continuous. A 20 A breaker handles 1920 W. For 240 V circuits, a 20 A breaker handles up to 3840 W.