Electrical Current Benchmark
15 Amps to Watts Calculator
Standard North American NEMA 5-15 wall receptacles, hair dryers, microwave ovens. Learn exact wattage at 12V, 120V, 240V, and 480V with NEC 80% continuous safety rules.
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15 Amps Calculation Setup
Volts
PF
Real Power Output
1800 W
1.8 kW
NEC 80% Safe Continuous Load
1440 W
Min Copper Wire (75°C)
14 AWG
Step-by-Step Derivation:
P = 15 A × 120 V × 1.0 = 1800 Watts
Quick Benchmark Summary for 15 Amps
| At 12V DC: | 180 Watts |
| At 24V DC: | 360 Watts |
| At 120V AC (US Wall Receptacle): | 1800 Watts |
| At 240V AC (Appliance/EV): | 3600 Watts |
| Recommended Breaker Size: | 15A/20A |