1,200 Watts to Amps, How Many Amps Is 1,200 Watts?
1,200 Watts equals 10.00 amps at 120V or 5.00 amps at 240V. Common 1200W devices: Standard microwave, window AC, electric skillet.
1,200 Watts Amps at Every Voltage
| Voltage | Single Phase | Three Phase |
|---|---|---|
| 120V | 10.00A | 5.77A |
| 208V | 5.77A | 3.33A |
| 240V | 5.00A | 2.89A |
| 277V | 4.33A | 2.50A |
| 480V | 2.50A | 1.44A |
The Formula
Single Phase: Amps = Watts ÷ Volts. For 1,200 Watts at 120V: 1200 ÷ 120 = 10.00A.
Three Phase: Amps = Watts ÷ (Volts × 1.732). For 1,200 Watts at 240V 3-phase: 1200 ÷ (240 × 1.732) = 2.89A.
With power factor: Amps = Watts ÷ (Volts × PF). A PF of 0.8 increases the current draw by 25%.
Wire and Breaker for 1,200 Watts at 120V
At 120V, 1,200 Watts draws 10.0A. Recommended: 14 AWG copper wire with a 15A breaker per NEC 310.16. For continuous loads (3+ hours), apply 125% rule. Use our Wire Size Calculator for exact sizing.
Common 1200W Devices
Standard microwave, window AC, electric skillet. Always check the device nameplate for exact wattage, rated watts may differ from actual consumption.
Disclaimer: Calculations are for reference. Verify with device nameplate. Consult a licensed electrician for installations.