200 Watts to Amps — How Many Amps Is 200 Watts?
200 Watts equals 1.67 amps at 120V or 0.83 amps at 240V. Common 200W devices: Desktop PC (idle), small pump, LED TV.
200 Watts Amps at Every Voltage
| Voltage | Single Phase | Three Phase |
|---|---|---|
| 120V | 1.67A | 0.96A |
| 208V | 0.96A | 0.56A |
| 240V | 0.83A | 0.48A |
| 277V | 0.72A | 0.42A |
| 480V | 0.42A | 0.24A |
The Formula
Single Phase: Amps = Watts ÷ Volts. For 200 Watts at 120V: 200 ÷ 120 = 1.67A.
Three Phase: Amps = Watts ÷ (Volts × 1.732). For 200 Watts at 240V 3-phase: 200 ÷ (240 × 1.732) = 0.48A.
With power factor: Amps = Watts ÷ (Volts × PF). A PF of 0.8 increases the current draw by 25%.
Wire and Breaker for 200 Watts at 120V
At 120V, 200 Watts draws 1.7A. 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 200W Devices
Desktop PC (idle), small pump, LED TV. 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.