2,500 Watts to Amps — How Many Amps Is 2,500 Watts?
2,500 Watts equals 20.83 amps at 120V or 10.42 amps at 240V. Common 2500W devices: Electric oven element, table saw.
2,500 Watts Amps at Every Voltage
| Voltage | Single Phase | Three Phase |
|---|---|---|
| 120V | 20.83A | 12.03A |
| 208V | 12.02A | 6.94A |
| 240V | 10.42A | 6.01A |
| 277V | 9.03A | 5.21A |
| 480V | 5.21A | 3.01A |
The Formula
Single Phase: Amps = Watts ÷ Volts. For 2,500 Watts at 120V: 2500 ÷ 120 = 20.83A.
Three Phase: Amps = Watts ÷ (Volts × 1.732). For 2,500 Watts at 240V 3-phase: 2500 ÷ (240 × 1.732) = 6.01A.
With power factor: Amps = Watts ÷ (Volts × PF). A PF of 0.8 increases the current draw by 25%.
Wire and Breaker for 2,500 Watts at 120V
At 120V, 2,500 Watts draws 20.8A. Recommended: 10 AWG copper wire with a 30A breaker per NEC 310.16. For continuous loads (3+ hours), apply 125% rule. Use our Wire Size Calculator for exact sizing.
Common 2500W Devices
Electric oven element, table saw. 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.