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3000 watts to amps

3,000 watts is 25 amps at 120 volts and 12.5 amps at 240 volts, at a power factor of 1.

3000 watts to amps at common voltages

3,000 watts in amps by voltage, power factor 1
VoltageAmps, A
12 V DC250
24 V DC125
120 V25
240 V12.5
208 V three phase8.33
480 V three phase3.61
0100200300Amps, AVoltage12 V DC12 V DC, Amps: 25025024 V DC24 V DC, Amps: 125125120 V120 V, Amps: 2525240 V240 V, Amps: 12.512.5208 V three phase208 V three phase, Amps: 8.338.33480 V three phase480 V three phase, Amps: 3.613.61
3,000 watts in amps by voltage.

The AC and three-phase rows assume a power factor of 1, as for heaters and incandescent lamps. Motors and electronics draw more current for the same watts.

How to convert 3000 watts to amps

Amps = watts ÷ volts: 3,000 W ÷ 120 V = 25 A, and 3,000 W ÷ 240 V = 12.5 A. On three phase, amps = watts ÷ (1.732 × volts): 3,000 W ÷ (1.732 × 208 V) = 8.33 A per line. At a power factor of 0.8, 3,000 W at 120 V draws 31.25 A.

How much of a 15 or 20 amp circuit 3,000 watts uses

On 120 V, 3,000 watts is more than a 15 or 20 amp circuit can carry: run it on 240 V or a larger dedicated circuit. As a continuous load, 25 A at 120 V needs at least a 35 amp breaker, and 12.5 A at 240 V needs a 20 amp breaker (125% of the current, rounded up to a standard size).

Nearby values

Amps for 500 to 5,000 watts at 120 V and 240 V
Watts, W120 V, A240 V, A
5004.172.08
1,0008.334.17
1,50012.56.25
2,00016.678.33
3,0002512.5
5,00041.6720.83

Appliances that draw about 3,000 watts

Watts to amps calculator

Convert
W
V
Phase

1 for heaters and lights; motors and electronics 0.8–0.95

Result
25 A
Power
3,000 W
Voltage
120 V
Share of a 15 A circuit at this voltage
167%

How it is calculated

  1. Amps = 3,000 ÷ (120) = 25

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