Wire Size for 3.07 Amps
Typical copper wire gauges for 3.07 amps across common run lengths on a 120V circuit, sized to keep voltage drop under 3% and respect the NEC 240.4(D) small-conductor rule. At 3.07A the load sits in residential-branch territory where aluminum is not a typical conductor, so the table lists copper only. Actual install sizing depends on conductor material, insulation/termination temperature rating, cable type, ambient and bundling derates, and local code.
3.07A Wire Gauge by Distance
| Distance | Copper Gauge | V-Drop (Cu) | NEC Status |
|---|---|---|---|
| 25 ft | 14 AWG | 0.482V (0.4017%) | OK |
| 50 ft | 14 AWG | 0.964V (0.8033%) | OK |
| 75 ft | 14 AWG | 1.45V (1.2%) | OK |
| 100 ft | 14 AWG | 1.93V (1.61%) | OK |
| 125 ft | 14 AWG | 2.41V (2.01%) | OK |
| 150 ft | 14 AWG | 2.89V (2.41%) | OK |
| 175 ft | 14 AWG | 3.37V (2.81%) | OK |
| 200 ft | 12 AWG | 2.43V (2.03%) | OK |
| 250 ft | 12 AWG | 3.04V (2.53%) | OK |
| 300 ft | 10 AWG | 2.28V (1.9%) | OK |
| 400 ft | 10 AWG | 3.05V (2.54%) | OK |
| 500 ft | 8 AWG | 2.39V (1.99%) | OK |
Copper gauges use the NEC 240.4(D) branch-circuit cap, not raw 75°C ampacity.
Also Calculate
Other Amperages
This calculator provides estimates for reference purposes only. Always consult a licensed electrician and verify compliance with the National Electrical Code (NEC) and local electrical codes before performing any electrical work.