Wire Size for 1.32 Amps
Typical copper wire gauges for 1.32 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 1.32A 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.
1.32A Wire Gauge by Distance
| Distance | Copper Gauge | V-Drop (Cu) | NEC Status |
|---|---|---|---|
| 25 ft | 14 AWG | 0.2072V (0.1727%) | OK |
| 50 ft | 14 AWG | 0.4145V (0.3454%) | OK |
| 75 ft | 14 AWG | 0.6217V (0.5181%) | OK |
| 100 ft | 14 AWG | 0.829V (0.6908%) | OK |
| 125 ft | 14 AWG | 1.04V (0.8635%) | OK |
| 150 ft | 14 AWG | 1.24V (1.04%) | OK |
| 175 ft | 14 AWG | 1.45V (1.21%) | OK |
| 200 ft | 14 AWG | 1.66V (1.38%) | OK |
| 250 ft | 14 AWG | 2.07V (1.73%) | OK |
| 300 ft | 14 AWG | 2.49V (2.07%) | OK |
| 400 ft | 14 AWG | 3.32V (2.76%) | OK |
| 500 ft | 12 AWG | 2.61V (2.18%) | 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.