Wire Size for 2.16 Amps
Typical copper wire gauges for 2.16 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 2.16A 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.
2.16A Wire Gauge by Distance
| Distance | Copper Gauge | V-Drop (Cu) | NEC Status |
|---|---|---|---|
| 25 ft | 14 AWG | 0.3391V (0.2826%) | OK |
| 50 ft | 14 AWG | 0.6782V (0.5652%) | OK |
| 75 ft | 14 AWG | 1.02V (0.8478%) | OK |
| 100 ft | 14 AWG | 1.36V (1.13%) | OK |
| 125 ft | 14 AWG | 1.7V (1.41%) | OK |
| 150 ft | 14 AWG | 2.03V (1.7%) | OK |
| 175 ft | 14 AWG | 2.37V (1.98%) | OK |
| 200 ft | 14 AWG | 2.71V (2.26%) | OK |
| 250 ft | 14 AWG | 3.39V (2.83%) | OK |
| 300 ft | 12 AWG | 2.57V (2.14%) | OK |
| 400 ft | 12 AWG | 3.42V (2.85%) | OK |
| 500 ft | 10 AWG | 2.68V (2.23%) | 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.