Wire Size for 20 Amp 10 Feet (120V)
| Standard | Wire Size | Ampacity | Volt Drop | Drop % |
|---|
| NEC (US) | AWG 14 (2.08 mm²) | 20 A | 1.23 V | 1.02% |
| IEC (EU) | 2.5 mm² | 24 A | 1.02 V | 0.85% |
| BS (UK) | 2.5 mm² | 24 A | 1.02 V | 0.85% |
| AS/NZS | 2.5 mm² | 24 A | 1.02 V | 0.85% |
About AWG 14
- Typical use
- 15 A residential branch circuits — lighting, receptacles
- Max breaker
- 15 A
- Temperature rating
- 60 °C
- NEC reference
- NEC 240.4(D)(3)
Always verify local code requirements. Wire sizing depends on insulation type, ambient temperature, and conduit fill.
Adjacent Current Comparison
| Current | AWG | mm² | Ampacity | Drop % |
|---|
| 15 A | AWG 14 | 2.08 mm² | 20 A | 0.77% |
| 20 A | AWG 14 | 2.08 mm² | 20 A | 1.02% |
| 30 A | AWG 10 | 5.26 mm² | 35 A | 0.61% |
Adjacent Distance Comparison
| Distance | AWG | mm² | Ampacity | Drop % |
|---|
| 10 ft | AWG 14 | 2.08 mm² | 20 A | 1.02% |
| 25 ft | AWG 14 | 2.08 mm² | 20 A | 2.56% |