2 AWG Wire Ampacity & Specifications
2 AWG copper wire carries 115A at 75°C (NEC Table 310.16), or 90A for aluminum, and is typically protected by a 110A breaker.
Calculations are built on the 2023 National Electrical Code (NEC) and cross-checked against the published code tables. How we verify. Last updated June 2026.
2 AWG wire has an ampacity of 115A at 75°C for copper and 90A for aluminum (NEC Table 310.16). Its 60°C and 90°C copper ratings are 95A and 130A. It is commonly protected by a 110A breaker.
Copper 75°C
115A
Copper 90°C
130A
Aluminum 75°C
90A
Typical breaker
110A
2 AWG Wire Specifications
| Ampacity — Copper (60 / 75 / 90°C) | 95 / 115 / 130 A |
| Ampacity — Aluminum (60 / 75 / 90°C) | 75 / 90 / 100 A |
| Cross-section | 66,360 circular mils |
| DC resistance — Copper | 0.194 Ω / 1000 ft |
| DC resistance — Aluminum | 0.319 Ω / 1000 ft |
| Typical voltage drop (240V) | 0.9% at 50 ft · 1.8% at 100 ft (at 110A) |
Common Uses for 2 AWG Wire
- 90–115A feeders and services
- 100–125A copper feeders
Ampacities are from NEC Table 310.16. 14, 12 and 10 AWG are limited to 15A, 20A and 30A overcurrent protection (240.4(D)). Terminations rated 60°C or 75°C usually cap the usable ampacity below the 90°C value.
Sizing a circuit?
Use the calculator to size wire for your current, distance and voltage.