10 AWG Wire: Ampacity, Uses & Specs | PES Supply
10 AWG Wire — Ampacity, Uses & Specifications
10 AWG copper wire is rated for 30-35 amps. Common applications include electric dryers, water heaters, window AC units, and 30A RV connections.
10 AWG Wire Specifications
| Specification | Value |
|---|---|
| AWG Size | 10 |
| Ampacity (60°C / 140°F) | 30A |
| Ampacity (75°C / 167°F) | 35A |
| Resistance (Ω/1000 ft, Copper) | 0.999 |
| Wire Types Available | THHN, THWN-2, XHHW-2, USE-2, PV Wire, NM-B (Romex), MC Cable |
| Typical Breaker Size | 30A (60°C) or 35A (75°C) |
Common Applications
10 AWG copper wire is rated for 30-35 amps. Common applications include electric dryers, water heaters, window AC units, and 30A RV connections.
Voltage Drop Reference (10 AWG Copper, 240V)
| Distance (ft) | VD @ 35A | % Drop | Status |
|---|---|---|---|
| 25 ft | 1.75V | 0.7% | Good |
| 50 ft | 3.50V | 1.5% | Good |
| 100 ft | 6.99V | 2.9% | Good |
| 150 ft | 10.49V | 4.4% | Upsize |
| 200 ft | 13.99V | 5.8% | Upsize |
Compatible Breakers and Outlets
For 10 AWG wire at 75°C rating (35A), use a 35A double-pole breaker (240V circuits) or 30A single-pole breaker (120V circuits at 60°C rating).
Related Wire Types
- THHN/THWN-2: For conduit runs, rated 90°C dry / 75°C wet
- NM-B (Romex): For indoor residential wiring, rated 60°C
- MC Cable: Metal-clad, for commercial and exposed runs
- USE-2 / PV Wire: For solar and direct burial, rated 90°C
- XHHW-2: For wet/dry locations, rated 90°C