6 AWG Wire: Ampacity, Uses & Specs | PES Supply
6 AWG Wire — Ampacity, Uses & Specifications
6 AWG copper wire is rated for 55-65 amps. Used for EV chargers (48A), sub-panel feeds, spa/hot tub circuits, and large appliance circuits.
6 AWG Wire Specifications
| Specification | Value |
|---|---|
| AWG Size | 6 |
| Ampacity (60°C / 140°F) | 55A |
| Ampacity (75°C / 167°F) | 65A |
| Resistance (Ω/1000 ft, Copper) | 0.395 |
| Wire Types Available | THHN, THWN-2, XHHW-2, USE-2, PV Wire, NM-B (Romex), MC Cable |
| Typical Breaker Size | 55A (60°C) or 65A (75°C) |
Common Applications
6 AWG copper wire is rated for 55-65 amps. Used for EV chargers (48A), sub-panel feeds, spa/hot tub circuits, and large appliance circuits.
Voltage Drop Reference (6 AWG Copper, 240V)
| Distance (ft) | VD @ 65A | % Drop | Status |
|---|---|---|---|
| 25 ft | 1.28V | 0.5% | Good |
| 50 ft | 2.57V | 1.1% | Good |
| 100 ft | 5.13V | 2.1% | Good |
| 150 ft | 7.70V | 3.2% | Upsize |
| 200 ft | 10.27V | 4.3% | Upsize |
Compatible Breakers and Outlets
For 6 AWG wire at 75°C rating (65A), use a 65A double-pole breaker (240V circuits) or 55A 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