6 AWG wire specifications: 4.1154 mm diameter, 13.3018 mm² area, 55A ampacity (copper, 75°C). Resistance, weight, and common uses.
| Diameter | 4.1154 mm · 0.162023" · 162.02 mils |
| Cross-sectional area | 13.3018 mm² · 26,251 circular mils |
| Resistance (copper, 20°C) | 1.2961 Ω/km · 0.395 Ω/1000ft |
| Resistance (aluminum, 20°C) | 1.9922 Ω/km · 0.6072 Ω/1000ft |
| Ampacity — copper 60°C | 55 A |
| Ampacity — copper 75°C | 55 A |
| Ampacity — copper 90°C | 75 A |
| Ampacity — aluminum 75°C | 40 A |
| Weight (copper) | 119.184 kg/km · 80.088 lbs/1000ft |
| Weight (aluminum) | 35.915 kg/km · 24.134 lbs/1000ft |
| Closest metric size | 13.3 mm² |
| Skin depth at 60 Hz | 8.531 mm |
| Type | Temperature | Description |
|---|---|---|
| THHN/THWN-2 | 90°C dry / 75°C wet | Most common for building wire |
| XHHW-2 | 90°C dry and wet | Cross-linked polyethylene, moisture resistant |
| USE-2 | 90°C | Underground service entrance |
| NM-B (Romex) | 90°C | Non-metallic sheathed cable for residential |
| UF-B | 60°C | Underground feeder, direct burial |