2/0 AWG wire specifications: 9.2658 mm diameter, 67.4309 mm² area, 145A ampacity (copper, 75°C). Resistance, weight, and common uses.
| Diameter | 9.2658 mm · 0.364797" · 364.8 mils |
| Cross-sectional area | 67.4309 mm² · 133,076 circular mils |
| Resistance (copper, 20°C) | 0.2557 Ω/km · 0.0779 Ω/1000ft |
| Resistance (aluminum, 20°C) | 0.393 Ω/km · 0.1198 Ω/1000ft |
| Ampacity — copper 60°C | 145 A |
| Ampacity — copper 75°C | 145 A |
| Ampacity — copper 90°C | 195 A |
| Ampacity — aluminum 75°C | 115 A |
| Weight (copper) | 604.181 kg/km · 405.99 lbs/1000ft |
| Weight (aluminum) | 182.063 kg/km · 122.341 lbs/1000ft |
| Closest metric size | 67.4 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 |