4/0 AWG (American Wire Gauge) wire specifications: 11.684 mm diameter, 107.2193 mm² area, 230A ampacity (copper, 75°C). Resistance, weight, and common uses.
| Diameter | 11.684 mm · 0.46" · 460.0 mils |
| Cross-sectional area | 107.2193 mm² · 211,600 circular mils |
| Resistance (copper, 20°C) | 0.1608 Ω/km · 0.049 Ω/1000ft |
| Resistance (aluminum, 20°C) | 0.2472 Ω/km · 0.0753 Ω/1000ft |
| Ampacity — copper 60°C | 195 A |
| Ampacity — copper 75°C | 230 A |
| Ampacity — copper 90°C | 260 A |
| Ampacity — aluminum 75°C | 180 A |
| Weight (copper) | 960.685 kg/km · 645.55 lbs/1000ft |
| Weight (aluminum) | 289.492 kg/km · 194.529 lbs/1000ft |
| Closest IEC 60228 size | 120 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 |