300 Amp Cable Size at 10 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 300 A over 10 m (32.8 ft).
Copper Cable (≤3% Drop)150 mm²Drop: 0.86V (0.37%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 0.88V (0.38%)
Voltage at Load229.1 VLine Loss: 256.8 W
Max Power & Breaker69.0 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 10m
| Cross-Section (mm²) | Cu Ampacity | Al Ampacity | Cu Voltage Drop | Load Voltage | Al Voltage Drop | Power Loss | Status |
|---|---|---|---|---|---|---|---|
| 1.5 mm² | 16 A | 12 A | 85.6 V (37.22%) | 144.4 V | 141.2 V (61.39%) | 25680.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 51.36 V (22.33%) | 178.6 V | 84.72 V (36.83%) | 15408.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 32.1 V (13.96%) | 197.9 V | 52.95 V (23.02%) | 9630.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 21.4 V (9.3%) | 208.6 V | 35.3 V (15.35%) | 6420.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 12.84 V (5.58%) | 217.2 V | 21.18 V (9.21%) | 3852.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 8.03 V (3.49%) | 222.0 V | 13.24 V (5.76%) | 2407.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 5.14 V (2.23%) | 224.9 V | 8.47 V (3.68%) | 1540.8 W | Drop High |
| 35 mm² | 125 A | 97 A | 3.67 V (1.6%) | 226.3 V | 6.05 V (2.63%) | 1100.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 2.57 V (1.12%) | 227.4 V | 4.24 V (1.84%) | 770.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 1.83 V (0.8%) | 228.2 V | 3.03 V (1.32%) | 550.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.35 V (0.59%) | 228.6 V | 2.23 V (0.97%) | 405.5 W | Drop High |
| 120 mm² | 269 A | 210 A | 1.07 V (0.47%) | 228.9 V | 1.76 V (0.77%) | 321.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.86 V (0.37%) | 229.1 V | 1.41 V (0.61%) | 256.8 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.69 V (0.3%) | 229.3 V | 1.14 V (0.5%) | 208.2 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.54 V (0.23%) | 229.5 V | 0.88 V (0.38%) | 160.5 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.43 V (0.19%) | 229.6 V | 0.71 V (0.31%) | 128.4 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.32 V (0.14%) | 229.7 V | 0.53 V (0.23%) | 96.3 W | ✓ OK (≤3%) |
FAQ — 300 Amp Cable Size at 10 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 300A at 10 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 150 mm² copper cable for 300A over 10m at 230V (voltage drop: 0.86V or 0.37%).
What is the power capacity of 300A at 230V?
At unity power factor, 300A at 230V supports 69.0 kW with a standard 300A circuit breaker.
Related Lengths & Currents (230V)
300A · 5m (230V)300A · 15m (230V)300A · 20m (230V)300A · 25m (230V)300A · 30m (230V)300A · 35m (230V)300A · 40m (230V)300A · 45m (230V)300A · 50m (230V)300A · 60m (230V)300A · 70m (230V)10A · 10m (230V)16A · 10m (230V)20A · 10m (230V)25A · 10m (230V)32A · 10m (230V)40A · 10m (230V)50A · 10m (230V)63A · 10m (230V)80A · 10m (230V)100A · 10m (230V)125A · 10m (230V)160A · 10m (230V)200A · 10m (230V)