300 Amp Cable Size at 5 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 5 m (16.4 ft).
Copper Cable (≤3% Drop)150 mm²Drop: 0.43V (0.19%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 0.44V (0.19%)
Voltage at Load229.6 VLine Loss: 128.4 W
Max Power & Breaker69.0 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 5m
| 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 | 42.8 V (18.61%) | 187.2 V | 70.6 V (30.7%) | 12840.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 25.68 V (11.17%) | 204.3 V | 42.36 V (18.42%) | 7704.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 16.05 V (6.98%) | 213.9 V | 26.47 V (11.51%) | 4815.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 10.7 V (4.65%) | 219.3 V | 17.65 V (7.67%) | 3210.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 6.42 V (2.79%) | 223.6 V | 10.59 V (4.6%) | 1926.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 4.01 V (1.74%) | 226.0 V | 6.62 V (2.88%) | 1203.8 W | Drop High |
| 25 mm² | 101 A | 78 A | 2.57 V (1.12%) | 227.4 V | 4.24 V (1.84%) | 770.4 W | Drop High |
| 35 mm² | 125 A | 97 A | 1.83 V (0.8%) | 228.2 V | 3.03 V (1.32%) | 550.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 1.28 V (0.56%) | 228.7 V | 2.12 V (0.92%) | 385.2 W | Drop High |
| 70 mm² | 192 A | 150 A | 0.92 V (0.4%) | 229.1 V | 1.51 V (0.66%) | 275.1 W | Drop High |
| 95 mm² | 232 A | 181 A | 0.68 V (0.29%) | 229.3 V | 1.11 V (0.48%) | 202.7 W | Drop High |
| 120 mm² | 269 A | 210 A | 0.54 V (0.23%) | 229.5 V | 0.88 V (0.38%) | 160.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.43 V (0.19%) | 229.6 V | 0.71 V (0.31%) | 128.4 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.35 V (0.15%) | 229.7 V | 0.57 V (0.25%) | 104.1 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.27 V (0.12%) | 229.7 V | 0.44 V (0.19%) | 80.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.21 V (0.09%) | 229.8 V | 0.35 V (0.15%) | 64.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.16 V (0.07%) | 229.8 V | 0.26 V (0.12%) | 48.1 W | ✓ OK (≤3%) |
FAQ — 300 Amp Cable Size at 5 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 300A at 5 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 5m at 230V (voltage drop: 0.43V or 0.19%).
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 · 10m (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 · 5m (230V)16A · 5m (230V)20A · 5m (230V)25A · 5m (230V)32A · 5m (230V)40A · 5m (230V)50A · 5m (230V)63A · 5m (230V)80A · 5m (230V)100A · 5m (230V)125A · 5m (230V)160A · 5m (230V)200A · 5m (230V)