300 Amp Cable Size at 350 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 350 m (1148.3 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 5.62V (2.44%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 18.53V (8.06%)
Voltage at Load224.4 VLine Loss: 1685.2 W
Max Power & Breaker69.0 kW300A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 350m
| 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 | 2996.0 V (1302.61%) | 0.0 V | 4942.0 V (2148.7%) | 898800.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 1797.6 V (781.57%) | 0.0 V | 2965.2 V (1289.22%) | 539280.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1123.5 V (488.48%) | 0.0 V | 1853.25 V (805.76%) | 337050.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 749.0 V (325.65%) | 0.0 V | 1235.5 V (537.17%) | 224700.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 449.4 V (195.39%) | 0.0 V | 741.3 V (322.3%) | 134820.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 280.88 V (122.12%) | 0.0 V | 463.31 V (201.44%) | 84262.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 179.76 V (78.16%) | 50.2 V | 296.52 V (128.92%) | 53928.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 128.4 V (55.83%) | 101.6 V | 211.8 V (92.09%) | 38520.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 89.88 V (39.08%) | 140.1 V | 148.26 V (64.46%) | 26964.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 64.2 V (27.91%) | 165.8 V | 105.9 V (46.04%) | 19260.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 47.31 V (20.57%) | 182.7 V | 78.03 V (33.93%) | 14191.6 W | Drop High |
| 120 mm² | 269 A | 210 A | 37.45 V (16.28%) | 192.6 V | 61.77 V (26.86%) | 11235.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 29.96 V (13.03%) | 200.0 V | 49.42 V (21.49%) | 8988.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 24.29 V (10.56%) | 205.7 V | 40.07 V (17.42%) | 7287.6 W | Drop High |
| 240 mm² | 415 A | 324 A | 18.72 V (8.14%) | 211.3 V | 30.89 V (13.43%) | 5617.5 W | Drop High |
| 300 mm² | 477 A | 372 A | 14.98 V (6.51%) | 215.0 V | 24.71 V (10.74%) | 4494.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 11.23 V (4.88%) | 218.8 V | 18.53 V (8.06%) | 3370.5 W | ~ ≤5% |
FAQ — 300 Amp Cable Size at 350 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 300A at 350 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 300A over 350m at 230V (voltage drop: 5.62V or 2.44%).
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 · 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 · 350m (230V)16A · 350m (230V)20A · 350m (230V)25A · 350m (230V)32A · 350m (230V)40A · 350m (230V)50A · 350m (230V)63A · 350m (230V)80A · 350m (230V)100A · 350m (230V)125A · 350m (230V)160A · 350m (230V)200A · 350m (230V)