15 Amp Cable Size at 300 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 15 A over 300 m (984.3 ft).
Copper Cable (≤3% Drop)35 mm²Drop: 5.5V (2.39%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 6.35V (2.76%)
Voltage at Load224.5 VLine Loss: 82.5 W
Max Power & Breaker3.45 kW15A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 15A at 300m
| 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 | 128.4 V (55.83%) | 101.6 V | 211.8 V (92.09%) | 1926.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 77.04 V (33.5%) | 153.0 V | 127.08 V (55.25%) | 1155.6 W | Drop High |
| 4 mm² | 32 A | 25 A | 48.15 V (20.93%) | 181.8 V | 79.42 V (34.53%) | 722.2 W | Drop High |
| 6 mm² | 41 A | 32 A | 32.1 V (13.96%) | 197.9 V | 52.95 V (23.02%) | 481.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 19.26 V (8.37%) | 210.7 V | 31.77 V (13.81%) | 288.9 W | Drop High |
| 16 mm² | 76 A | 59 A | 12.04 V (5.23%) | 218.0 V | 19.86 V (8.63%) | 180.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 7.7 V (3.35%) | 222.3 V | 12.71 V (5.53%) | 115.6 W | ~ ≤5% |
| 35 mm² | 125 A | 97 A | 5.5 V (2.39%) | 224.5 V | 9.08 V (3.95%) | 82.5 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 3.85 V (1.67%) | 226.1 V | 6.35 V (2.76%) | 57.8 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 2.75 V (1.2%) | 227.2 V | 4.54 V (1.97%) | 41.3 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 2.03 V (0.88%) | 228.0 V | 3.34 V (1.45%) | 30.4 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 1.6 V (0.7%) | 228.4 V | 2.65 V (1.15%) | 24.1 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 1.28 V (0.56%) | 228.7 V | 2.12 V (0.92%) | 19.3 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 1.04 V (0.45%) | 229.0 V | 1.72 V (0.75%) | 15.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.8 V (0.35%) | 229.2 V | 1.32 V (0.58%) | 12.0 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.64 V (0.28%) | 229.4 V | 1.06 V (0.46%) | 9.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.48 V (0.21%) | 229.5 V | 0.79 V (0.35%) | 7.2 W | ✓ OK (≤3%) |
FAQ — 15 Amp Cable Size at 300 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 15A at 300 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 35 mm² copper cable for 15A over 300m at 230V (voltage drop: 5.5V or 2.39%).
What is the power capacity of 15A at 230V?
At unity power factor, 15A at 230V supports 3.45 kW with a standard 15A circuit breaker.
Related Lengths & Currents (230V)
15A · 5m (230V)15A · 10m (230V)15A · 15m (230V)15A · 20m (230V)15A · 25m (230V)15A · 30m (230V)15A · 35m (230V)15A · 40m (230V)15A · 45m (230V)15A · 50m (230V)15A · 60m (230V)15A · 70m (230V)10A · 300m (230V)16A · 300m (230V)20A · 300m (230V)25A · 300m (230V)32A · 300m (230V)40A · 300m (230V)50A · 300m (230V)63A · 300m (230V)80A · 300m (230V)100A · 300m (230V)125A · 300m (230V)160A · 300m (230V)200A · 300m (230V)