80 Amp Cable Size at 400 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 80 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 9.88V (2.38%)
Aluminum Cable (≤3% Drop)185 mm²Drop: 10.58V (2.55%)
Voltage at Load405.1 VLine Loss: 1369.6 W
Max Power & Breaker57.5 kW80A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 80A at 400m
| 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 | 790.74 V (190.54%) | 0.0 V | 1304.35 V (314.3%) | 109568.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 474.44 V (114.32%) | 0.0 V | 782.61 V (188.58%) | 65740.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 296.53 V (71.45%) | 118.5 V | 489.13 V (117.86%) | 41088.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 197.68 V (47.63%) | 217.3 V | 326.09 V (78.58%) | 27392.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 118.61 V (28.58%) | 296.4 V | 195.65 V (47.15%) | 16435.2 W | Drop High |
| 16 mm² | 76 A | 59 A | 74.13 V (17.86%) | 340.9 V | 122.28 V (29.47%) | 10272.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 47.44 V (11.43%) | 367.6 V | 78.26 V (18.86%) | 6574.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 33.89 V (8.17%) | 381.1 V | 55.9 V (13.47%) | 4695.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 23.72 V (5.72%) | 391.3 V | 39.13 V (9.43%) | 3287.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 16.94 V (4.08%) | 398.1 V | 27.95 V (6.74%) | 2347.9 W | ~ ≤5% |
| 95 mm² | 232 A | 181 A | 12.49 V (3.01%) | 402.5 V | 20.59 V (4.96%) | 1730.0 W | ~ ≤5% |
| 120 mm² | 269 A | 210 A | 9.88 V (2.38%) | 405.1 V | 16.3 V (3.93%) | 1369.6 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 7.91 V (1.91%) | 407.1 V | 13.04 V (3.14%) | 1095.7 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 6.41 V (1.54%) | 408.6 V | 10.58 V (2.55%) | 888.4 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 4.94 V (1.19%) | 410.1 V | 8.15 V (1.96%) | 684.8 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 3.95 V (0.95%) | 411.0 V | 6.52 V (1.57%) | 547.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 2.97 V (0.71%) | 412.0 V | 4.89 V (1.18%) | 410.9 W | ✓ OK (≤3%) |
FAQ — 80 Amp Cable Size at 400 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 80A at 400 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 120 mm² copper cable for 80A over 400m at 415V (voltage drop: 9.88V or 2.38%).
What is the power capacity of 80A at 415V?
At unity power factor, 80A at 415V supports 57.5 kW with a standard 80A circuit breaker.
Related Lengths & Currents (415V)
80A · 5m (415V)80A · 10m (415V)80A · 15m (415V)80A · 20m (415V)80A · 25m (415V)80A · 30m (415V)80A · 35m (415V)80A · 40m (415V)80A · 45m (415V)80A · 50m (415V)80A · 60m (415V)80A · 70m (415V)10A · 400m (415V)16A · 400m (415V)20A · 400m (415V)25A · 400m (415V)32A · 400m (415V)40A · 400m (415V)50A · 400m (415V)63A · 400m (415V)100A · 400m (415V)125A · 400m (415V)160A · 400m (415V)200A · 400m (415V)