80 Amp Cable Size at 30 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 80 A over 30 m (98.4 ft).
Copper Cable (≤3% Drop)25 mm²Drop: 3.56V (0.52%)
Aluminum Cable (≤3% Drop)35 mm²Drop: 4.19V (0.61%)
Voltage at Load686.4 VLine Loss: 493.1 W
Max Power & Breaker95.61 kW80A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 80A at 30m
| 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 | 59.31 V (8.59%) | 630.7 V | 97.83 V (14.18%) | 8217.6 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 35.58 V (5.16%) | 654.4 V | 58.7 V (8.51%) | 4930.6 W | Drop High |
| 4 mm² | 32 A | 25 A | 22.24 V (3.22%) | 667.8 V | 36.68 V (5.32%) | 3081.6 W | Drop High |
| 6 mm² | 41 A | 32 A | 14.83 V (2.15%) | 675.2 V | 24.46 V (3.54%) | 2054.4 W | Drop High |
| 10 mm² | 57 A | 44 A | 8.9 V (1.29%) | 681.1 V | 14.67 V (2.13%) | 1232.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 5.56 V (0.81%) | 684.4 V | 9.17 V (1.33%) | 770.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 3.56 V (0.52%) | 686.4 V | 5.87 V (0.85%) | 493.1 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 2.54 V (0.37%) | 687.5 V | 4.19 V (0.61%) | 352.2 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 1.78 V (0.26%) | 688.2 V | 2.93 V (0.43%) | 246.5 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 1.27 V (0.18%) | 688.7 V | 2.1 V (0.3%) | 176.1 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.94 V (0.14%) | 689.1 V | 1.54 V (0.22%) | 129.8 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.74 V (0.11%) | 689.3 V | 1.22 V (0.18%) | 102.7 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.59 V (0.09%) | 689.4 V | 0.98 V (0.14%) | 82.2 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.48 V (0.07%) | 689.5 V | 0.79 V (0.11%) | 66.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.37 V (0.05%) | 689.6 V | 0.61 V (0.09%) | 51.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.3 V (0.04%) | 689.7 V | 0.49 V (0.07%) | 41.1 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.22 V (0.03%) | 689.8 V | 0.37 V (0.05%) | 30.8 W | ✓ OK (≤3%) |
FAQ — 80 Amp Cable Size at 30 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 80A at 30 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 25 mm² copper cable for 80A over 30m at 690V (voltage drop: 3.56V or 0.52%).
What is the power capacity of 80A at 690V?
At unity power factor, 80A at 690V supports 95.61 kW with a standard 80A circuit breaker.
Related Lengths & Currents (690V)
80A · 5m (690V)80A · 10m (690V)80A · 15m (690V)80A · 20m (690V)80A · 25m (690V)80A · 35m (690V)80A · 40m (690V)80A · 45m (690V)80A · 50m (690V)80A · 60m (690V)80A · 70m (690V)10A · 30m (690V)16A · 30m (690V)20A · 30m (690V)25A · 30m (690V)32A · 30m (690V)40A · 30m (690V)50A · 30m (690V)63A · 30m (690V)100A · 30m (690V)125A · 30m (690V)160A · 30m (690V)200A · 30m (690V)