110 Amp Cable Size at 20 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 110 A over 20 m (65.6 ft).
Copper Cable (≤3% Drop)35 mm²Drop: 2.33V (0.34%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 2.69V (0.39%)
Voltage at Load687.7 VLine Loss: 443.9 W
Max Power & Breaker131.46 kW110A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 110A at 20m
| 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 | 54.36 V (7.88%) | 635.6 V | 89.67 V (13.0%) | 10357.6 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 32.62 V (4.73%) | 657.4 V | 53.8 V (7.8%) | 6214.6 W | Drop High |
| 4 mm² | 32 A | 25 A | 20.39 V (2.95%) | 669.6 V | 33.63 V (4.87%) | 3884.1 W | Drop High |
| 6 mm² | 41 A | 32 A | 13.59 V (1.97%) | 676.4 V | 22.42 V (3.25%) | 2589.4 W | Drop High |
| 10 mm² | 57 A | 44 A | 8.15 V (1.18%) | 681.8 V | 13.45 V (1.95%) | 1553.6 W | Drop High |
| 16 mm² | 76 A | 59 A | 5.1 V (0.74%) | 684.9 V | 8.41 V (1.22%) | 971.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 3.26 V (0.47%) | 686.7 V | 5.38 V (0.78%) | 621.5 W | Drop High |
| 35 mm² | 125 A | 97 A | 2.33 V (0.34%) | 687.7 V | 3.84 V (0.56%) | 443.9 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 1.63 V (0.24%) | 688.4 V | 2.69 V (0.39%) | 310.7 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 1.16 V (0.17%) | 688.8 V | 1.92 V (0.28%) | 221.9 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.86 V (0.12%) | 689.1 V | 1.42 V (0.21%) | 163.5 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.68 V (0.1%) | 689.3 V | 1.12 V (0.16%) | 129.5 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.54 V (0.08%) | 689.5 V | 0.9 V (0.13%) | 103.6 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.44 V (0.06%) | 689.6 V | 0.73 V (0.11%) | 84.0 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.34 V (0.05%) | 689.7 V | 0.56 V (0.08%) | 64.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.27 V (0.04%) | 689.7 V | 0.45 V (0.06%) | 51.8 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.2 V (0.03%) | 689.8 V | 0.34 V (0.05%) | 38.8 W | ✓ OK (≤3%) |
FAQ — 110 Amp Cable Size at 20 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 110A at 20 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 35 mm² copper cable for 110A over 20m at 690V (voltage drop: 2.33V or 0.34%).
What is the power capacity of 110A at 690V?
At unity power factor, 110A at 690V supports 131.46 kW with a standard 110A circuit breaker.
Related Lengths & Currents (690V)
110A · 5m (690V)110A · 10m (690V)110A · 15m (690V)110A · 25m (690V)110A · 30m (690V)110A · 35m (690V)110A · 40m (690V)110A · 45m (690V)110A · 50m (690V)110A · 60m (690V)110A · 70m (690V)10A · 20m (690V)16A · 20m (690V)20A · 20m (690V)25A · 20m (690V)32A · 20m (690V)40A · 20m (690V)50A · 20m (690V)63A · 20m (690V)80A · 20m (690V)100A · 20m (690V)125A · 20m (690V)160A · 20m (690V)200A · 20m (690V)