30 Amp Cable Size at 5 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 30 A over 5 m (16.4 ft).
Copper Cable (≤3% Drop)4 mm²Drop: 1.39V (0.2%)
Aluminum Cable (≤3% Drop)6 mm²Drop: 1.53V (0.22%)
Voltage at Load688.6 VLine Loss: 72.2 W
Max Power & Breaker35.85 kW30A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 30A at 5m
| 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 | 3.71 V (0.54%) | 686.3 V | 6.11 V (0.89%) | 192.6 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2.22 V (0.32%) | 687.8 V | 3.67 V (0.53%) | 115.6 W | Drop High |
| 4 mm² | 32 A | 25 A | 1.39 V (0.2%) | 688.6 V | 2.29 V (0.33%) | 72.2 W | ✓ OK (≤3%) |
| 6 mm² | 41 A | 32 A | 0.93 V (0.13%) | 689.1 V | 1.53 V (0.22%) | 48.1 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 0.56 V (0.08%) | 689.4 V | 0.92 V (0.13%) | 28.9 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 0.35 V (0.05%) | 689.7 V | 0.57 V (0.08%) | 18.1 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.22 V (0.03%) | 689.8 V | 0.37 V (0.05%) | 11.6 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.16 V (0.02%) | 689.8 V | 0.26 V (0.04%) | 8.3 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.11 V (0.02%) | 689.9 V | 0.18 V (0.03%) | 5.8 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.08 V (0.01%) | 689.9 V | 0.13 V (0.02%) | 4.1 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.06 V (0.01%) | 689.9 V | 0.1 V (0.01%) | 3.0 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.05 V (0.01%) | 690.0 V | 0.08 V (0.01%) | 2.4 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.04 V (0.01%) | 690.0 V | 0.06 V (0.01%) | 1.9 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.03 V (0.0%) | 690.0 V | 0.05 V (0.01%) | 1.6 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.02 V (0.0%) | 690.0 V | 0.04 V (0.01%) | 1.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.02 V (0.0%) | 690.0 V | 0.03 V (0.0%) | 1.0 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.01 V (0.0%) | 690.0 V | 0.02 V (0.0%) | 0.7 W | ✓ OK (≤3%) |
FAQ — 30 Amp Cable Size at 5 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 30A at 5 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4 mm² copper cable for 30A over 5m at 690V (voltage drop: 1.39V or 0.2%).
What is the power capacity of 30A at 690V?
At unity power factor, 30A at 690V supports 35.85 kW with a standard 30A circuit breaker.
Related Lengths & Currents (690V)
30A · 10m (690V)30A · 15m (690V)30A · 20m (690V)30A · 25m (690V)30A · 30m (690V)30A · 35m (690V)30A · 40m (690V)30A · 45m (690V)30A · 50m (690V)30A · 60m (690V)30A · 70m (690V)10A · 5m (690V)16A · 5m (690V)20A · 5m (690V)25A · 5m (690V)32A · 5m (690V)40A · 5m (690V)50A · 5m (690V)63A · 5m (690V)80A · 5m (690V)100A · 5m (690V)125A · 5m (690V)160A · 5m (690V)200A · 5m (690V)