16 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 16 A over 120 m (393.7 ft).
Copper Cable (≤3% Drop)4 mm²Drop: 17.79V (2.58%)
Aluminum Cable (≤3% Drop)6 mm²Drop: 19.57V (2.84%)
Voltage at Load672.2 VLine Loss: 493.1 W
Max Power & Breaker19.12 kW16A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 16A at 120m
| 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 | 47.44 V (6.88%) | 642.6 V | 78.26 V (11.34%) | 1314.8 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 28.47 V (4.13%) | 661.5 V | 46.96 V (6.81%) | 788.9 W | ~ ≤5% |
| 4 mm² | 32 A | 25 A | 17.79 V (2.58%) | 672.2 V | 29.35 V (4.25%) | 493.1 W | ✓ OK (≤3%) |
| 6 mm² | 41 A | 32 A | 11.86 V (1.72%) | 678.1 V | 19.57 V (2.84%) | 328.7 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 7.12 V (1.03%) | 682.9 V | 11.74 V (1.7%) | 197.2 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 4.45 V (0.64%) | 685.6 V | 7.34 V (1.06%) | 123.3 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 2.85 V (0.41%) | 687.2 V | 4.7 V (0.68%) | 78.9 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 2.03 V (0.29%) | 688.0 V | 3.35 V (0.49%) | 56.3 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 1.42 V (0.21%) | 688.6 V | 2.35 V (0.34%) | 39.4 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 1.02 V (0.15%) | 689.0 V | 1.68 V (0.24%) | 28.2 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.75 V (0.11%) | 689.3 V | 1.24 V (0.18%) | 20.8 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.59 V (0.09%) | 689.4 V | 0.98 V (0.14%) | 16.4 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.47 V (0.07%) | 689.5 V | 0.78 V (0.11%) | 13.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.38 V (0.06%) | 689.6 V | 0.63 V (0.09%) | 10.7 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.3 V (0.04%) | 689.7 V | 0.49 V (0.07%) | 8.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.24 V (0.03%) | 689.8 V | 0.39 V (0.06%) | 6.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.18 V (0.03%) | 689.8 V | 0.29 V (0.04%) | 4.9 W | ✓ OK (≤3%) |
FAQ — 16 Amp Cable Size at 120 Meters (690V Three-Phase (Wind / Heavy Industrial))
What mm² cable size is required for 16A at 120 meters (690V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4 mm² copper cable for 16A over 120m at 690V (voltage drop: 17.79V or 2.58%).
What is the power capacity of 16A at 690V?
At unity power factor, 16A at 690V supports 19.12 kW with a standard 16A circuit breaker.
Related Lengths & Currents (690V)
16A · 5m (690V)16A · 10m (690V)16A · 15m (690V)16A · 20m (690V)16A · 25m (690V)16A · 30m (690V)16A · 35m (690V)16A · 40m (690V)16A · 45m (690V)16A · 50m (690V)16A · 60m (690V)16A · 70m (690V)10A · 120m (690V)20A · 120m (690V)25A · 120m (690V)32A · 120m (690V)40A · 120m (690V)50A · 120m (690V)63A · 120m (690V)80A · 120m (690V)100A · 120m (690V)125A · 120m (690V)160A · 120m (690V)200A · 120m (690V)