10 Amp Cable Size at 25 Meters (400V Three-Phase (IEC European Grid))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 10 A over 25 m (82.0 ft).
Copper Cable (≤3% Drop)1.5 mm²Drop: 6.18V (1.54%)
Aluminum Cable (≤3% Drop)1.5 mm²Drop: 10.19V (2.55%)
Voltage at Load393.8 VLine Loss: 107.0 W
Max Power & Breaker6.93 kW10A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 10A at 25m
| 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 | 6.18 V (1.54%) | 393.8 V | 10.19 V (2.55%) | 107.0 W | ✓ OK (≤3%) |
| 2.5 mm² | 24 A | 18 A | 3.71 V (0.93%) | 396.3 V | 6.11 V (1.53%) | 64.2 W | ✓ OK (≤3%) |
| 4 mm² | 32 A | 25 A | 2.32 V (0.58%) | 397.7 V | 3.82 V (0.96%) | 40.1 W | ✓ OK (≤3%) |
| 6 mm² | 41 A | 32 A | 1.54 V (0.39%) | 398.5 V | 2.55 V (0.64%) | 26.7 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 0.93 V (0.23%) | 399.1 V | 1.53 V (0.38%) | 16.0 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 0.58 V (0.14%) | 399.4 V | 0.96 V (0.24%) | 10.0 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.37 V (0.09%) | 399.6 V | 0.61 V (0.15%) | 6.4 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.26 V (0.07%) | 399.7 V | 0.44 V (0.11%) | 4.6 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.19 V (0.05%) | 399.8 V | 0.31 V (0.08%) | 3.2 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.13 V (0.03%) | 399.9 V | 0.22 V (0.05%) | 2.3 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.1 V (0.02%) | 399.9 V | 0.16 V (0.04%) | 1.7 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.08 V (0.02%) | 399.9 V | 0.13 V (0.03%) | 1.3 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.06 V (0.02%) | 399.9 V | 0.1 V (0.03%) | 1.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.05 V (0.01%) | 399.9 V | 0.08 V (0.02%) | 0.9 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.04 V (0.01%) | 400.0 V | 0.06 V (0.02%) | 0.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.03 V (0.01%) | 400.0 V | 0.05 V (0.01%) | 0.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.02 V (0.01%) | 400.0 V | 0.04 V (0.01%) | 0.4 W | ✓ OK (≤3%) |
FAQ — 10 Amp Cable Size at 25 Meters (400V Three-Phase (IEC European Grid))
What mm² cable size is required for 10A at 25 meters (400V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 1.5 mm² copper cable for 10A over 25m at 400V (voltage drop: 6.18V or 1.54%).
What is the power capacity of 10A at 400V?
At unity power factor, 10A at 400V supports 6.93 kW with a standard 10A circuit breaker.
Related Lengths & Currents (400V)
10A · 5m (400V)10A · 10m (400V)10A · 15m (400V)10A · 20m (400V)10A · 30m (400V)10A · 35m (400V)10A · 40m (400V)10A · 45m (400V)10A · 50m (400V)10A · 60m (400V)10A · 70m (400V)16A · 25m (400V)20A · 25m (400V)25A · 25m (400V)32A · 25m (400V)40A · 25m (400V)50A · 25m (400V)63A · 25m (400V)80A · 25m (400V)100A · 25m (400V)125A · 25m (400V)160A · 25m (400V)200A · 25m (400V)