5 Amp Cable Size at 100 Meters (415V Three-Phase (UK / Australia Industrial))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 5 A over 100 m (328.1 ft).
Copper Cable (≤3% Drop)1.5 mm²Drop: 12.36V (2.98%)
Aluminum Cable (≤3% Drop)2.5 mm²Drop: 12.23V (2.95%)
Voltage at Load402.6 VLine Loss: 107.0 W
Max Power & Breaker3.59 kW6A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 5A at 100m
| 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 | 12.36 V (2.98%) | 402.6 V | 20.38 V (4.91%) | 107.0 W | ✓ OK (≤3%) |
| 2.5 mm² | 24 A | 18 A | 7.41 V (1.79%) | 407.6 V | 12.23 V (2.95%) | 64.2 W | ✓ OK (≤3%) |
| 4 mm² | 32 A | 25 A | 4.63 V (1.12%) | 410.4 V | 7.64 V (1.84%) | 40.1 W | ✓ OK (≤3%) |
| 6 mm² | 41 A | 32 A | 3.09 V (0.74%) | 411.9 V | 5.1 V (1.23%) | 26.7 W | ✓ OK (≤3%) |
| 10 mm² | 57 A | 44 A | 1.85 V (0.45%) | 413.1 V | 3.06 V (0.74%) | 16.0 W | ✓ OK (≤3%) |
| 16 mm² | 76 A | 59 A | 1.16 V (0.28%) | 413.8 V | 1.91 V (0.46%) | 10.0 W | ✓ OK (≤3%) |
| 25 mm² | 101 A | 78 A | 0.74 V (0.18%) | 414.3 V | 1.22 V (0.29%) | 6.4 W | ✓ OK (≤3%) |
| 35 mm² | 125 A | 97 A | 0.53 V (0.13%) | 414.5 V | 0.87 V (0.21%) | 4.6 W | ✓ OK (≤3%) |
| 50 mm² | 151 A | 118 A | 0.37 V (0.09%) | 414.6 V | 0.61 V (0.15%) | 3.2 W | ✓ OK (≤3%) |
| 70 mm² | 192 A | 150 A | 0.26 V (0.06%) | 414.7 V | 0.44 V (0.11%) | 2.3 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.2 V (0.05%) | 414.8 V | 0.32 V (0.08%) | 1.7 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.15 V (0.04%) | 414.8 V | 0.25 V (0.06%) | 1.3 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.12 V (0.03%) | 414.9 V | 0.2 V (0.05%) | 1.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.1 V (0.02%) | 414.9 V | 0.17 V (0.04%) | 0.9 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.08 V (0.02%) | 414.9 V | 0.13 V (0.03%) | 0.7 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.06 V (0.01%) | 414.9 V | 0.1 V (0.02%) | 0.5 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.05 V (0.01%) | 415.0 V | 0.08 V (0.02%) | 0.4 W | ✓ OK (≤3%) |
FAQ — 5 Amp Cable Size at 100 Meters (415V Three-Phase (UK / Australia Industrial))
What mm² cable size is required for 5A at 100 meters (415V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 1.5 mm² copper cable for 5A over 100m at 415V (voltage drop: 12.36V or 2.98%).
What is the power capacity of 5A at 415V?
At unity power factor, 5A at 415V supports 3.59 kW with a standard 6A circuit breaker.
Related Lengths & Currents (415V)
5A · 5m (415V)5A · 10m (415V)5A · 15m (415V)5A · 20m (415V)5A · 25m (415V)5A · 30m (415V)5A · 35m (415V)5A · 40m (415V)5A · 45m (415V)5A · 50m (415V)5A · 60m (415V)5A · 70m (415V)10A · 100m (415V)16A · 100m (415V)20A · 100m (415V)25A · 100m (415V)32A · 100m (415V)40A · 100m (415V)50A · 100m (415V)63A · 100m (415V)80A · 100m (415V)100A · 100m (415V)125A · 100m (415V)160A · 100m (415V)200A · 100m (415V)