45 Amp Cable Size at 400 Meters (230V Single-Phase (IEC Europe / UK / AU))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 45 A over 400 m (1312.3 ft).
Copper Cable (≤3% Drop)120 mm²Drop: 6.42V (2.79%)
Aluminum Cable (≤3% Drop)185 mm²Drop: 6.87V (2.99%)
Voltage at Load223.6 VLine Loss: 288.9 W
Max Power & Breaker10.35 kW45A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 45A at 400m
| 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 | 513.6 V (223.3%) | 0.0 V | 847.2 V (368.35%) | 23112.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 308.16 V (133.98%) | 0.0 V | 508.32 V (221.01%) | 13867.2 W | Drop High |
| 4 mm² | 32 A | 25 A | 192.6 V (83.74%) | 37.4 V | 317.7 V (138.13%) | 8667.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 128.4 V (55.83%) | 101.6 V | 211.8 V (92.09%) | 5778.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 77.04 V (33.5%) | 153.0 V | 127.08 V (55.25%) | 3466.8 W | Drop High |
| 16 mm² | 76 A | 59 A | 48.15 V (20.93%) | 181.9 V | 79.42 V (34.53%) | 2166.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 30.82 V (13.4%) | 199.2 V | 50.83 V (22.1%) | 1386.7 W | Drop High |
| 35 mm² | 125 A | 97 A | 22.01 V (9.57%) | 208.0 V | 36.31 V (15.79%) | 990.5 W | Drop High |
| 50 mm² | 151 A | 118 A | 15.41 V (6.7%) | 214.6 V | 25.42 V (11.05%) | 693.4 W | Drop High |
| 70 mm² | 192 A | 150 A | 11.01 V (4.79%) | 219.0 V | 18.15 V (7.89%) | 495.3 W | ~ ≤5% |
| 95 mm² | 232 A | 181 A | 8.11 V (3.53%) | 221.9 V | 13.38 V (5.82%) | 364.9 W | ~ ≤5% |
| 120 mm² | 269 A | 210 A | 6.42 V (2.79%) | 223.6 V | 10.59 V (4.6%) | 288.9 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 5.14 V (2.23%) | 224.9 V | 8.47 V (3.68%) | 231.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 4.16 V (1.81%) | 225.8 V | 6.87 V (2.99%) | 187.4 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 3.21 V (1.4%) | 226.8 V | 5.29 V (2.3%) | 144.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 2.57 V (1.12%) | 227.4 V | 4.24 V (1.84%) | 115.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 1.93 V (0.84%) | 228.1 V | 3.18 V (1.38%) | 86.7 W | ✓ OK (≤3%) |
FAQ — 45 Amp Cable Size at 400 Meters (230V Single-Phase (IEC Europe / UK / AU))
What mm² cable size is required for 45A at 400 meters (230V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 120 mm² copper cable for 45A over 400m at 230V (voltage drop: 6.42V or 2.79%).
What is the power capacity of 45A at 230V?
At unity power factor, 45A at 230V supports 10.35 kW with a standard 45A circuit breaker.
Related Lengths & Currents (230V)
45A · 5m (230V)45A · 10m (230V)45A · 15m (230V)45A · 20m (230V)45A · 25m (230V)45A · 30m (230V)45A · 35m (230V)45A · 40m (230V)45A · 45m (230V)45A · 50m (230V)45A · 60m (230V)45A · 70m (230V)10A · 400m (230V)16A · 400m (230V)20A · 400m (230V)25A · 400m (230V)32A · 400m (230V)40A · 400m (230V)50A · 400m (230V)63A · 400m (230V)80A · 400m (230V)100A · 400m (230V)125A · 400m (230V)160A · 400m (230V)200A · 400m (230V)