⚡ Cu ρ (75°C): 0.0214 Ω·mm²/m 🔌 NEC / IEC Standards: NFPA 70 & IEC 60364 🇺🇸 US Grid Avg: $0.175/kWh 🇩🇪 DE Grid Avg: €0.345/kWh 🇸🇪 SE Elpris: 1.54 SEK/kWh 🇳🇴 NO Strøm: 1.17 NOK/kWh 🔩 Copper Ref: $9,650/t (2026-10-24)
⚡ IEC 60364-5-52 · DIN VDE · NEK 400 · SS 436 40 00

375 Amp Cable Size at 175 Meters (415V Three-Phase (UK / Australia Industrial))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 375 A over 175 m (574.1 ft).

Copper Cable (≤3% Drop)240 mm²Drop: 10.14V (2.44%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 10.03V (2.42%)
Voltage at Load404.9 VLine Loss: 6583.0 W
Max Power & Breaker269.55 kW400A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A at 175m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1621.63 V (390.75%)0.0 V2674.94 V (644.56%)1053281.2 WDrop High
2.5 mm²24 A18 A972.98 V (234.45%)0.0 V1604.96 V (386.74%)631968.7 WDrop High
4 mm²32 A25 A608.11 V (146.53%)0.0 V1003.1 V (241.71%)394980.5 WDrop High
6 mm²41 A32 A405.41 V (97.69%)9.6 V668.73 V (161.14%)263320.3 WDrop High
10 mm²57 A44 A243.24 V (58.61%)171.8 V401.24 V (96.68%)157992.2 WDrop High
16 mm²76 A59 A152.03 V (36.63%)263.0 V250.78 V (60.43%)98745.1 WDrop High
25 mm²101 A78 A97.3 V (23.45%)317.7 V160.5 V (38.67%)63196.9 WDrop High
35 mm²125 A97 A69.5 V (16.75%)345.5 V114.64 V (27.62%)45140.6 WDrop High
50 mm²151 A118 A48.65 V (11.72%)366.4 V80.25 V (19.34%)31598.4 WDrop High
70 mm²192 A150 A34.75 V (8.37%)380.3 V57.32 V (13.81%)22570.3 WDrop High
95 mm²232 A181 A25.6 V (6.17%)389.4 V42.24 V (10.18%)16630.8 WDrop High
120 mm²269 A210 A20.27 V (4.88%)394.7 V33.44 V (8.06%)13166.0 WDrop High
150 mm²309 A241 A16.22 V (3.91%)398.8 V26.75 V (6.45%)10532.8 WDrop High
185 mm²353 A275 A13.15 V (3.17%)401.9 V21.69 V (5.23%)8540.1 WDrop High
240 mm²415 A324 A10.14 V (2.44%)404.9 V16.72 V (4.03%)6583.0 W✓ OK (≤3%)
300 mm²477 A372 A8.11 V (1.95%)406.9 V13.37 V (3.22%)5266.4 W✓ OK (≤3%)
400 mm²570 A445 A6.08 V (1.47%)408.9 V10.03 V (2.42%)3949.8 W✓ OK (≤3%)

FAQ — 375 Amp Cable Size at 175 Meters (415V Three-Phase (UK / Australia Industrial))

What mm² cable size is required for 375A at 175 meters (415V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 375A over 175m at 415V (voltage drop: 10.14V or 2.44%).

What is the power capacity of 375A at 415V?

At unity power factor, 375A at 415V supports 269.55 kW with a standard 400A circuit breaker.