⚡ 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

900 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 900 A over 400 m (1312.3 ft).

Copper Cable (≤3% Drop)6× 400 mm²Drop: 6.42V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 63.54V (27.63%)
Voltage at Load223.6 VLine Loss: 5778.0 W
Max Power & Breaker207.0 kW1000A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 900A at 400m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A10272.0 V (4466.09%)0.0 V16944.0 V (7366.96%)9244800.0 WDrop High
2.5 mm²24 A18 A6163.2 V (2679.65%)0.0 V10166.4 V (4420.17%)5546880.0 WDrop High
4 mm²32 A25 A3852.0 V (1674.78%)0.0 V6354.0 V (2762.61%)3466800.0 WDrop High
6 mm²41 A32 A2568.0 V (1116.52%)0.0 V4236.0 V (1841.74%)2311200.0 WDrop High
10 mm²57 A44 A1540.8 V (669.91%)0.0 V2541.6 V (1105.04%)1386720.0 WDrop High
16 mm²76 A59 A963.0 V (418.7%)0.0 V1588.5 V (690.65%)866700.0 WDrop High
25 mm²101 A78 A616.32 V (267.97%)0.0 V1016.64 V (442.02%)554688.0 WDrop High
35 mm²125 A97 A440.23 V (191.4%)0.0 V726.17 V (315.73%)396205.7 WDrop High
50 mm²151 A118 A308.16 V (133.98%)0.0 V508.32 V (221.01%)277344.0 WDrop High
70 mm²192 A150 A220.11 V (95.7%)9.9 V363.09 V (157.86%)198102.9 WDrop High
95 mm²232 A181 A162.19 V (70.52%)67.8 V267.54 V (116.32%)145970.5 WDrop High
120 mm²269 A210 A128.4 V (55.83%)101.6 V211.8 V (92.09%)115560.0 WDrop High
150 mm²309 A241 A102.72 V (44.66%)127.3 V169.44 V (73.67%)92448.0 WDrop High
185 mm²353 A275 A83.29 V (36.21%)146.7 V137.38 V (59.73%)74957.8 WDrop High
240 mm²415 A324 A64.2 V (27.91%)165.8 V105.9 V (46.04%)57780.0 WDrop High
300 mm²477 A372 A51.36 V (22.33%)178.6 V84.72 V (36.83%)46224.0 WDrop High
400 mm²570 A445 A38.52 V (16.75%)191.5 V63.54 V (27.63%)34668.0 WDrop High

FAQ — 900 Amp Cable Size at 400 Meters (230V Single-Phase (IEC Europe / UK / AU))

What mm² cable size is required for 900A at 400 meters (230V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 6× 400 mm² copper cable for 900A over 400m at 230V (voltage drop: 6.42V or 2.79%).

What is the power capacity of 900A at 230V?

At unity power factor, 900A at 230V supports 207.0 kW with a standard 1000A circuit breaker.