⚡ 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

1000 Amp Cable Size at 400 Meters (400V Three-Phase (IEC European Grid))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 1000 A over 400 m (1312.3 ft).

Copper Cable (≤3% Drop)4× 400 mm²Drop: 9.27V (2.32%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 61.14V (15.29%)
Voltage at Load390.7 VLine Loss: 16050.0 W
Max Power & Breaker692.82 kW1000A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 1000A at 400m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A9884.24 V (2471.06%)0.0 V16304.37 V (4076.09%)17120000.0 WDrop High
2.5 mm²24 A18 A5930.54 V (1482.64%)0.0 V9782.62 V (2445.66%)10272000.0 WDrop High
4 mm²32 A25 A3706.59 V (926.65%)0.0 V6114.14 V (1528.53%)6420000.0 WDrop High
6 mm²41 A32 A2471.06 V (617.76%)0.0 V4076.09 V (1019.02%)4280000.0 WDrop High
10 mm²57 A44 A1482.64 V (370.66%)0.0 V2445.66 V (611.41%)2568000.0 WDrop High
16 mm²76 A59 A926.65 V (231.66%)0.0 V1528.53 V (382.13%)1605000.0 WDrop High
25 mm²101 A78 A593.05 V (148.26%)0.0 V978.26 V (244.57%)1027200.0 WDrop High
35 mm²125 A97 A423.61 V (105.9%)0.0 V698.76 V (174.69%)733714.3 WDrop High
50 mm²151 A118 A296.53 V (74.13%)103.5 V489.13 V (122.28%)513600.0 WDrop High
70 mm²192 A150 A211.81 V (52.95%)188.2 V349.38 V (87.34%)366857.1 WDrop High
95 mm²232 A181 A156.07 V (39.02%)243.9 V257.44 V (64.36%)270315.8 WDrop High
120 mm²269 A210 A123.55 V (30.89%)276.4 V203.8 V (50.95%)214000.0 WDrop High
150 mm²309 A241 A98.84 V (24.71%)301.2 V163.04 V (40.76%)171200.0 WDrop High
185 mm²353 A275 A80.14 V (20.04%)319.9 V132.2 V (33.05%)138810.8 WDrop High
240 mm²415 A324 A61.78 V (15.44%)338.2 V101.9 V (25.48%)107000.0 WDrop High
300 mm²477 A372 A49.42 V (12.36%)350.6 V81.52 V (20.38%)85600.0 WDrop High
400 mm²570 A445 A37.07 V (9.27%)362.9 V61.14 V (15.29%)64200.0 WDrop High

FAQ — 1000 Amp Cable Size at 400 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 1000A at 400 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4× 400 mm² copper cable for 1000A over 400m at 400V (voltage drop: 9.27V or 2.32%).

What is the power capacity of 1000A at 400V?

At unity power factor, 1000A at 400V supports 692.82 kW with a standard 1000A circuit breaker.