⚡ 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

Kabeltværsnit for 300 Ampere ved 70 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 300 A over 70 m ved 400V.

Copper Cable (≤3% Drop)150 mm²Drop: 5.19V (1.3%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 5.35V (1.34%)
Voltage at Load394.8 VLine Loss: 2696.4 W
Max Power & Breaker207.85 kW300A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 70m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A518.92 V (129.73%)0.0 V855.98 V (213.99%)269640.0 WDrop High
2.5 mm²24 A18 A311.35 V (77.84%)88.6 V513.59 V (128.4%)161784.0 WDrop High
4 mm²32 A25 A194.6 V (48.65%)205.4 V320.99 V (80.25%)101115.0 WDrop High
6 mm²41 A32 A129.73 V (32.43%)270.3 V213.99 V (53.5%)67410.0 WDrop High
10 mm²57 A44 A77.84 V (19.46%)322.2 V128.4 V (32.1%)40446.0 WDrop High
16 mm²76 A59 A48.65 V (12.16%)351.4 V80.25 V (20.06%)25278.8 WDrop High
25 mm²101 A78 A31.14 V (7.78%)368.9 V51.36 V (12.84%)16178.4 WDrop High
35 mm²125 A97 A22.24 V (5.56%)377.8 V36.68 V (9.17%)11556.0 WDrop High
50 mm²151 A118 A15.57 V (3.89%)384.4 V25.68 V (6.42%)8089.2 WDrop High
70 mm²192 A150 A11.12 V (2.78%)388.9 V18.34 V (4.59%)5778.0 WDrop High
95 mm²232 A181 A8.19 V (2.05%)391.8 V13.52 V (3.38%)4257.5 WDrop High
120 mm²269 A210 A6.49 V (1.62%)393.5 V10.7 V (2.67%)3370.5 WDrop High
150 mm²309 A241 A5.19 V (1.3%)394.8 V8.56 V (2.14%)2696.4 W✓ OK (≤3%)
185 mm²353 A275 A4.21 V (1.05%)395.8 V6.94 V (1.74%)2186.3 W✓ OK (≤3%)
240 mm²415 A324 A3.24 V (0.81%)396.8 V5.35 V (1.34%)1685.2 W✓ OK (≤3%)
300 mm²477 A372 A2.59 V (0.65%)397.4 V4.28 V (1.07%)1348.2 W✓ OK (≤3%)
400 mm²570 A445 A1.95 V (0.49%)398.1 V3.21 V (0.8%)1011.1 W✓ OK (≤3%)

FAQ — Kabeltværsnit for 300 Ampere ved 70 Meter (400V)

Hvilket kabeltværsnit kræves til 300A ved 70 meter (400V)?

Til 300 Ampere over 70 meter ved 400V anbefales 150 mm² kobberkabel (spændingsfald 5.19V / 1.3%).

Hvor mange kW svarer 300A ved 400V til?

Det svarer til 207.85 kW med en anbefalet sikring på 300A.