⚡ 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 25 Ampere ved 350 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 25 A over 350 m ved 400V.

Copper Cable (≤3% Drop)35 mm²Drop: 9.27V (2.32%)
Aluminum Cable (≤3% Drop)50 mm²Drop: 10.7V (2.67%)
Voltage at Load390.7 VLine Loss: 401.2 W
Max Power & Breaker17.32 kW25A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 25A at 350m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A216.22 V (54.05%)183.8 V356.66 V (89.16%)9362.5 WDrop High
2.5 mm²24 A18 A129.73 V (32.43%)270.3 V213.99 V (53.5%)5617.5 WDrop High
4 mm²32 A25 A81.08 V (20.27%)318.9 V133.75 V (33.44%)3510.9 WDrop High
6 mm²41 A32 A54.05 V (13.51%)345.9 V89.16 V (22.29%)2340.6 WDrop High
10 mm²57 A44 A32.43 V (8.11%)367.6 V53.5 V (13.37%)1404.4 WDrop High
16 mm²76 A59 A20.27 V (5.07%)379.7 V33.44 V (8.36%)877.7 WDrop High
25 mm²101 A78 A12.97 V (3.24%)387.0 V21.4 V (5.35%)561.8 W~ ≤5%
35 mm²125 A97 A9.27 V (2.32%)390.7 V15.29 V (3.82%)401.2 W✓ OK (≤3%)
50 mm²151 A118 A6.49 V (1.62%)393.5 V10.7 V (2.67%)280.9 W✓ OK (≤3%)
70 mm²192 A150 A4.63 V (1.16%)395.4 V7.64 V (1.91%)200.6 W✓ OK (≤3%)
95 mm²232 A181 A3.41 V (0.85%)396.6 V5.63 V (1.41%)147.8 W✓ OK (≤3%)
120 mm²269 A210 A2.7 V (0.68%)397.3 V4.46 V (1.11%)117.0 W✓ OK (≤3%)
150 mm²309 A241 A2.16 V (0.54%)397.8 V3.57 V (0.89%)93.6 W✓ OK (≤3%)
185 mm²353 A275 A1.75 V (0.44%)398.2 V2.89 V (0.72%)75.9 W✓ OK (≤3%)
240 mm²415 A324 A1.35 V (0.34%)398.6 V2.23 V (0.56%)58.5 W✓ OK (≤3%)
300 mm²477 A372 A1.08 V (0.27%)398.9 V1.78 V (0.45%)46.8 W✓ OK (≤3%)
400 mm²570 A445 A0.81 V (0.2%)399.2 V1.34 V (0.33%)35.1 W✓ OK (≤3%)

FAQ — Kabeltværsnit for 25 Ampere ved 350 Meter (400V)

Hvilket kabeltværsnit kræves til 25A ved 350 meter (400V)?

Til 25 Ampere over 350 meter ved 400V anbefales 35 mm² kobberkabel (spændingsfald 9.27V / 2.32%).

Hvor mange kW svarer 25A ved 400V til?

Det svarer til 17.32 kW med en anbefalet sikring på 25A.