⚡ 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 325 Ampere ved 20 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 325 A over 20 m ved 400V.

Copper Cable (≤3% Drop)185 mm²Drop: 1.3V (0.33%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 1.32V (0.33%)
Voltage at Load398.7 VLine Loss: 733.1 W
Max Power & Breaker225.17 kW350A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 20m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A160.62 V (40.15%)239.4 V264.95 V (66.24%)90415.0 WDrop High
2.5 mm²24 A18 A96.37 V (24.09%)303.6 V158.97 V (39.74%)54249.0 WDrop High
4 mm²32 A25 A60.23 V (15.06%)339.8 V99.35 V (24.84%)33905.6 WDrop High
6 mm²41 A32 A40.15 V (10.04%)359.8 V66.24 V (16.56%)22603.8 WDrop High
10 mm²57 A44 A24.09 V (6.02%)375.9 V39.74 V (9.94%)13562.2 WDrop High
16 mm²76 A59 A15.06 V (3.76%)384.9 V24.84 V (6.21%)8476.4 WDrop High
25 mm²101 A78 A9.64 V (2.41%)390.4 V15.9 V (3.97%)5424.9 WDrop High
35 mm²125 A97 A6.88 V (1.72%)393.1 V11.35 V (2.84%)3874.9 WDrop High
50 mm²151 A118 A4.82 V (1.2%)395.2 V7.95 V (1.99%)2712.4 WDrop High
70 mm²192 A150 A3.44 V (0.86%)396.6 V5.68 V (1.42%)1937.5 WDrop High
95 mm²232 A181 A2.54 V (0.63%)397.5 V4.18 V (1.05%)1427.6 WDrop High
120 mm²269 A210 A2.01 V (0.5%)398.0 V3.31 V (0.83%)1130.2 WDrop High
150 mm²309 A241 A1.61 V (0.4%)398.4 V2.65 V (0.66%)904.1 WDrop High
185 mm²353 A275 A1.3 V (0.33%)398.7 V2.15 V (0.54%)733.1 W✓ OK (≤3%)
240 mm²415 A324 A1.0 V (0.25%)399.0 V1.66 V (0.41%)565.1 W✓ OK (≤3%)
300 mm²477 A372 A0.8 V (0.2%)399.2 V1.32 V (0.33%)452.1 W✓ OK (≤3%)
400 mm²570 A445 A0.6 V (0.15%)399.4 V0.99 V (0.25%)339.1 W✓ OK (≤3%)

FAQ — Kabeltværsnit for 325 Ampere ved 20 Meter (400V)

Hvilket kabeltværsnit kræves til 325A ved 20 meter (400V)?

Til 325 Ampere over 20 meter ved 400V anbefales 185 mm² kobberkabel (spændingsfald 1.3V / 0.33%).

Hvor mange kW svarer 325A ved 400V til?

Det svarer til 225.17 kW med en anbefalet sikring på 350A.