⚡ 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 425 Ampere ved 20 Meter (230V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 425 A over 20 m ved 230V.

Copper Cable (≤3% Drop)300 mm²Drop: 1.21V (0.53%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.5V (0.65%)
Voltage at Load228.8 VLine Loss: 515.4 W
Max Power & Breaker97.75 kW450A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 20m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A242.53 V (105.45%)0.0 V400.07 V (173.94%)103076.7 WDrop High
2.5 mm²24 A18 A145.52 V (63.27%)84.5 V240.04 V (104.37%)61846.0 WDrop High
4 mm²32 A25 A90.95 V (39.54%)139.1 V150.03 V (65.23%)38653.8 WDrop High
6 mm²41 A32 A60.63 V (26.36%)169.4 V100.02 V (43.49%)25769.2 WDrop High
10 mm²57 A44 A36.38 V (15.82%)193.6 V60.01 V (26.09%)15461.5 WDrop High
16 mm²76 A59 A22.74 V (9.89%)207.3 V37.51 V (16.31%)9663.4 WDrop High
25 mm²101 A78 A14.55 V (6.33%)215.4 V24.0 V (10.44%)6184.6 WDrop High
35 mm²125 A97 A10.39 V (4.52%)219.6 V17.15 V (7.45%)4417.6 WDrop High
50 mm²151 A118 A7.28 V (3.16%)222.7 V12.0 V (5.22%)3092.3 WDrop High
70 mm²192 A150 A5.2 V (2.26%)224.8 V8.57 V (3.73%)2208.8 WDrop High
95 mm²232 A181 A3.83 V (1.66%)226.2 V6.32 V (2.75%)1627.5 WDrop High
120 mm²269 A210 A3.03 V (1.32%)227.0 V5.0 V (2.17%)1288.5 WDrop High
150 mm²309 A241 A2.43 V (1.05%)227.6 V4.0 V (1.74%)1030.8 WDrop High
185 mm²353 A275 A1.97 V (0.85%)228.0 V3.24 V (1.41%)835.8 WDrop High
240 mm²415 A324 A1.52 V (0.66%)228.5 V2.5 V (1.09%)644.2 WDrop High
300 mm²477 A372 A1.21 V (0.53%)228.8 V2.0 V (0.87%)515.4 W✓ OK (≤3%)
400 mm²570 A445 A0.91 V (0.4%)229.1 V1.5 V (0.65%)386.5 W✓ OK (≤3%)

FAQ — Kabeltværsnit for 425 Ampere ved 20 Meter (230V)

Hvilket kabeltværsnit kræves til 425A ved 20 meter (230V)?

Til 425 Ampere over 20 meter ved 230V anbefales 300 mm² kobberkabel (spændingsfald 1.21V / 0.53%).

Hvor mange kW svarer 425A ved 230V til?

Det svarer til 97.75 kW med en anbefalet sikring på 450A.