⚡ 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 50 Meter (230V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 300 A over 50 m ved 230V.

Copper Cable (≤3% Drop)150 mm²Drop: 4.28V (1.86%)
Aluminum Cable (≤3% Drop)240 mm²Drop: 4.41V (1.92%)
Voltage at Load225.7 VLine Loss: 1284.0 W
Max Power & Breaker69.0 kW300A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 300A at 50m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A428.0 V (186.09%)0.0 V706.0 V (306.96%)128400.0 WDrop High
2.5 mm²24 A18 A256.8 V (111.65%)0.0 V423.6 V (184.17%)77040.0 WDrop High
4 mm²32 A25 A160.5 V (69.78%)69.5 V264.75 V (115.11%)48150.0 WDrop High
6 mm²41 A32 A107.0 V (46.52%)123.0 V176.5 V (76.74%)32100.0 WDrop High
10 mm²57 A44 A64.2 V (27.91%)165.8 V105.9 V (46.04%)19260.0 WDrop High
16 mm²76 A59 A40.12 V (17.45%)189.9 V66.19 V (28.78%)12037.5 WDrop High
25 mm²101 A78 A25.68 V (11.17%)204.3 V42.36 V (18.42%)7704.0 WDrop High
35 mm²125 A97 A18.34 V (7.98%)211.7 V30.26 V (13.16%)5502.9 WDrop High
50 mm²151 A118 A12.84 V (5.58%)217.2 V21.18 V (9.21%)3852.0 WDrop High
70 mm²192 A150 A9.17 V (3.99%)220.8 V15.13 V (6.58%)2751.4 WDrop High
95 mm²232 A181 A6.76 V (2.94%)223.2 V11.15 V (4.85%)2027.4 WDrop High
120 mm²269 A210 A5.35 V (2.33%)224.7 V8.82 V (3.84%)1605.0 WDrop High
150 mm²309 A241 A4.28 V (1.86%)225.7 V7.06 V (3.07%)1284.0 W✓ OK (≤3%)
185 mm²353 A275 A3.47 V (1.51%)226.5 V5.72 V (2.49%)1041.1 W✓ OK (≤3%)
240 mm²415 A324 A2.67 V (1.16%)227.3 V4.41 V (1.92%)802.5 W✓ OK (≤3%)
300 mm²477 A372 A2.14 V (0.93%)227.9 V3.53 V (1.53%)642.0 W✓ OK (≤3%)
400 mm²570 A445 A1.6 V (0.7%)228.4 V2.65 V (1.15%)481.5 W✓ OK (≤3%)

FAQ — Kabeltværsnit for 300 Ampere ved 50 Meter (230V)

Hvilket kabeltværsnit kræves til 300A ved 50 meter (230V)?

Til 300 Ampere over 50 meter ved 230V anbefales 150 mm² kobberkabel (spændingsfald 4.28V / 1.86%).

Hvor mange kW svarer 300A ved 230V til?

Det svarer til 69.0 kW med en anbefalet sikring på 300A.