⚡ IEC 60364-5-52 · DIN VDE · NEK 400 · SS 436 40 00

Kabeltværsnit for 20 Ampere ved 10 Meter (400V)

Beregning af kabeltværsnit (mm²), spændingsfald og sikringsstørrelse efter dansk standard DS/HD 60364 for 20 A over 10 m ved 400V.

Copper Cable (≤3% Drop)2.5 mm²Drop: 2.97V (0.74%)

Aluminum Cable (≤3% Drop)4 mm²Drop: 3.06V (0.76%)

Voltage at Load397.0 VLine Loss: 102.7 W

Max Power & Breaker13.86 kW20A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 20A at 10m

Cross-Section (mm²)	Cu Ampacity	Al Ampacity	Cu Voltage Drop	Load Voltage	Al Voltage Drop	Power Loss	Status
1.5 mm²	16 A	12 A	4.94 V (1.24%)	395.1 V	8.15 V (2.04%)	171.2 W	Drop High
2.5 mm²	24 A	18 A	2.97 V (0.74%)	397.0 V	4.89 V (1.22%)	102.7 W	✓ OK (≤3%)
4 mm²	32 A	25 A	1.85 V (0.46%)	398.1 V	3.06 V (0.76%)	64.2 W	✓ OK (≤3%)
6 mm²	41 A	32 A	1.24 V (0.31%)	398.8 V	2.04 V (0.51%)	42.8 W	✓ OK (≤3%)
10 mm²	57 A	44 A	0.74 V (0.19%)	399.3 V	1.22 V (0.31%)	25.7 W	✓ OK (≤3%)
16 mm²	76 A	59 A	0.46 V (0.12%)	399.5 V	0.76 V (0.19%)	16.1 W	✓ OK (≤3%)
25 mm²	101 A	78 A	0.3 V (0.07%)	399.7 V	0.49 V (0.12%)	10.3 W	✓ OK (≤3%)
35 mm²	125 A	97 A	0.21 V (0.05%)	399.8 V	0.35 V (0.09%)	7.3 W	✓ OK (≤3%)
50 mm²	151 A	118 A	0.15 V (0.04%)	399.9 V	0.24 V (0.06%)	5.1 W	✓ OK (≤3%)
70 mm²	192 A	150 A	0.11 V (0.03%)	399.9 V	0.17 V (0.04%)	3.7 W	✓ OK (≤3%)
95 mm²	232 A	181 A	0.08 V (0.02%)	399.9 V	0.13 V (0.03%)	2.7 W	✓ OK (≤3%)
120 mm²	269 A	210 A	0.06 V (0.02%)	399.9 V	0.1 V (0.03%)	2.1 W	✓ OK (≤3%)
150 mm²	309 A	241 A	0.05 V (0.01%)	400.0 V	0.08 V (0.02%)	1.7 W	✓ OK (≤3%)
185 mm²	353 A	275 A	0.04 V (0.01%)	400.0 V	0.07 V (0.02%)	1.4 W	✓ OK (≤3%)
240 mm²	415 A	324 A	0.03 V (0.01%)	400.0 V	0.05 V (0.01%)	1.1 W	✓ OK (≤3%)
300 mm²	477 A	372 A	0.02 V (0.01%)	400.0 V	0.04 V (0.01%)	0.9 W	✓ OK (≤3%)
400 mm²	570 A	445 A	0.02 V (0.0%)	400.0 V	0.03 V (0.01%)	0.6 W	✓ OK (≤3%)

Til 20 Ampere over 10 meter ved 400V anbefales 2.5 mm² kobberkabel (spændingsfald 2.97V / 0.74%).

Det svarer til 13.86 kW med en anbefalet sikring på 20A.