⚡ 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

63 Amp Cable Size at 10 Meters (24V DC (Off-Grid Solar / Industrial Control))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 63 A over 10 m (32.8 ft).

Copper Cable (≤3% Drop)50 mm²Drop: 0.54V (2.25%)
Aluminum Cable (≤3% Drop)70 mm²Drop: 0.64V (2.65%)
Voltage at Load23.5 VLine Loss: 34.0 W
Max Power & Breaker1.51 kW63A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 63A at 10m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A17.98 V (74.9%)6.0 V29.65 V (123.55%)1132.5 WDrop High
2.5 mm²24 A18 A10.79 V (44.94%)13.2 V17.79 V (74.13%)679.5 WDrop High
4 mm²32 A25 A6.74 V (28.09%)17.3 V11.12 V (46.33%)424.7 WDrop High
6 mm²41 A32 A4.49 V (18.73%)19.5 V7.41 V (30.89%)283.1 WDrop High
10 mm²57 A44 A2.7 V (11.23%)21.3 V4.45 V (18.53%)169.9 WDrop High
16 mm²76 A59 A1.69 V (7.02%)22.3 V2.78 V (11.58%)106.2 WDrop High
25 mm²101 A78 A1.08 V (4.49%)22.9 V1.78 V (7.41%)67.9 W~ ≤5%
35 mm²125 A97 A0.77 V (3.21%)23.2 V1.27 V (5.29%)48.5 W~ ≤5%
50 mm²151 A118 A0.54 V (2.25%)23.5 V0.89 V (3.71%)34.0 W✓ OK (≤3%)
70 mm²192 A150 A0.39 V (1.6%)23.6 V0.64 V (2.65%)24.3 W✓ OK (≤3%)
95 mm²232 A181 A0.28 V (1.18%)23.7 V0.47 V (1.95%)17.9 W✓ OK (≤3%)
120 mm²269 A210 A0.22 V (0.94%)23.8 V0.37 V (1.54%)14.2 W✓ OK (≤3%)
150 mm²309 A241 A0.18 V (0.75%)23.8 V0.3 V (1.24%)11.3 W✓ OK (≤3%)
185 mm²353 A275 A0.15 V (0.61%)23.9 V0.24 V (1.0%)9.2 W✓ OK (≤3%)
240 mm²415 A324 A0.11 V (0.47%)23.9 V0.19 V (0.77%)7.1 W✓ OK (≤3%)
300 mm²477 A372 A0.09 V (0.37%)23.9 V0.15 V (0.62%)5.7 W✓ OK (≤3%)
400 mm²570 A445 A0.07 V (0.28%)23.9 V0.11 V (0.46%)4.2 W✓ OK (≤3%)

FAQ — 63 Amp Cable Size at 10 Meters (24V DC (Off-Grid Solar / Industrial Control))

What mm² cable size is required for 63A at 10 meters (24V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 50 mm² copper cable for 63A over 10m at 24V (voltage drop: 0.54V or 2.25%).

What is the power capacity of 63A at 24V?

At unity power factor, 63A at 24V supports 1.51 kW with a standard 63A circuit breaker.