⚡ 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

475 Amp Cable Size at 5 Meters (24V DC (Off-Grid Solar / Industrial Control))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 475 A over 5 m (16.4 ft).

Copper Cable (≤3% Drop)300 mm²Drop: 0.34V (1.41%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 0.42V (1.75%)
Voltage at Load23.7 VLine Loss: 160.9 W
Max Power & Breaker11.4 kW500A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 475A at 5m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A67.77 V (282.36%)0.0 V111.78 V (465.76%)32189.2 WDrop High
2.5 mm²24 A18 A40.66 V (169.42%)0.0 V67.07 V (279.46%)19313.5 WDrop High
4 mm²32 A25 A25.41 V (105.89%)0.0 V41.92 V (174.66%)12070.9 WDrop High
6 mm²41 A32 A16.94 V (70.59%)7.1 V27.95 V (116.44%)8047.3 WDrop High
10 mm²57 A44 A10.16 V (42.35%)13.8 V16.77 V (69.86%)4828.4 WDrop High
16 mm²76 A59 A6.35 V (26.47%)17.6 V10.48 V (43.67%)3017.7 WDrop High
25 mm²101 A78 A4.07 V (16.94%)19.9 V6.71 V (27.95%)1931.3 WDrop High
35 mm²125 A97 A2.9 V (12.1%)21.1 V4.79 V (19.96%)1379.5 WDrop High
50 mm²151 A118 A2.03 V (8.47%)22.0 V3.35 V (13.97%)965.7 WDrop High
70 mm²192 A150 A1.45 V (6.05%)22.5 V2.4 V (9.98%)689.8 WDrop High
95 mm²232 A181 A1.07 V (4.46%)22.9 V1.76 V (7.35%)508.2 WDrop High
120 mm²269 A210 A0.85 V (3.53%)23.2 V1.4 V (5.82%)402.4 WDrop High
150 mm²309 A241 A0.68 V (2.82%)23.3 V1.12 V (4.66%)321.9 WDrop High
185 mm²353 A275 A0.55 V (2.29%)23.5 V0.91 V (3.78%)261.0 WDrop High
240 mm²415 A324 A0.42 V (1.76%)23.6 V0.7 V (2.91%)201.2 WDrop High
300 mm²477 A372 A0.34 V (1.41%)23.7 V0.56 V (2.33%)160.9 W✓ OK (≤3%)
400 mm²570 A445 A0.25 V (1.06%)23.7 V0.42 V (1.75%)120.7 W✓ OK (≤3%)

FAQ — 475 Amp Cable Size at 5 Meters (24V DC (Off-Grid Solar / Industrial Control))

What mm² cable size is required for 475A at 5 meters (24V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 300 mm² copper cable for 475A over 5m at 24V (voltage drop: 0.34V or 1.41%).

What is the power capacity of 475A at 24V?

At unity power factor, 475A at 24V supports 11.4 kW with a standard 500A circuit breaker.