325 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 325 A over 5 m (16.4 ft).
Copper Cable (≤3% Drop)185 mm²Drop: 0.38V (1.57%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 0.38V (1.59%)
Voltage at Load23.6 VLine Loss: 122.2 W
Max Power & Breaker7.8 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 325A at 5m
| 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 | 46.37 V (193.19%) | 0.0 V | 76.48 V (318.68%) | 15069.2 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 27.82 V (115.92%) | 0.0 V | 45.89 V (191.21%) | 9041.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 17.39 V (72.45%) | 6.6 V | 28.68 V (119.51%) | 5650.9 W | Drop High |
| 6 mm² | 41 A | 32 A | 11.59 V (48.3%) | 12.4 V | 19.12 V (79.67%) | 3767.3 W | Drop High |
| 10 mm² | 57 A | 44 A | 6.96 V (28.98%) | 17.0 V | 11.47 V (47.8%) | 2260.4 W | Drop High |
| 16 mm² | 76 A | 59 A | 4.35 V (18.11%) | 19.7 V | 7.17 V (29.88%) | 1412.7 W | Drop High |
| 25 mm² | 101 A | 78 A | 2.78 V (11.59%) | 21.2 V | 4.59 V (19.12%) | 904.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 1.99 V (8.28%) | 22.0 V | 3.28 V (13.66%) | 645.8 W | Drop High |
| 50 mm² | 151 A | 118 A | 1.39 V (5.8%) | 22.6 V | 2.29 V (9.56%) | 452.1 W | Drop High |
| 70 mm² | 192 A | 150 A | 0.99 V (4.14%) | 23.0 V | 1.64 V (6.83%) | 322.9 W | Drop High |
| 95 mm² | 232 A | 181 A | 0.73 V (3.05%) | 23.3 V | 1.21 V (5.03%) | 237.9 W | Drop High |
| 120 mm² | 269 A | 210 A | 0.58 V (2.41%) | 23.4 V | 0.96 V (3.98%) | 188.4 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.46 V (1.93%) | 23.5 V | 0.76 V (3.19%) | 150.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 0.38 V (1.57%) | 23.6 V | 0.62 V (2.58%) | 122.2 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.29 V (1.21%) | 23.7 V | 0.48 V (1.99%) | 94.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.23 V (0.97%) | 23.8 V | 0.38 V (1.59%) | 75.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.17 V (0.72%) | 23.8 V | 0.29 V (1.2%) | 56.5 W | ✓ OK (≤3%) |
FAQ — 325 Amp Cable Size at 5 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 325A at 5 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 325A over 5m at 24V (voltage drop: 0.38V or 1.57%).
What is the power capacity of 325A at 24V?
At unity power factor, 325A at 24V supports 7.8 kW with a standard 350A circuit breaker.
Related Lengths & Currents (24V)
325A · 10m (24V)325A · 15m (24V)325A · 20m (24V)325A · 25m (24V)325A · 30m (24V)325A · 35m (24V)325A · 40m (24V)325A · 45m (24V)325A · 50m (24V)325A · 60m (24V)325A · 70m (24V)10A · 5m (24V)16A · 5m (24V)20A · 5m (24V)25A · 5m (24V)32A · 5m (24V)40A · 5m (24V)50A · 5m (24V)63A · 5m (24V)80A · 5m (24V)100A · 5m (24V)125A · 5m (24V)160A · 5m (24V)200A · 5m (24V)