225 Amp Cable Size at 15 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 225 A over 15 m (49.2 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 0.6V (2.51%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 0.6V (2.48%)
Voltage at Load23.4 VLine Loss: 135.4 W
Max Power & Breaker5.4 kW225A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 225A at 15m
| 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 | 96.3 V (401.25%) | 0.0 V | 158.85 V (661.88%) | 21667.5 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 57.78 V (240.75%) | 0.0 V | 95.31 V (397.12%) | 13000.5 W | Drop High |
| 4 mm² | 32 A | 25 A | 36.11 V (150.47%) | 0.0 V | 59.57 V (248.2%) | 8125.3 W | Drop High |
| 6 mm² | 41 A | 32 A | 24.07 V (100.31%) | 0.0 V | 39.71 V (165.47%) | 5416.9 W | Drop High |
| 10 mm² | 57 A | 44 A | 14.45 V (60.19%) | 9.6 V | 23.83 V (99.28%) | 3250.1 W | Drop High |
| 16 mm² | 76 A | 59 A | 9.03 V (37.62%) | 15.0 V | 14.89 V (62.05%) | 2031.3 W | Drop High |
| 25 mm² | 101 A | 78 A | 5.78 V (24.08%) | 18.2 V | 9.53 V (39.71%) | 1300.1 W | Drop High |
| 35 mm² | 125 A | 97 A | 4.13 V (17.2%) | 19.9 V | 6.81 V (28.37%) | 928.6 W | Drop High |
| 50 mm² | 151 A | 118 A | 2.89 V (12.04%) | 21.1 V | 4.77 V (19.86%) | 650.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 2.06 V (8.6%) | 21.9 V | 3.4 V (14.18%) | 464.3 W | Drop High |
| 95 mm² | 232 A | 181 A | 1.52 V (6.34%) | 22.5 V | 2.51 V (10.45%) | 342.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 1.2 V (5.02%) | 22.8 V | 1.99 V (8.27%) | 270.8 W | Drop High |
| 150 mm² | 309 A | 241 A | 0.96 V (4.01%) | 23.0 V | 1.59 V (6.62%) | 216.7 W | ~ ≤5% |
| 185 mm² | 353 A | 275 A | 0.78 V (3.25%) | 23.2 V | 1.29 V (5.37%) | 175.7 W | ~ ≤5% |
| 240 mm² | 415 A | 324 A | 0.6 V (2.51%) | 23.4 V | 0.99 V (4.14%) | 135.4 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.48 V (2.01%) | 23.5 V | 0.79 V (3.31%) | 108.3 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.36 V (1.5%) | 23.6 V | 0.6 V (2.48%) | 81.3 W | ✓ OK (≤3%) |
FAQ — 225 Amp Cable Size at 15 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 225A at 15 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 225A over 15m at 24V (voltage drop: 0.6V or 2.51%).
What is the power capacity of 225A at 24V?
At unity power factor, 225A at 24V supports 5.4 kW with a standard 225A circuit breaker.
Related Lengths & Currents (24V)
225A · 5m (24V)225A · 10m (24V)225A · 20m (24V)225A · 25m (24V)225A · 30m (24V)225A · 35m (24V)225A · 40m (24V)225A · 45m (24V)225A · 50m (24V)225A · 60m (24V)225A · 70m (24V)10A · 15m (24V)16A · 15m (24V)20A · 15m (24V)25A · 15m (24V)32A · 15m (24V)40A · 15m (24V)50A · 15m (24V)63A · 15m (24V)80A · 15m (24V)100A · 15m (24V)125A · 15m (24V)160A · 15m (24V)200A · 15m (24V)