350 Amp Cable Size at 350 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 350 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)19× 400 mm²Drop: 0.69V (2.87%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 21.62V (90.09%)
Voltage at Load23.3 VLine Loss: 241.5 W
Max Power & Breaker8.4 kW350A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 350A at 350m
| 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 | 3495.33 V (14563.89%) | 0.0 V | 5765.67 V (24023.61%) | 1223366.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2097.2 V (8738.33%) | 0.0 V | 3459.4 V (14414.17%) | 734020.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1310.75 V (5461.46%) | 0.0 V | 2162.12 V (9008.85%) | 458762.5 W | Drop High |
| 6 mm² | 41 A | 32 A | 873.83 V (3640.97%) | 0.0 V | 1441.42 V (6005.9%) | 305841.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 524.3 V (2184.58%) | 0.0 V | 864.85 V (3603.54%) | 183505.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 327.69 V (1365.36%) | 0.0 V | 540.53 V (2252.21%) | 114690.6 W | Drop High |
| 25 mm² | 101 A | 78 A | 209.72 V (873.83%) | 0.0 V | 345.94 V (1441.42%) | 73402.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 149.8 V (624.17%) | 0.0 V | 247.1 V (1029.58%) | 52430.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 104.86 V (436.92%) | 0.0 V | 172.97 V (720.71%) | 36701.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 74.9 V (312.08%) | 0.0 V | 123.55 V (514.79%) | 26215.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 55.19 V (229.96%) | 0.0 V | 91.04 V (379.32%) | 19316.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 43.69 V (182.05%) | 0.0 V | 72.07 V (300.3%) | 15292.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 34.95 V (145.64%) | 0.0 V | 57.66 V (240.24%) | 12233.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 28.34 V (118.09%) | 0.0 V | 46.75 V (194.79%) | 9919.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 21.85 V (91.02%) | 2.2 V | 36.04 V (150.15%) | 7646.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 17.48 V (72.82%) | 6.5 V | 28.83 V (120.12%) | 6116.8 W | Drop High |
| 400 mm² | 570 A | 445 A | 13.11 V (54.61%) | 10.9 V | 21.62 V (90.09%) | 4587.6 W | Drop High |
FAQ — 350 Amp Cable Size at 350 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 350A at 350 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 19× 400 mm² copper cable for 350A over 350m at 24V (voltage drop: 0.69V or 2.87%).
What is the power capacity of 350A at 24V?
At unity power factor, 350A at 24V supports 8.4 kW with a standard 350A circuit breaker.
Related Lengths & Currents (24V)
350A · 5m (24V)350A · 10m (24V)350A · 15m (24V)350A · 20m (24V)350A · 25m (24V)350A · 30m (24V)350A · 35m (24V)350A · 40m (24V)350A · 45m (24V)350A · 50m (24V)350A · 60m (24V)350A · 70m (24V)10A · 350m (24V)16A · 350m (24V)20A · 350m (24V)25A · 350m (24V)32A · 350m (24V)40A · 350m (24V)50A · 350m (24V)63A · 350m (24V)80A · 350m (24V)100A · 350m (24V)125A · 350m (24V)160A · 350m (24V)200A · 350m (24V)