700 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 700 A over 350 m (1148.3 ft).
Copper Cable (≤3% Drop)37× 400 mm²Drop: 0.71V (2.95%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 43.24V (180.18%)
Voltage at Load23.3 VLine Loss: 496.0 W
Max Power & Breaker16.8 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 700A 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 | 6990.67 V (29127.78%) | 0.0 V | 11531.33 V (48047.22%) | 4893466.7 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 4194.4 V (17476.67%) | 0.0 V | 6918.8 V (28828.33%) | 2936080.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 2621.5 V (10922.92%) | 0.0 V | 4324.25 V (18017.71%) | 1835050.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 1747.67 V (7281.94%) | 0.0 V | 2882.83 V (12011.81%) | 1223366.7 W | Drop High |
| 10 mm² | 57 A | 44 A | 1048.6 V (4369.17%) | 0.0 V | 1729.7 V (7207.08%) | 734020.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 655.37 V (2730.73%) | 0.0 V | 1081.06 V (4504.43%) | 458762.5 W | Drop High |
| 25 mm² | 101 A | 78 A | 419.44 V (1747.67%) | 0.0 V | 691.88 V (2882.83%) | 293608.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 299.6 V (1248.33%) | 0.0 V | 494.2 V (2059.17%) | 209720.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 209.72 V (873.83%) | 0.0 V | 345.94 V (1441.42%) | 146804.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 149.8 V (624.17%) | 0.0 V | 247.1 V (1029.58%) | 104860.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 110.38 V (459.91%) | 0.0 V | 182.07 V (758.64%) | 77265.3 W | Drop High |
| 120 mm² | 269 A | 210 A | 87.38 V (364.1%) | 0.0 V | 144.14 V (600.59%) | 61168.3 W | Drop High |
| 150 mm² | 309 A | 241 A | 69.91 V (291.28%) | 0.0 V | 115.31 V (480.47%) | 48934.7 W | Drop High |
| 185 mm² | 353 A | 275 A | 56.68 V (236.17%) | 0.0 V | 93.5 V (389.57%) | 39676.8 W | Drop High |
| 240 mm² | 415 A | 324 A | 43.69 V (182.05%) | 0.0 V | 72.07 V (300.3%) | 30584.2 W | Drop High |
| 300 mm² | 477 A | 372 A | 34.95 V (145.64%) | 0.0 V | 57.66 V (240.24%) | 24467.3 W | Drop High |
| 400 mm² | 570 A | 445 A | 26.21 V (109.23%) | 0.0 V | 43.24 V (180.18%) | 18350.5 W | Drop High |
FAQ — 700 Amp Cable Size at 350 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 700A at 350 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 37× 400 mm² copper cable for 700A over 350m at 24V (voltage drop: 0.71V or 2.95%).
What is the power capacity of 700A at 24V?
At unity power factor, 700A at 24V supports 16.8 kW with a standard 700A circuit breaker.
Related Lengths & Currents (24V)
700A · 5m (24V)700A · 10m (24V)700A · 15m (24V)700A · 20m (24V)700A · 25m (24V)700A · 30m (24V)700A · 35m (24V)700A · 40m (24V)700A · 45m (24V)700A · 50m (24V)700A · 60m (24V)700A · 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)