700 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 700 A over 15 m (49.2 ft).
Copper Cable (≤3% Drop)2× 400 mm²Drop: 0.56V (2.34%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.85V (7.72%)
Voltage at Load23.4 VLine Loss: 393.2 W
Max Power & Breaker16.8 kW700A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 700A 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 | 299.6 V (1248.33%) | 0.0 V | 494.2 V (2059.17%) | 209720.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 179.76 V (749.0%) | 0.0 V | 296.52 V (1235.5%) | 125832.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 112.35 V (468.13%) | 0.0 V | 185.32 V (772.19%) | 78645.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 74.9 V (312.08%) | 0.0 V | 123.55 V (514.79%) | 52430.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 44.94 V (187.25%) | 0.0 V | 74.13 V (308.87%) | 31458.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 28.09 V (117.03%) | 0.0 V | 46.33 V (193.05%) | 19661.2 W | Drop High |
| 25 mm² | 101 A | 78 A | 17.98 V (74.9%) | 6.0 V | 29.65 V (123.55%) | 12583.2 W | Drop High |
| 35 mm² | 125 A | 97 A | 12.84 V (53.5%) | 11.2 V | 21.18 V (88.25%) | 8988.0 W | Drop High |
| 50 mm² | 151 A | 118 A | 8.99 V (37.45%) | 15.0 V | 14.83 V (61.77%) | 6291.6 W | Drop High |
| 70 mm² | 192 A | 150 A | 6.42 V (26.75%) | 17.6 V | 10.59 V (44.12%) | 4494.0 W | Drop High |
| 95 mm² | 232 A | 181 A | 4.73 V (19.71%) | 19.3 V | 7.8 V (32.51%) | 3311.4 W | Drop High |
| 120 mm² | 269 A | 210 A | 3.74 V (15.6%) | 20.3 V | 6.18 V (25.74%) | 2621.5 W | Drop High |
| 150 mm² | 309 A | 241 A | 3.0 V (12.48%) | 21.0 V | 4.94 V (20.59%) | 2097.2 W | Drop High |
| 185 mm² | 353 A | 275 A | 2.43 V (10.12%) | 21.6 V | 4.01 V (16.7%) | 1700.4 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.87 V (7.8%) | 22.1 V | 3.09 V (12.87%) | 1310.8 W | Drop High |
| 300 mm² | 477 A | 372 A | 1.5 V (6.24%) | 22.5 V | 2.47 V (10.3%) | 1048.6 W | Drop High |
| 400 mm² | 570 A | 445 A | 1.12 V (4.68%) | 22.9 V | 1.85 V (7.72%) | 786.5 W | Drop High |
FAQ — 700 Amp Cable Size at 15 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 700A at 15 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 700A over 15m at 24V (voltage drop: 0.56V or 2.34%).
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 · 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 · 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)