1000 Amp Cable Size at 120 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 1000 A over 120 m (393.7 ft).
Copper Cable (≤3% Drop)18× 400 mm²Drop: 0.71V (2.97%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 21.18V (88.25%)
Voltage at Load23.3 VLine Loss: 713.3 W
Max Power & Breaker24.0 kW1000A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 1000A at 120m
| 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 | 3424.0 V (14266.67%) | 0.0 V | 5648.0 V (23533.33%) | 3424000.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 2054.4 V (8560.0%) | 0.0 V | 3388.8 V (14120.0%) | 2054400.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 1284.0 V (5350.0%) | 0.0 V | 2118.0 V (8825.0%) | 1284000.0 W | Drop High |
| 6 mm² | 41 A | 32 A | 856.0 V (3566.67%) | 0.0 V | 1412.0 V (5883.33%) | 856000.0 W | Drop High |
| 10 mm² | 57 A | 44 A | 513.6 V (2140.0%) | 0.0 V | 847.2 V (3530.0%) | 513600.0 W | Drop High |
| 16 mm² | 76 A | 59 A | 321.0 V (1337.5%) | 0.0 V | 529.5 V (2206.25%) | 321000.0 W | Drop High |
| 25 mm² | 101 A | 78 A | 205.44 V (856.0%) | 0.0 V | 338.88 V (1412.0%) | 205440.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 146.74 V (611.43%) | 0.0 V | 242.06 V (1008.57%) | 146742.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 102.72 V (428.0%) | 0.0 V | 169.44 V (706.0%) | 102720.0 W | Drop High |
| 70 mm² | 192 A | 150 A | 73.37 V (305.71%) | 0.0 V | 121.03 V (504.29%) | 73371.4 W | Drop High |
| 95 mm² | 232 A | 181 A | 54.06 V (225.26%) | 0.0 V | 89.18 V (371.58%) | 54063.2 W | Drop High |
| 120 mm² | 269 A | 210 A | 42.8 V (178.33%) | 0.0 V | 70.6 V (294.17%) | 42800.0 W | Drop High |
| 150 mm² | 309 A | 241 A | 34.24 V (142.67%) | 0.0 V | 56.48 V (235.33%) | 34240.0 W | Drop High |
| 185 mm² | 353 A | 275 A | 27.76 V (115.68%) | 0.0 V | 45.79 V (190.81%) | 27762.2 W | Drop High |
| 240 mm² | 415 A | 324 A | 21.4 V (89.17%) | 2.6 V | 35.3 V (147.08%) | 21400.0 W | Drop High |
| 300 mm² | 477 A | 372 A | 17.12 V (71.33%) | 6.9 V | 28.24 V (117.67%) | 17120.0 W | Drop High |
| 400 mm² | 570 A | 445 A | 12.84 V (53.5%) | 11.2 V | 21.18 V (88.25%) | 12840.0 W | Drop High |
FAQ — 1000 Amp Cable Size at 120 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 1000A at 120 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 18× 400 mm² copper cable for 1000A over 120m at 24V (voltage drop: 0.71V or 2.97%).
What is the power capacity of 1000A at 24V?
At unity power factor, 1000A at 24V supports 24.0 kW with a standard 1000A circuit breaker.
Related Lengths & Currents (24V)
1000A · 5m (24V)1000A · 10m (24V)1000A · 15m (24V)1000A · 20m (24V)1000A · 25m (24V)1000A · 30m (24V)1000A · 35m (24V)1000A · 40m (24V)1000A · 45m (24V)1000A · 50m (24V)1000A · 60m (24V)1000A · 70m (24V)10A · 120m (24V)16A · 120m (24V)20A · 120m (24V)25A · 120m (24V)32A · 120m (24V)40A · 120m (24V)50A · 120m (24V)63A · 120m (24V)80A · 120m (24V)100A · 120m (24V)125A · 120m (24V)160A · 120m (24V)200A · 120m (24V)