16 Amp Cable Size at 70 Meters (24V DC (Off-Grid Solar / Industrial Control))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 16 A over 70 m (229.7 ft).
Copper Cable (≤3% Drop)70 mm²Drop: 0.68V (2.85%)
Aluminum Cable (≤3% Drop)120 mm²Drop: 0.66V (2.75%)
Voltage at Load23.3 VLine Loss: 11.0 W
Max Power & Breaker0.38 kW16A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 16A at 70m
| 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 | 31.96 V (133.16%) | 0.0 V | 52.71 V (219.64%) | 511.3 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 19.17 V (79.89%) | 4.8 V | 31.63 V (131.79%) | 306.8 W | Drop High |
| 4 mm² | 32 A | 25 A | 11.98 V (49.93%) | 12.0 V | 19.77 V (82.37%) | 191.7 W | Drop High |
| 6 mm² | 41 A | 32 A | 7.99 V (33.29%) | 16.0 V | 13.18 V (54.91%) | 127.8 W | Drop High |
| 10 mm² | 57 A | 44 A | 4.79 V (19.97%) | 19.2 V | 7.91 V (32.95%) | 76.7 W | Drop High |
| 16 mm² | 76 A | 59 A | 3.0 V (12.48%) | 21.0 V | 4.94 V (20.59%) | 47.9 W | Drop High |
| 25 mm² | 101 A | 78 A | 1.92 V (7.99%) | 22.1 V | 3.16 V (13.18%) | 30.7 W | Drop High |
| 35 mm² | 125 A | 97 A | 1.37 V (5.71%) | 22.6 V | 2.26 V (9.41%) | 21.9 W | Drop High |
| 50 mm² | 151 A | 118 A | 0.96 V (3.99%) | 23.0 V | 1.58 V (6.59%) | 15.3 W | ~ ≤5% |
| 70 mm² | 192 A | 150 A | 0.68 V (2.85%) | 23.3 V | 1.13 V (4.71%) | 11.0 W | ✓ OK (≤3%) |
| 95 mm² | 232 A | 181 A | 0.5 V (2.1%) | 23.5 V | 0.83 V (3.47%) | 8.1 W | ✓ OK (≤3%) |
| 120 mm² | 269 A | 210 A | 0.4 V (1.66%) | 23.6 V | 0.66 V (2.75%) | 6.4 W | ✓ OK (≤3%) |
| 150 mm² | 309 A | 241 A | 0.32 V (1.33%) | 23.7 V | 0.53 V (2.2%) | 5.1 W | ✓ OK (≤3%) |
| 185 mm² | 353 A | 275 A | 0.26 V (1.08%) | 23.7 V | 0.43 V (1.78%) | 4.1 W | ✓ OK (≤3%) |
| 240 mm² | 415 A | 324 A | 0.2 V (0.83%) | 23.8 V | 0.33 V (1.37%) | 3.2 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 0.16 V (0.67%) | 23.8 V | 0.26 V (1.1%) | 2.6 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.12 V (0.5%) | 23.9 V | 0.2 V (0.82%) | 1.9 W | ✓ OK (≤3%) |
FAQ — 16 Amp Cable Size at 70 Meters (24V DC (Off-Grid Solar / Industrial Control))
What mm² cable size is required for 16A at 70 meters (24V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 70 mm² copper cable for 16A over 70m at 24V (voltage drop: 0.68V or 2.85%).
What is the power capacity of 16A at 24V?
At unity power factor, 16A at 24V supports 0.38 kW with a standard 16A circuit breaker.
Related Lengths & Currents (24V)
16A · 5m (24V)16A · 10m (24V)16A · 15m (24V)16A · 20m (24V)16A · 25m (24V)16A · 30m (24V)16A · 35m (24V)16A · 40m (24V)16A · 45m (24V)16A · 50m (24V)16A · 60m (24V)10A · 70m (24V)20A · 70m (24V)25A · 70m (24V)32A · 70m (24V)40A · 70m (24V)50A · 70m (24V)63A · 70m (24V)80A · 70m (24V)100A · 70m (24V)125A · 70m (24V)160A · 70m (24V)200A · 70m (24V)