375 Amp Cable Size at 20 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 375 A over 20 m (65.6 ft).
Copper Cable (≤3% Drop)240 mm²Drop: 1.34V (2.79%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 1.32V (2.76%)
Voltage at Load46.7 VLine Loss: 501.6 W
Max Power & Breaker18.0 kW400A MCB/MCCB
IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 375A at 20m
| 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 | 214.0 V (445.83%) | 0.0 V | 353.0 V (735.42%) | 80250.0 W | Drop High |
| 2.5 mm² | 24 A | 18 A | 128.4 V (267.5%) | 0.0 V | 211.8 V (441.25%) | 48150.0 W | Drop High |
| 4 mm² | 32 A | 25 A | 80.25 V (167.19%) | 0.0 V | 132.38 V (275.78%) | 30093.8 W | Drop High |
| 6 mm² | 41 A | 32 A | 53.5 V (111.46%) | 0.0 V | 88.25 V (183.85%) | 20062.5 W | Drop High |
| 10 mm² | 57 A | 44 A | 32.1 V (66.88%) | 15.9 V | 52.95 V (110.31%) | 12037.5 W | Drop High |
| 16 mm² | 76 A | 59 A | 20.06 V (41.8%) | 27.9 V | 33.09 V (68.95%) | 7523.4 W | Drop High |
| 25 mm² | 101 A | 78 A | 12.84 V (26.75%) | 35.2 V | 21.18 V (44.12%) | 4815.0 W | Drop High |
| 35 mm² | 125 A | 97 A | 9.17 V (19.11%) | 38.8 V | 15.13 V (31.52%) | 3439.3 W | Drop High |
| 50 mm² | 151 A | 118 A | 6.42 V (13.38%) | 41.6 V | 10.59 V (22.06%) | 2407.5 W | Drop High |
| 70 mm² | 192 A | 150 A | 4.59 V (9.55%) | 43.4 V | 7.56 V (15.76%) | 1719.6 W | Drop High |
| 95 mm² | 232 A | 181 A | 3.38 V (7.04%) | 44.6 V | 5.57 V (11.61%) | 1267.1 W | Drop High |
| 120 mm² | 269 A | 210 A | 2.68 V (5.57%) | 45.3 V | 4.41 V (9.19%) | 1003.1 W | Drop High |
| 150 mm² | 309 A | 241 A | 2.14 V (4.46%) | 45.9 V | 3.53 V (7.35%) | 802.5 W | Drop High |
| 185 mm² | 353 A | 275 A | 1.74 V (3.61%) | 46.3 V | 2.86 V (5.96%) | 650.7 W | Drop High |
| 240 mm² | 415 A | 324 A | 1.34 V (2.79%) | 46.7 V | 2.21 V (4.6%) | 501.6 W | ✓ OK (≤3%) |
| 300 mm² | 477 A | 372 A | 1.07 V (2.23%) | 46.9 V | 1.76 V (3.68%) | 401.2 W | ✓ OK (≤3%) |
| 400 mm² | 570 A | 445 A | 0.8 V (1.67%) | 47.2 V | 1.32 V (2.76%) | 300.9 W | ✓ OK (≤3%) |
FAQ — 375 Amp Cable Size at 20 Meters (48V DC (LiFePO4 Battery Bank / Telecom))
What mm² cable size is required for 375A at 20 meters (48V)?
According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 240 mm² copper cable for 375A over 20m at 48V (voltage drop: 1.34V or 2.79%).
What is the power capacity of 375A at 48V?
At unity power factor, 375A at 48V supports 18.0 kW with a standard 400A circuit breaker.
Related Lengths & Currents (48V)
375A · 5m (48V)375A · 10m (48V)375A · 15m (48V)375A · 25m (48V)375A · 30m (48V)375A · 35m (48V)375A · 40m (48V)375A · 45m (48V)375A · 50m (48V)375A · 60m (48V)375A · 70m (48V)10A · 20m (48V)16A · 20m (48V)20A · 20m (48V)25A · 20m (48V)32A · 20m (48V)40A · 20m (48V)50A · 20m (48V)63A · 20m (48V)80A · 20m (48V)100A · 20m (48V)125A · 20m (48V)160A · 20m (48V)200A · 20m (48V)