⚡ Cu ρ (75°C): 0.0214 Ω·mm²/m 🔌 NEC / IEC Standards: NFPA 70 & IEC 60364 🇺🇸 US Grid Avg: $0.175/kWh 🇩🇪 DE Grid Avg: €0.345/kWh 🇸🇪 SE Elpris: 1.54 SEK/kWh 🇳🇴 NO Strøm: 1.17 NOK/kWh 🔩 Copper Ref: $9,650/t (2026-10-24)
⚡ IEC 60364-5-52 · DIN VDE · NEK 400 · SS 436 40 00

150 Amp Cable Size at 350 Meters (415V Three-Phase (UK / Australia Industrial))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 150 A over 350 m (1148.3 ft).

Copper Cable (≤3% Drop)185 mm²Drop: 10.52V (2.53%)
Aluminum Cable (≤3% Drop)300 mm²Drop: 10.7V (2.58%)
Voltage at Load404.5 VLine Loss: 2732.8 W
Max Power & Breaker107.82 kW150A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 150A at 350m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A1297.31 V (312.6%)0.0 V2139.95 V (515.65%)337050.0 WDrop High
2.5 mm²24 A18 A778.38 V (187.56%)0.0 V1283.97 V (309.39%)202230.0 WDrop High
4 mm²32 A25 A486.49 V (117.23%)0.0 V802.48 V (193.37%)126393.7 WDrop High
6 mm²41 A32 A324.33 V (78.15%)90.7 V534.99 V (128.91%)84262.5 WDrop High
10 mm²57 A44 A194.6 V (46.89%)220.4 V320.99 V (77.35%)50557.5 WDrop High
16 mm²76 A59 A121.62 V (29.31%)293.4 V200.62 V (48.34%)31598.4 WDrop High
25 mm²101 A78 A77.84 V (18.76%)337.2 V128.4 V (30.94%)20223.0 WDrop High
35 mm²125 A97 A55.6 V (13.4%)359.4 V91.71 V (22.1%)14445.0 WDrop High
50 mm²151 A118 A38.92 V (9.38%)376.1 V64.2 V (15.47%)10111.5 WDrop High
70 mm²192 A150 A27.8 V (6.7%)387.2 V45.86 V (11.05%)7222.5 WDrop High
95 mm²232 A181 A20.48 V (4.94%)394.5 V33.79 V (8.14%)5321.8 W~ ≤5%
120 mm²269 A210 A16.22 V (3.91%)398.8 V26.75 V (6.45%)4213.1 W~ ≤5%
150 mm²309 A241 A12.97 V (3.13%)402.0 V21.4 V (5.16%)3370.5 W~ ≤5%
185 mm²353 A275 A10.52 V (2.53%)404.5 V17.35 V (4.18%)2732.8 W✓ OK (≤3%)
240 mm²415 A324 A8.11 V (1.95%)406.9 V13.37 V (3.22%)2106.6 W✓ OK (≤3%)
300 mm²477 A372 A6.49 V (1.56%)408.5 V10.7 V (2.58%)1685.2 W✓ OK (≤3%)
400 mm²570 A445 A4.86 V (1.17%)410.1 V8.02 V (1.93%)1263.9 W✓ OK (≤3%)

FAQ — 150 Amp Cable Size at 350 Meters (415V Three-Phase (UK / Australia Industrial))

What mm² cable size is required for 150A at 350 meters (415V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 185 mm² copper cable for 150A over 350m at 415V (voltage drop: 10.52V or 2.53%).

What is the power capacity of 150A at 415V?

At unity power factor, 150A at 415V supports 107.82 kW with a standard 150A circuit breaker.