⚡ 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

500 Amp Cable Size at 10 Meters (415V Three-Phase (UK / Australia Industrial))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 500 A over 10 m (32.8 ft).

Copper Cable (≤3% Drop)400 mm²Drop: 0.46V (0.11%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 0.76V (0.18%)
Voltage at Load414.5 VLine Loss: 401.2 W
Max Power & Breaker359.4 kW500A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 500A at 10m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A123.55 V (29.77%)291.4 V203.8 V (49.11%)107000.0 WDrop High
2.5 mm²24 A18 A74.13 V (17.86%)340.9 V122.28 V (29.47%)64200.0 WDrop High
4 mm²32 A25 A46.33 V (11.16%)368.7 V76.43 V (18.42%)40125.0 WDrop High
6 mm²41 A32 A30.89 V (7.44%)384.1 V50.95 V (12.28%)26750.0 WDrop High
10 mm²57 A44 A18.53 V (4.47%)396.5 V30.57 V (7.37%)16050.0 WDrop High
16 mm²76 A59 A11.58 V (2.79%)403.4 V19.11 V (4.6%)10031.2 WDrop High
25 mm²101 A78 A7.41 V (1.79%)407.6 V12.23 V (2.95%)6420.0 WDrop High
35 mm²125 A97 A5.3 V (1.28%)409.7 V8.73 V (2.1%)4585.7 WDrop High
50 mm²151 A118 A3.71 V (0.89%)411.3 V6.11 V (1.47%)3210.0 WDrop High
70 mm²192 A150 A2.65 V (0.64%)412.4 V4.37 V (1.05%)2292.9 WDrop High
95 mm²232 A181 A1.95 V (0.47%)413.0 V3.22 V (0.78%)1689.5 WDrop High
120 mm²269 A210 A1.54 V (0.37%)413.5 V2.55 V (0.61%)1337.5 WDrop High
150 mm²309 A241 A1.24 V (0.3%)413.8 V2.04 V (0.49%)1070.0 WDrop High
185 mm²353 A275 A1.0 V (0.24%)414.0 V1.65 V (0.4%)867.6 WDrop High
240 mm²415 A324 A0.77 V (0.19%)414.2 V1.27 V (0.31%)668.8 WDrop High
300 mm²477 A372 A0.62 V (0.15%)414.4 V1.02 V (0.25%)535.0 WDrop High
400 mm²570 A445 A0.46 V (0.11%)414.5 V0.76 V (0.18%)401.2 W✓ OK (≤3%)

FAQ — 500 Amp Cable Size at 10 Meters (415V Three-Phase (UK / Australia Industrial))

What mm² cable size is required for 500A at 10 meters (415V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 400 mm² copper cable for 500A over 10m at 415V (voltage drop: 0.46V or 0.11%).

What is the power capacity of 500A at 415V?

At unity power factor, 500A at 415V supports 359.4 kW with a standard 500A circuit breaker.