⚡ 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

425 Amp Cable Size at 600 Meters (415V Three-Phase (UK / Australia Industrial))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 425 A over 600 m (1968.5 ft).

Copper Cable (≤3% Drop)2× 400 mm²Drop: 11.81V (2.85%)
Aluminum Cable (≤3% Drop)400 mm²Drop: 38.98V (9.39%)
Voltage at Load403.2 VLine Loss: 8697.1 W
Max Power & Breaker305.49 kW450A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 425A at 600m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A6301.2 V (1518.36%)0.0 V10394.04 V (2504.59%)4638450.0 WDrop High
2.5 mm²24 A18 A3780.72 V (911.02%)0.0 V6236.42 V (1502.75%)2783070.0 WDrop High
4 mm²32 A25 A2362.95 V (569.39%)0.0 V3897.76 V (939.22%)1739418.8 WDrop High
6 mm²41 A32 A1575.3 V (379.59%)0.0 V2598.51 V (626.15%)1159612.5 WDrop High
10 mm²57 A44 A945.18 V (227.75%)0.0 V1559.11 V (375.69%)695767.5 WDrop High
16 mm²76 A59 A590.74 V (142.35%)0.0 V974.44 V (234.81%)434854.7 WDrop High
25 mm²101 A78 A378.07 V (91.1%)36.9 V623.64 V (150.28%)278307.0 WDrop High
35 mm²125 A97 A270.05 V (65.07%)144.9 V445.46 V (107.34%)198790.7 WDrop High
50 mm²151 A118 A189.04 V (45.55%)226.0 V311.82 V (75.14%)139153.5 WDrop High
70 mm²192 A150 A135.03 V (32.54%)280.0 V222.73 V (53.67%)99395.4 WDrop High
95 mm²232 A181 A99.49 V (23.97%)315.5 V164.12 V (39.55%)73238.7 WDrop High
120 mm²269 A210 A78.77 V (18.98%)336.2 V129.93 V (31.31%)57980.6 WDrop High
150 mm²309 A241 A63.01 V (15.18%)352.0 V103.94 V (25.05%)46384.5 WDrop High
185 mm²353 A275 A51.09 V (12.31%)363.9 V84.28 V (20.31%)37609.1 WDrop High
240 mm²415 A324 A39.38 V (9.49%)375.6 V64.96 V (15.65%)28990.3 WDrop High
300 mm²477 A372 A31.51 V (7.59%)383.5 V51.97 V (12.52%)23192.2 WDrop High
400 mm²570 A445 A23.63 V (5.69%)391.4 V38.98 V (9.39%)17394.2 WDrop High

FAQ — 425 Amp Cable Size at 600 Meters (415V Three-Phase (UK / Australia Industrial))

What mm² cable size is required for 425A at 600 meters (415V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 2× 400 mm² copper cable for 425A over 600m at 415V (voltage drop: 11.81V or 2.85%).

What is the power capacity of 425A at 415V?

At unity power factor, 425A at 415V supports 305.49 kW with a standard 450A circuit breaker.