⚡ 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

15 Amp Cable Size at 60 Meters (400V Three-Phase (IEC European Grid))

IEC 60364-5-52 metric conductor sizing (mm²), voltage drop, and power loss calculation for 15 A over 60 m (196.9 ft).

Copper Cable (≤3% Drop)4 mm²Drop: 8.34V (2.08%)
Aluminum Cable (≤3% Drop)6 mm²Drop: 9.17V (2.29%)
Voltage at Load391.7 VLine Loss: 216.7 W
Max Power & Breaker10.39 kW15A MCB/MCCB

IEC 60364 Cable Cross-Section Table (1.5 mm² – 400 mm²) for 15A at 60m

Cross-Section (mm²)Cu AmpacityAl Ampacity Cu Voltage DropLoad VoltageAl Voltage DropPower LossStatus
1.5 mm²16 A12 A22.24 V (5.56%)377.8 V36.68 V (9.17%)577.8 WDrop High
2.5 mm²24 A18 A13.34 V (3.34%)386.7 V22.01 V (5.5%)346.7 W~ ≤5%
4 mm²32 A25 A8.34 V (2.08%)391.7 V13.76 V (3.44%)216.7 W✓ OK (≤3%)
6 mm²41 A32 A5.56 V (1.39%)394.4 V9.17 V (2.29%)144.4 W✓ OK (≤3%)
10 mm²57 A44 A3.34 V (0.83%)396.7 V5.5 V (1.38%)86.7 W✓ OK (≤3%)
16 mm²76 A59 A2.08 V (0.52%)397.9 V3.44 V (0.86%)54.2 W✓ OK (≤3%)
25 mm²101 A78 A1.33 V (0.33%)398.7 V2.2 V (0.55%)34.7 W✓ OK (≤3%)
35 mm²125 A97 A0.95 V (0.24%)399.0 V1.57 V (0.39%)24.8 W✓ OK (≤3%)
50 mm²151 A118 A0.67 V (0.17%)399.3 V1.1 V (0.28%)17.3 W✓ OK (≤3%)
70 mm²192 A150 A0.48 V (0.12%)399.5 V0.79 V (0.2%)12.4 W✓ OK (≤3%)
95 mm²232 A181 A0.35 V (0.09%)399.6 V0.58 V (0.14%)9.1 W✓ OK (≤3%)
120 mm²269 A210 A0.28 V (0.07%)399.7 V0.46 V (0.11%)7.2 W✓ OK (≤3%)
150 mm²309 A241 A0.22 V (0.06%)399.8 V0.37 V (0.09%)5.8 W✓ OK (≤3%)
185 mm²353 A275 A0.18 V (0.05%)399.8 V0.3 V (0.07%)4.7 W✓ OK (≤3%)
240 mm²415 A324 A0.14 V (0.03%)399.9 V0.23 V (0.06%)3.6 W✓ OK (≤3%)
300 mm²477 A372 A0.11 V (0.03%)399.9 V0.18 V (0.05%)2.9 W✓ OK (≤3%)
400 mm²570 A445 A0.08 V (0.02%)399.9 V0.14 V (0.03%)2.2 W✓ OK (≤3%)

FAQ — 15 Amp Cable Size at 60 Meters (400V Three-Phase (IEC European Grid))

What mm² cable size is required for 15A at 60 meters (400V)?

According to IEC 60364-5-52 ampacity and the 3% maximum voltage drop standard, you need 4 mm² copper cable for 15A over 60m at 400V (voltage drop: 8.34V or 2.08%).

What is the power capacity of 15A at 400V?

At unity power factor, 15A at 400V supports 10.39 kW with a standard 15A circuit breaker.