Cable Voltage Drop
Quick voltage drop check for copper/aluminum cables (1φ / 3φ)
← All Tools
Engineering Hub
System
Single Phase
Three Phase
Voltage (V)
Current (A)
One-way Length (m)
Conductor
Copper
Aluminum
Cable Size (mm²)
1.5
2.5
4
6
10
16
25
35
50
70
95
120
Enter values to estimate voltage drop.
Uses basic resistive voltage drop estimate (good for quick checks). Always follow local electrical codes for final sizing.