Voltage Drop Calculator

Calculate voltage drop over distance per NEC guidelines

Circuit Information

Conductor Material

Circuit Type

Wire Size (AWG/kcmil)

System Voltage (V)

Load Current (A)

One-Way Distance (ft)

Voltage Drop Results

Enter circuit parameters to see results

NEC Guidelines

Branch Circuits: 3% maximum recommended

Feeders: 2% maximum recommended

Total System: 5% maximum (feeders + branch)

Based on NEC Article 210.19(A) and 215.2(A)(1). Always verify with local codes.