Voltage drop

Overview

Voltage drop in electrical conductors is important for ensuring equipment receives adequate voltage. The NEC recommends maximum 3% voltage drop for branch circuits.

Formula

$\Delta V = \frac{2 \cdot I \cdot L \cdot R}{1000}$

Calculator

Notes

• Results are approximate and should be verified for critical applications
• Input values should be within reasonable engineering ranges

References

• Original Source