Voltage Drop Calculator
Calculate the voltage drop in an electrical circuit over a specific distance and resistance.
What is Voltage Drop?
As electrical current travels through a wire, the natural resistance of the metal causes some energy to be lost as heat. This loss of electrical pressure is called voltage drop.
Why it Matters
The National Electrical Code (NEC) recommends a maximum voltage drop of 3% for branch circuits and 5% overall to ensure equipment runs efficiently and safely without overheating.
Disclaimer: This calculator is for educational and learning purposes only. While we strive for accuracy, calculations are provided "as-is" without warranty. The accuracy of results depends on the accuracy of input data provided. Always verify important calculations independently. For critical applications or when accuracy is essential, consult with appropriate professionals or use verified reference sources. Educational calculators may contain rounding or approximations.