Voltage Drop Calculator
Calculate voltage drop in electrical wires. Essential for ensuring proper wire gauge selection and NEC compliance.
Wire Information
Voltage Drop
4.76 V (3.97%)
Marginal - Consider thicker wire
End Voltage
115.24 V
Total Wire Length
200 ft
Visualization
NEC Guidelines
What is Voltage Drop?
Voltage drop is the decrease in electrical potential along a conductor carrying current. Some energy is lost as heat due to the wire's resistance.
Factors Affecting Voltage Drop
Wire length, gauge (thickness), material (copper vs aluminum), and current load all affect voltage drop. Longer runs and thinner wires increase drop.
Reducing Voltage Drop
To reduce voltage drop: use larger wire gauges, shorten wire runs, use copper instead of aluminum, or increase system voltage.
Safety warning: Calculations are for reference only. Always consult a certified electrician. Do not work with electricity without proper training and protection.