Voltage Drop Calculator
Voltage Drop Calculator
Calculate voltage drop and power loss in electrical wiring
System Configuration
Values
Voltage Drop
—
—
—
Voltage Drop
—
Drop Percentage
—
Voltage at Load
—
Power Loss
—
Wire Resistance
—
Max Ampacity
| System Type | — |
| Wire Material | — |
| Wire Size | — |
| Round-trip Distance | — |
| Wire Resistance (per 1000ft) | — |
| Wire Resistance (per 1000m) | — |
How to use Voltage Drop Calculator
This is a calculator for the estimation of the voltage drop of an electrical circuit. The "NEC data" tab calculates based on the resistance and reactance data from the National Electrical Code (NEC). The "Estimated resistance" tab calculates based on the resistance data estimated from the wire size. Click the "Other" tab to use customized resistance or impedance data, such as data from other standards or wire manufacturers.