Cable voltage drop
Resistive voltage-drop estimate for copper cable using one-way length.
Inputs
Calculations run in your browser. Your input values are not submitted or saved.
Results
- Voltage drop
- 6.06217783 V
- Percentage drop
- 1.51554446 %
Copper estimate at the reference temperature and unity power factor only. Reactance, temperature, installation method, short-circuit conditions and ampacity are not included.
Formula & guidance
ΔV=kρLI/A; ρ=0.0175 Ω mm²/m
Copper estimate at the reference temperature and unity power factor only. Reactance, temperature, installation method, short-circuit conditions and ampacity are not included.
Change the example inputs and check each field’s units. Use equipment datasheets and applicable project standards for final decisions. Results do not establish Canadian electrical-code compliance or certify a design.
Technical reference and further reading ↗