DC Voltage Drop Checker

Screen a two-conductor direct-current route with your own system assumptions. The calculation uses resistance = 2 × resistivity × one-way length ÷ conductor area ÷ parallel runs.

SYSTEM PARAMETERS

System voltage (V DC)

Design current (A)

One-way route length (m)

Conductor area (mm²)

Conductor assumption

Parallel runs per polarity

CALCULATION RESULTS

Enter positive project values to calculate.

— Loop resistance (Ω)

— Voltage drop (V)

— Voltage drop (%)

— Conductor loss (W)

This is a planning estimate. Final conductor selection must use the actual cable construction, operating temperature, installation method, connector and termination resistance, code requirements, protection design, and the project team’s allowed voltage drop.

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