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DC cable voltage drop

Check resistive voltage drop along the outgoing and return conductors of a DC circuit.

Resistive DC voltage-drop sizing. Ampacity, protection and installation conditions require separate checks.

min 0 · max 10000000

min 1e-9 · max 1000

min 0.001 · max 100000

Results

Enter inputs above, then tap Calculate.

Method and assumptions

Resistive DC voltage-drop sizing. Ampacity, protection and installation conditions require separate checks.

Related calculators

Check the stated method and limits against your installation. Results are calculation aids, not certification.

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Calculation model 2026-11-02.1