Low-Voltage Cable Run Calculator

Estimate end-of-run voltage, signal loss, and gauge upgrades.

Source voltage (V)Load current (A)One-way distance (ft)Wire gauge

Result

Voltage at load

119.81 V

Drop

0.16%

Loss

0.19 V

Status

About this tool

Cover Cat6 PoE, 18/2 audio, 24V landscape lighting, and 70V speaker runs in one tool. Built around r/DIY is-this-run-going-to-work threads.

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