Check voltage drop for a two-conductor copper run and compare a candidate fuse with the current limits you enter.
Van Wire Gauge, Voltage Drop & Fuse Sizing Calculator
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How it works
Multiply round-trip cable length by copper resistance and load current. The drop-only gauge is the smallest modeled wire that meets the target. The entered cable and equipment limits set the upper bound for the candidate fuse.
Reference: Victron’s Wiring Unlimited: DC wiring.
What to check before you use the result
Voltage drop is only one cable-sizing check. Use allowable ampacity for the actual installation, including temperature and bundling. Confirm the fuse’s DC voltage, interrupt rating, time-current curve, and manufacturer limits before selecting protection.
