technology ToolUpdated 2026-09-21
Wire Size & Cable Sizing Calculator
Selecting the correct wire gauge prevents electrical fires, overheating, and equipment malfunction. Enter your load current, operating voltage, and run distance to find the recommended American Wire Gauge (AWG) size.
Frequently Asked Questions
Why does wire size increase with distance?
Longer electrical cables accumulate more electrical resistance. To keep voltage drop within the safe 3% threshold, larger diameter wires with lower resistance must be used.
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