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WireWorks
Matches a circuit's current draw against the standard copper wire ampacity chart.
Real wire sizing also depends on wire length (voltage drop over distance), how many wires are bundled together, ambient temperature, and your specific local electrical code — always verify against the National Electrical Code (or your local equivalent) for an actual installation.
AWG (American Wire Gauge) numbering is inverted from what feels intuitive — a 14 AWG wire is thinner and carries less current than a 10 AWG wire. Always double-check you're reading the right direction on a wire gauge chart.
Recommended wire gauge
12 AWG
Based on standard 60°C copper wire ampacity — always verify against your local electrical code and the specific run's conditions (length, bundling, ambient temperature).
What you entered
Match against the standard 60°C copper wire ampacity chart
find smallest wire rated ≥ 20 A= 12 AWGResult
Recommended wire gauge: 12 AWG
A 20 A circuit needs at least 12 AWG copper wire, per standard 60°C ampacity ratings.