Quickly compare common AWG copper wire sizes, typical ampacity, resistance, and area. Use the built-in estimator for a fast first-pass wire gauge recommendation based on current, distance, and system voltage.
Use this AWG wire gauge reference chart to quickly compare common copper wire sizes, ampacity, and resistance. This page is intended as a fast engineering reference for automation, controls, machine wiring, and early electrical design work.
Actual allowable ampacity depends on insulation type, conductor count, ambient temperature, installation method, terminal ratings, and code requirements. Always verify final conductor sizing against NEC, local code, and your application conditions.
Useful for automation panel work, controls circuits, sensors, actuators, solenoids, machine wiring, and early electrical design when you need a fast conductor reference.
Enter the real expected current, not just the nominal device label if startup or inrush current matters.
The estimator uses round-trip conductor length for voltage drop screening.
Use the 3% result as an early design screen, especially on 24 VDC controls circuits.
Verify against electrical code, insulation rating, ambient temperature, and installation method.
This table gives common copper conductor sizes, typical amp ratings, resistance, and area values for quick comparison.
| AWG | Typical Amp Rating | Ohms / 1000 ft | Area (mm²) |
|---|---|---|---|
| 14 | 15A | 2.525 | 2.08 |
| 12 | 20A | 1.588 | 3.31 |
| 10 | 30A | 0.999 | 5.26 |
| 8 | 40A | 0.628 | 8.37 |
| 6 | 55A | 0.395 | 13.3 |
| 4 | 70A | 0.248 | 21.1 |
| 2 | 95A | 0.156 | 33.6 |
| 1/0 | 125A | 0.098 | 53.5 |
Enter current and one-way distance to get a quick wire gauge recommendation based on a simple ampacity and voltage drop check. This is a practical estimation tool, not a code replacement.
Save quick gauge estimates and reload common current/distance scenarios.
Get connected with a qualified automation integrator if you need help with controls wiring, panel design, conductor sizing, or troubleshooting real voltage and load issues in the field.
Find an IntegratorThis page is great for a fast first-pass conductor choice, but real wire sizing still depends on installation method, ambient temperature, conductor bundling, terminal temperature rating, startup current, and code rules.
For real electrical design, this page usually works best alongside a more detailed voltage drop calculation and actual device load review so you can confirm both ampacity and delivered voltage at the equipment.