AWG (American Wire Gauge)
The US standard for wire diameter — smaller numbers mean thicker wire. Residential circuits pair 15A breakers with 14 AWG copper, 20A with 12, 30A with 10. Long runs upsize one gauge to hold voltage drop under 3% per NEC guidance.
Where this appears in real estimates
This term isn't trivia — it's a working variable. These tools use it directly:
- wire size calculator — Copper wire gauge (AWG) from circuit amperage and run length.…
- conduit fill calculator — Max conductor counts per conduit size at NEC 40% fill.…
- electrical load calculator — Estimate service demand from square footage and major appliances.…
Go deeper
- Bagged Concrete vs Ready-Mix — head-to-head decision guide
- Complete Asphalt Driveway Project — full project walkthrough
- Asphalt in Texas — local pricing & climate
- Read the field guide on the blog — practitioner-level detail
- Related engineering article — from our licensed engineer
Reviewed: · Part of the CalculatorAsphalt Construction Glossary · Sources: see methodology & standards.