TL;DR
Wire gauge is the standardized sizing of electrical conductors under the American Wire Gauge system, in which smaller numbers mean thicker wire with more current-carrying capacity. Residential wiring pairs sizes to breakers by ampacity: 14 AWG on 15-amp circuits, 12 on 20, 10 on 30, with 8 and 6 serving ranges, EV chargers, and feeders.
What it means
Wire gauge is the standardized sizing of electrical conductors under the American Wire Gauge system, in which smaller numbers mean thicker wire with more current-carrying capacity. Residential wiring pairs sizes to breakers by ampacity: 14 AWG on 15-amp circuits, 12 on 20, 10 on 30, with 8 and 6 serving ranges, EV chargers, and feeders. Length matters along with load, since long runs to detached garages or far fixtures get upsized beyond the ampacity table to control voltage drop, and the number is printed along the cable jacket where anyone can read it.
Where it sits in the glossary
Wire gauge is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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