The standardized size rating for electrical wire — a lower number means a thicker wire that can carry more current.
A standardized measurement system for the diameter of electrical conductors, using the American Wire Gauge (AWG) scale where smaller numbers indicate larger wire diameters. Common residential gauges include 14 AWG (15A circuits), 12 AWG (20A circuits), and 10 AWG (30A circuits). Wire gauge must match the circuit's ampacity to prevent overheating.
The inspector rejected the installation because 14 AWG wire was used on a 20-amp circuit, which requires 12 AWG minimum.
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