American Wire Gauge Sizes

When electricity flows through a wire, the wire’s internal resistance generates heat. If a wire is too thin for the amount of current passing through it (too high a gauge), it will overheat. This can melt the insulation, cause short circuits, or even start a fire. Conversely, using a wire that is unnecessarily thick (too low a gauge) is expensive and difficult to install due to lack of flexibility. Solid vs. Stranded Wire

Pro Tip: If you are wiring a new house, just use 12 AWG for your outlets. It costs a few dollars more per roll than 14 AWG, but it gives you more flexibility for future high-draw devices. american wire gauge sizes

The AWG system measures the cross-sectional area of the metal, regardless of shape. When electricity flows through a wire, the wire’s

0000 (4/0) to 2 AWG: These are extremely thick wires used for main service entrances, large solar power arrays, and heavy industrial machinery.6 to 10 AWG: These sizes are typically found in high-draw household appliances. 6 AWG is common for electric ranges, while 10 AWG is the standard for clothes dryers and water heaters.12 to 14 AWG: This is the "bread and butter" of residential wiring. 12 AWG is standard for kitchen outlets and laundry rooms (usually 20-amp circuits), while 14 AWG is used for general lighting and bedroom outlets (15-amp circuits).16 to 22 AWG: These thinner wires are used for low-voltage applications. You will find them in speaker wires, thermostat controls, doorbell systems, and security sensors. Why Gauge Matters: Ampacity and Safety Conversely, using a wire that is unnecessarily thick