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
Keep in mind that while this information provides a comprehensive overview of AWG sizes, local electrical codes and regulations may vary. Always consult with a licensed electrician or relevant authorities for specific guidance on wire sizing and usage in your area. american wire gauge sizes
This is the single most important thing to remember about AWG. As the gauge number goes down , the diameter of the copper goes up . When electricity flows through a wire, the wire’s
If you are running wire 200 feet to a shed or a well pump, the resistance in a long, thin wire will cause . Your motor will run hot and slow. Conversely, using a wire that is unnecessarily thick
Think of it like a shotgun gauge or a piercing needle—the lower the number, the "heavier" and thicker the item.