Wire Gauges and Uses

Wire Use	Rated Ampacity	Wire Gauge
Low-voltage Lighting and Lamp Cords	10 Amps	18 Gauge
Extension Cords	13 Amps	16 Gauge
Light Fixtures, Lamps, Lighting Runs	15 Amps	14 Gauge
Receptacles, 110-volt Air Conditioners, Sump Pumps, Kitchen Appliances	20 Amps	12 Gauge
Electric Clothes Dryers, 220-volt Window Air Conditioners, Built-in Ovens, Electric Water Heaters	30 Amps	10 Gauge
Cook Tops	45 Amps	8 Gauge
Electric Furnaces, Large Electric Heaters	60 Amps	6 Gauge
Electric Furnaces, Large Electric Water Heaters, Sub Panels	80 Amps	4 Gauge
Service Panels, Sub Panels	100 Amps	2 Gauge
Service Entrance	150 Amps	1/0 Gauge
Service Entrance	200 Amps	2/0 Gauge