Light-duty extension cords are those that resemble lamp wire cord. These cords should never be used with anything other than very light-duty devices. They are especially dangerous to use with space heaters and other heat-generating appliances, such as toasters or clothes irons, which draw heavy electrical loads
A 16-gauge extension cord is for light duty applications (holiday lights, portable fans, hedge trimmers, etc.). A 14-gauge cord is for medium duty applications (lawnmowers, power drills, table saws, etc.).
Light duty cords are usually constructed with a two-prong plug, while heavy-duty comes in a three-prong plug. The additional prong is allocated for grounding to reduce electrical shock. In contrast, the two-prong cord is suitable for lamps and small appliances for home use.
| DEVICE AMPS: | EXTENSION CORD SIZE: | MAXIMUM WATTAGE (AT 110V): |
|---|---|---|
| Up To 10 Amps | 16 AWG (Light Duty Cord) | 1,100 Watts |
| 11 To 13 Amps | 14 AWG (Medium Duty Cord) | 1,430 Watts |
| 14 To 15 Amps | 12 AWG (Heavy Duty Cord) | 1,650 Watts |
| 16 To 20 Amps | 10 AWG (Extra Heavy Duty Cord) | 2,200 Watts |
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