Make sure the extension cord is heavy enough for the intended load. Extension cords are labeled with size and wattage rating of the cord. (Lower-gauge cords are bigger; for example, a 12-gauge cord is larger than a 14-gauge cord.) Here is a general guideline for extension cord size:
ratings:
| Gauge | Max amps | Max watts |
| 18 | 10 | 1,250 |
| 16 | 13 | 1,625 |
| 14 | 15 | 1,875 |
| 12 | 15 | 1,875 |
| 10 | 20 | 2,500 |
AMPS TO WATTS
If the tool or appliance rating is listed in amps rather than watts, simply multiply the amps by 125 to get your wattage (for example, 10 amp tool will require 1,250 watts).
- Use extension cords only on a temporary basis; they are not intended as permanent wiring.
- Unplug cords when not in use; plugged in cords continue to conduct electricity.
- Grab the plug, not the cord, when removing it from an outlet.
- Don't cover extension cords with rugs, clothing or carpet.
- Damaged cable jackets can expose you to an uninsulated electrical conductor.
- Replace old electrical outlets that do not accept the plug of an extension cord.
