Don't Starve Your Power Tool Motor To Death
Using The Correct Extension Cord Gives Your Tool All The Power It Needs
Some power tools will burn out in 5 minutes or less in severely starved conditions.
Always be aware of the amperage ratings of your tools and your cords
14/3 AWG Cable
  50' 15 AMPS
  100' 13 AMPS
  150' 8 AMPS
  200' 6 AMPS
  250' 5 AMPS
  300' 4 AMPS

REMEMBER:
When you have two or more tools operating simultaneously, you must add the total amperage of all tools operating together to determine the maximum load. Refer to the specification plate on your tools for current draw information

12/3 AWG Cable
  50' 15 AMPS
  100' 15 AMPS
  150' 13 AMPS
  200' 10 AMPS
  250' 7 AMPS
  300' 6 AMPS

To prevent dangerous resistance heat buildup, espicially in light gauge cords, always uncoil completely when operating under heavy loads.
Generally, a 12-3 cord will handle a single tool. Always use 10-3 when multiple tools may be running simultaneously.

10/3 AWG Cable
  50' 15 AMPS
  100' 15 AMPS
  150' 15 AMPS
  200' 15 AMPS
  250' 13 AMPS
  300' 10 AMPS
Amperage
1/2 HP=7.4 AMPS
3/4 HP=10.2 AMPS
1HP=13 AMPS
2 HP=24 AMPS
800 WATTS=7 AMPS
1100 WATTS=10 AMPS
1650 WATTS=15 AMPS

Always follow cord manufacturer's warnings and specifications

More Safety and Label Information ... click here