When you hook up a power tool to an heavy-duty extension cord, remember that all cords are not alike and all power tools do not necessarily require the same size cord. Check each tool’s owners manual to find out its requirements. Here’s a helpful guide for cords less than 50 ft.
#12 gauge – 1920 watts – 16 amps – large bench saws
#14 gauge – 1440 watts – 12 amps – portable power saws, routers
#16 gauge – 840 watts – 7 amps – belt sanders, recip saws
#18 gauge – 600 watts – 5 amps – drills, small sanders
