Strip the insulation from the last 3/4 inch of all three wires in the appliance's power cord. Twist the bare end of each wire to pack the individual strands of each wire together.
Remove the two screws on the outside of the plug with a screwdriver. Remove the cover on the plug to expose the terminal screws inside. Loosen all three terminal screws with the screwdriver.
Wrap the bare end of the black wire around the black terminal screw. Tighten the screw to hold the wire in place.
Wrap the bare end of the green wire around the green terminal screw. Tighten the screw to hold the wire in place.
Wrap the remaining wire around the remaining terminal screw. This wire and terminal screw may be red, white or blue. Tighten the screw to hold the wire in place.
Place the cover back on the plug and align the holes on the cover with the holes on the plug. Place the screws into the holes and tighten them with the screwdriver. You may now put the plug into the outlet.