In all cases, make certain that the receptacle in question is properly grounded. If you are not sure, have a qualified electrician check the receptacle. GROUNDED OUTLET BOX CURRENT CARRYING PRONGS GROUNDING BLADE IS LONGEST OF THE 3 BLADES GROUNDED OUTLET BOX GROUNDING MEANS ADAPTER Fig. A Fig. B 5 EXTENSION CORDS MINIMUM GAUGE EXTENSION CORD RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES Total Use proper extension cords. Make sure your extension cord is in good condition and is a 3