Do not leave a running tool unattended. Do not leave it until it has been turned off, has stopped running completely, and has been unplugged. Do not use light duty power cords. Do not carry electrical tools by the power cord. Do not tie power cords in knots.
Knots can cause short circuits and shocks.
Loop the cords or use a twist lock plug. Do not walk on or allow vehicles or other moving equipment to pass over unprotected power cords. Cords should be put in conduits or protected by placing planks on each side of them. Do not bush away sawdust, shavings or turnings while the tool is running. Never use compressed air for cleaning surfaces or removing sawdust, metal turnings, etc.