Use heavy duty cords when using power tools. When utilizing adapters, make sure to screw in the wire for grounding. Wear rubber soled shoes when operating power tools. Make sure your power tools are grounded or certified double insulated. Don'ts Never turn on an appliance when standing or sitting in water.
Shocks can be fatal.
Never overload a circuit by plugging in too many appliances. Plug three-way grounded plugs into appropriate outlets. Never tamper with the third prong. Never install cords under rugs where they will become worn by foot traffic. Check for overhead lines before climbing ladders or trees.