Here is some advice on using power tools this summer, from product testing and certification company CSA International:
Inspect all tools and cords before each use. Never use a power tool that has a cracked casing, loose parts or frayed cords. Ensure that all safety guards have been put in place and are in proper working order.
Use only electric power tools that have either a three-prong plug or double insulation with a heavy enough gauge -- or wire size -- to handle the electricity load. Use an outlet with a ground fault circuit interrupter to protect against electric shock.
Make sure the tool is turned off before it is plugged in or unplugged. Always turn off and unplug the tool before changing parts such as drill bits or cutting blades.
Use an extension cord only as a temporary connection. Never link extension cords; instead, use a single cord that is long enough to reach from the outlet to an appliance or tool without stretching. When working outside, only use cords clearly labeled for outdoor use.
