Safety meetings related to electrical safety
Although most portable electric tools have an equipment grounding conductor and many are double insulated, these methods are not foolproof. A grounding wire could break or a cord could become defective. Using a GFCI overcomes these insulation problems.
Extension cords are designed to be conveniences, not hazards. But too often they're converted into hazards by the people who use them. So, for a few minutes, lets go over some of the ways these safety hazards are formed.
Some people believe that low voltage shocks can't harm them. Actually, these low voltage jolts can be fatal. The severity of a shock is measured by three factors–the quantity of current flowing through the body; and the duration of the current.