If you have no way of getting proper grounding (which you should) insulate yourself from the floor by wearing shoes or stand on any insulating material such as a block of wood. Proper grounding prevents the circuitry of all electrical devices from frying in the event of failure and it carries away dangerous current from them sending them to the ground instead of through your body. Having grounding installed is not only necessary for safety but is common sense. Check out with an electrician so you can get your power source properly grounded to prevent injury to you and the other members of your family. SHOCKING!!!! Isn’t it.