Any accident involving a portable electric drill and resulting in burns to a workman warrants a review of electrically powered tools. Regarding a sample accident, the employee was standing on top of a form about six feet from the floor level and was preparing to drill holes with an electric drill. The employee had an arm around a metal pole for support. When the drill was turned on, the man received a severe shock and could not release the drill. The dampness of perspiration plus placing his hand around the metal pole contributed to the electric shock. Another employee working nearby immediately pulled the plug, cutting off the power. The injured employee sustained burns to his neck and both hands. Had the workman been alone, he might have died.
 

Several years ago, an Iowa contractor had a young man using a portable grinding during the building of a high school. It has just rained, and the floor deck had several puddles on it. The young man stopped work for a break, laid his grinder on the edge of a shallow pool. He was electrocuted instantly when he returned and picked up the grinder. If the tool had been grounded, he'd be alive today.
 

Grounding of portable electric tools provides the most convenient and efficient way of safe guarding the operator. If there is any defect or short inside the tool, the current is drained from the metal frame through a ground wire and does not pass through the operator's body. The most efficient method of grounding is through the use of the three wire system. If this system is not possible, then it is recommended that a ground be installed by fastening one end of a wire of at least number 18 gauge to the metal frame of the permanently attached clip. Insulating platforms, rubber mats and rubber gloves are other means to guard against electrical shock. Tools should be inspected frequently for the following malfunctions to reduce the hazard of electrical shock.
 

1. Defective or broken insulation of cord.

2. Improper or poorly made connections to the terminals.

3. Broken or otherwise defective plug.

4. Loose or broken switch.

5. Brushes arcing.