CPSC Document #524
Electrical receptacle outlets in walls and floors may present shock and electrical fire hazards to consumers. The U.S. Consumer Product Safety Commission estimates that 3,900 injuries associated with electrical receptacle outlets are treated in hospital emergency rooms each year. Approximately a third of these injuries occur when young children insert metal objects, such as hair pins and keys, into the outlet, resulting in electric shock or burn injuries to the hand or finger. CPSC also estimates that electric receptacles are involved in 5,300 fires annually which claim 40 lives and injured 110 consumers.
Older homes may have receptacles which are damaged or which, otherwise, may have deteriorated over the years. In one case of a damaged receptacle, a woman suffered severe burns to her hand as she was plugging in a floor lamp. Part of the plastic faceplate of the outlet had broken away, allowing the prongs of the plug to bridge from the electrical contacts to the grounded strap, resulting in intense electrical arcing.
Outlets also deteriorate from repeated use, from plugging-in and unplugging appliances as is often done in kitchens and bathrooms. As a result, when plugs fit loosely into receptacles, especially the two-prong ungrounded type, they may slip partially or completely out of the receptable with only slight movement of the attached cord. Receptacles in this condition may overheat and pose a serious fire hazard; if covered by a curtain or drape, the fire hazard is even greater.
Consumers should have a qualified person replace deteriorated and damaged receptacles and, at the same time, upgrade their home electrical system to present safety standards. The simplest and most effective method to protect against electrocution is through the installation of ground- fault circuit interrupters (GFCIs). If you wish to receive a copy of the Commission's fact sheet on GFCls, send a postcard to "Ground-Fault Circuit Interrupters, Washington, D.C. 20207," and a copy will be sent promptly.
Another method of protection in the home is to install 3-wire receptacles which will accept either 2- or 3-prong plugs. This method, however, requires a grounding conductor which may or may not be available in the outlet box. The least acceptable method is installing another 2-wire receptacle that requires the use of an adapter for accepting 3-wire plugs. Even thought the tab on the adapter may be properly connected to the cover-plate screw, the grounding path may not be adequate to protect against ground faults.