Age and heavy usage can take their toll on appliance and lamp cords and plugs. Common victims are cords and plugs of appliances you use frequently--irons and blow dryers; ones you've had a long time, such as toasters, lamps, and refrigerators; and vintage models whose electrical systems are simply wearing out.
There are several types of electrical cords. You can usually identify the type by its insulation:
* Lamps and fixtures have molded plastic cords.
* Heaters typically have neoprene, or cotton or rayon braided cords.
* Power tools often have plastic cords.
* Vacuum cleaners generally have ribbed plastic cords.
If you buy a new cord for an appliance, be sure to get one that is the proper type for the appliance.
The three basic kinds of plugs are: self-connecting, terminal-screw, and three-prong. Lamps and small appliances mostly use self-connecting plugs. The prongs clamp onto the wires of the cord, making an automatic connection. These plugs do not meet National Electrical Code standards.
With terminal-screw plugs, the wires attach to screws inside the cord body; this type of plug is usually found on older appliances. An older terminal- screw plug often has a removable insulating disk covering the terminals and wires. Newer plugs have rigid insulating barriers.
Three-prong plugs are used for larger appliances such as washers, dryers, refrigerators, and power tools, and include a prong that grounds the appliance. When planning where you are going to place a large appliance, be sure you have the appropriate kind of outlet available, or plan to install one.
With terminal-screw plugs, the wires attach to screws inside the cord body; this type of plug is usually found on older appliances. An older terminal- screw plug often has a removable insulating disk covering the terminals and wires. Newer plugs have rigid insulating barriers.