A power cord is a connector set with three parts: a flexible cord, a plug, and a plug cover. The cord is made of highly conductive wire that is insulated and protected by a protective outer jacket. The plug and cover on one end are molded to fit into an electrical receptacle. The other end typically has a receptacle of the same size and configuration. Power cords are generally rated for the voltage and current capacity of the electrical receptacle.
Consumer products and information technology equipment use power cords. They may also be used outdoors or in hazardous locations. The jackets are made of insulative materials such as neoprene and thermoplastic. While many cords are made of copper, not all are electrically conductive. The wire gauge is dependent on the application. Likewise, the wire type and jacket material will determine the voltage rating. When choosing a cord, look for one with both RoHS and REACH certifications.
Power cords come in a variety of different grades and are required by specific appliances. The cord you choose for a particular appliance will depend on the voltage it uses. The voltage generator power cord and location of the appliance will also determine which cord you need. However, regardless of the voltage or location of use, you should always consider safety. Power cords come in various grades, so be sure to choose the best quality possible. Investing in the highest quality cords will protect your appliances and prevent you from incurring unnecessary costs in repairs. Further, they will protect you from electrical hazards.
NEMA defines the types of plugs and receptacles that are used for electrical appliances in North America. The NEMA 5-15R standard, for example, specifies receptacles that have 15 amps of power and a plug with an odd number. The NEMA standard specifies the configuration of electrical receptacles in North America. For this purpose, NEMA power cords are available for purchase. The NEMA type A plug has two conducting blades, while the NEMA type B has a third ground rod.
A basic NEMA one power cord has two flat pins that are almost five inches apart. Below the pins is a round pin. The third pin is usually used for grounding. This cord is also commonly called a grounded plug. While there are a variety of different types of power cords, the basic NEMA 5-15 is the most common. There are many variations of the NEMA 1 cord. All three of them have their benefits and disadvantages.
To avoid electrical fires, power cords must have a higher electrical rating than the product that is being used. Typically, the electrical rating of the plug is 125 percent higher than that of the product, and an under-rated cord may not be safe. ITE equipment is rated 125Vac/10A in North America and more. These standards vary depending on where you live. For example, in the U.S., power cords for mobile devices carry a UL-certified UL 817.
