Extension cords are used to extend the length of power cords and come in various lengths, sizes, and designs. They are designed for indoor or outdoor use and can handle different electrical loads. Buyers should check the plug type before purchasing and some cords have special features like power strips or wireless extenders.
An extension cord is a type of electrical wiring used to extend the length of a power cord. A standard extension cord consists of one or more metal wires protected by an insulating plastic or PVC jacket. One end of the cord has an input plug for electrical devices, while the other has a prong plug that fits into a wall outlet. These cords allow users to power items located away from an electrical outlet or even items located outdoors.
Extension cords come in many lengths and sizes to meet the needs of different users. Typically, buyers choose a short cord for convenience and ease of use on small jobs, while long cords may be needed for projects located away from a power outlet. Contractors and others who frequently use an extension cord can purchase several cords of various lengths to accommodate different types of projects. Thicker cables typically contain thicker wires, which leave them capable of transferring higher electrical loads. Thinner cables, on the other hand, contain fewer wires and are designed to handle lighter loads of energy.
Each extension cord is specifically designed for indoor or outdoor use. A cable rated for outdoor use can be used safely indoors, but an indoor cable should never be used outdoors. Industrial-rated cables are designed to withstand use in the presence of oil, chemicals, or other materials that could cause corrosion.
Before choosing an extension cord, buyers should check the electrical plug to determine which cords will work with different types of appliances. Some lights and basic appliances use a two-prong outlet, while microwave ovens and other large appliances require a three-prong outlet. This third prong acts to ground the cable, so cables with missing ground prongs should not be used. Some special applications may also require an extension cord with a twist-lock connector or other specialized design.
In addition to the basic extension cord designs, some cables include special features that add convenience and versatility. While most cords power only one appliance, some contain a special strip that can be used to power two or more appliances. This power strip often comes with its own on-off switch to help conserve energy when appliances are not in use.
Wireless extenders offer a convenient alternative to traditional cables. To operate these units, users plug the cord base into any wall outlet. The base transmits energy to a receiving unit using microwave or radio waves. Users can then connect items to the receiver to power them without the use of wires.
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