Shielded wire is covered in a protective sheath to reduce electromagnetic interference. It can be used anywhere wiring overlaps and is available in various types. Shielding can be added to existing wiring with kits. It is important to select a product that provides adequate shielding.
A shielded wire is wire that has been covered in a protective sheath to reduce the amount of electromagnetic radiation it emits. This is designed to reduce the amount of electromagnetic interference (EMI) associated with that wire. There are many types of shielded wire available that can be used in many different applications. Hardware and electronics stores usually carry this product and can order special products at the request of their customers if someone needs a particular type, brand, design or style for a project.
Most people are at least vaguely familiar with electromagnetic interference. Examples include distortion on monitors and televisions caused by EMI, crosstalk on cell phones and cordless phones, radio interruptions, and electric lights flickering. Electromagnetic interference can be caused by nature or by various devices in the vicinity, especially if wires cross close to each other. It can damage a circuit or interfere with its operation, and is often extremely irritating.
With shielded wire, even when the wires pass close to each other, they cannot interfere with each other. People can use shielded cable anywhere wiring is likely to overlap, and shielded conduit for things like house wiring. People choose to use shielding if they suspect a particular device may be causing electromagnetic interference. For example, a large television might have a shielded cable as the power cord so that it doesn’t create problems with other devices in the area.
Companies that design shielded cabling and shield kits generally test their products thoroughly to confirm they will work. The wire can state the tolerances it was tested for so people know if it’s appropriate for the setting or not. It is important to select a product that provides adequate shielding, otherwise interference may continue to be a problem despite the use of shielding. People who are unsure of the type of wiring to get can seek advice from a contractor or electrician.
For convenience, several types of wiring are available in shielded form. People can also add shielding to existing wiring with various cable shielding kits that are often available at electronics stores and in the electrical department at places like home improvement stores. As a general rule, it tends to be more expensive to install shielded cabling, but cabling may be necessary or strongly recommended to keep devices functioning properly, in which case people may find the expense acceptable given their conditions.
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