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Modern two or three-wire+ground PVC-insulated cable (e.g., NM-B), produced by such brands as Romex® [ citation needed] Power cords enable all the devices we rely upon daily basis, as it plays a massive role in our lives. It's important to have a few good quality power cords on hand to keep your devices running smoothly. Here, we'll take a look at surge protectors, extension cords, and all types of line cord switch - all of which can be used to help you get the most out of your devices. Mass-impregnated paper-insulated medium voltage cables were commercially practical by 1895. During World War II several varieties of synthetic rubber and polyethylene insulation were applied to cables. [3] Power cords are also available in a variety of different materials, including plastic, rubber, and metal. The material you choose should be based on your specific needs. For example, rubber power cords are a good choice for use in damp or wet areas.
Cables for direct burial or for exposed installations may also include metal armor in the form of wires spiraled around the cable, or a corrugated tape wrapped around it. The armor may be made of steel or aluminum, and although connected to earth ground is not intended to carry current during normal operation. Electrical power cables are sometimes installed in raceways, including electrical conduit and cable trays, which may contain one or more conductors. When it is intended to be used inside a building, nonmetallic sheathed building cable (NM-B) consists of two or more wire conductors (plus a grounding conductor) enclosed inside a thermoplastic insulation sheath that is heat-resistant. It has advantages over armored building cable because it is lighter, easier to handle, and its sheathing is easier to work with. [8] One of the most common places you'll find power cords is in the home. Virtually any appliance that uses electricity will need a power cord, so it's not uncommon to have several different power cords running through your house. The most common appliances that use power cords in the home include televisions, computers, and lamps. While most power cords are simple and straightforward in design, there are a few different types that are available on the market. The following are examples of the most popular. Typical residential and office construction in North America has gone through several technologies: In essence, a power cord can be useful anywhere you have a place to plug it in. However, there are specific applications where they really shine. The following are the most common uses for power cords.Now that you know a little bit more about power cords, it's time to talk about safety. Power cords can be dangerous if they're not used properly, so it's important to be aware of some basic safety tips.
A power cable is an electrical cable, an assembly of one or more electrical conductors, usually held together with an overall sheath. The assembly is used for transmission of electrical power. Power cables may be installed as permanent wiring within buildings, buried in the ground, run overhead, or exposed. Power cables that are bundled inside thermoplastic sheathing and that are intended to be run inside a building are known as NM-B (nonmetallic sheathed building cable). As already mentioned, power cords can be used with a broad array of devices. One thing to note though, is that because many of these devices are unique in nature, the power cords they work with are unique to their specific design. The following is a list of common types of inputs power cords can connect to. For circuits operating at or above 2,000 volts between conductors, a conductive shield should surround the conductor's insulation. This equalizes electrical stress on the cable insulation. This technique was patented by Martin Hochstadter in 1916; [9] the shield is sometimes called a Hochstadter shield. Aside from the semi conductive ("semicon") insulation shield, there will also be a conductor shield. The conductor shield may be semi conductive (usually) or non conducting. The purpose of the conductor shield is similar to the insulation shield: it is a void filler and voltage stress equalizer.
Power cables and Accessories
One of the most common uses for power cords is with power tools. The power tools, such as drills, saws, and sanders, require a cord to run. The cord supplies the electricity needed to run the tool. Power cords for power tools are typically heavy-duty to withstand regular use and abuse. Surge protector power cords are similar to standard power cords, but with the added benefit of surge protection. They feature a built-in circuit breaker that's designed to trip and cut off the flow of electricity in the event of a power surge. This will protect your appliances from damage caused by sudden spikes in voltage. Power cords are also commonly used in industrial settings. All factories and other industrial workplaces have a wide variety of machinery that needs to be powered. This includes everything from conveyor belts to large metal-working machines. Modern power cables come in a variety of sizes, materials, and types, each particularly adapted to its uses. [6] Large single insulated conductors are also sometimes called power cables in the industry. [7] Power cords exist for one primary reason - to transfer power. They relay energy from point A to point B by way of an electrical circuit. This is made possible by a few key components that are found within the power cord itself.
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