A screw terminal is a type of electrical connector where a wire is clamped down to metal by a screw. An electrical connector is a conductive device for joining Electrical circuits together A wire is a single usually cylindrical, elongated string of drawn Metal. A clamp is a fastening device to hold or secure objects tightly together to prevent movement or separation through the application of inward Pressure. The M acro E xpansion T emplate A ttribute L anguage complements TAL, providing macros which allow the reuse of code across A screw is a shaft with a helical groove or thread formed on its surface and provision at one end to turn the screw The wire is sometimes just stripped of electrical insulation at the end, and is bent in a U or J shape to fit around the shaft of the screw. An insulator, also called a Dielectric, is a material that resists the flow of Electric current. Alternatively, a lug can be crimped onto the end of the wire to protect it. Setscrews are also used, as in a luster terminal or lustre terminal, but lugs will not fit into them. A Set screw, is a type of Screw generally used to secure an object within another object For both lugs and bare wire, the screw is tightened for a secure connection.
Description and usage
Screw terminals are commonly used to connect a chassis ground, such as on a record player or surge protector. In Electrical engineering, the term ground or earth has several meanings depending on the specific application areas The phonograph, or gramophone, was the most common device for playing recorded Sound from the 1870s through the 1980s A surge protector is an appliance designed to protect electrical devices from Voltage spikes A surge protector attempts to regulate the Voltage supplied Most public address systems in buildings also use them for speakers, and sometimes for other outputs and inputs. A public address or " PA " system is an electronic amplification system with a mixer, Amplifier and Loudspeakers used to For the Marty Friedman album see Loudspeaker (album A loudspeaker, speaker, or speaker system is an electroacoustical They are also used extensively in wiring for electricity, for connecting electrical outlets and switches to the mains, and for connecting major appliances like clothes dryers and ovens to the particular plug installed in a home, or directly hard-wiring to the house, as required by local electrical codes in the US. Electrical wiring in general refers to insulated conductors used to carry Electricity, and associated devices A switch is a mechanical device used to connect and disconnect an electric Circuit at will Refrigerator1svg|left|100px]]A major appliance, or domestic appliance, is usually defined as a large Machine which accomplishes some routine housekeeping task which A clothes dryer or tumble dryer is a household appliance that is used to remove the moisture from a load of Clothing and other Textiles, generally An oven is an enclosed compartment for Heating, Baking or Drying. An electrical code is a set of regulations for electrical wiring Screw terminals for earth ground connections are used on most US outlets, even for those that otherwise have "rear-wire" push-in connections, despite the difficulty of bending heavy-gauge solid copper around a screw with pliers. In Electrical engineering, the term ground or earth has several meanings depending on the specific application areas Wire gauge is a Measurement of how large a Wire is either in Diameter or cross sectional Area. Copper (ˈkɒpɚ is a Chemical element with the symbol Cu (cuprum and Atomic number 29 Pliers are Hand tools designed primarily for gripping objects by using Leverage. Grounding screws are often marked green, and when used on consumer electronics often have a washer with gripping "teeth". Consumer electronics include electronic equipment intended for everyday use A washer is a thin plate (typically disk-shaped with a hole (typically in the middle that is normally used to distribute the load of a threaded fastener.
Multiway version
Multiple screw terminals can be arranged as a barrier strip, with each short metal strip having a pair of screws. This is used for connecting two different components, one on each side of the pairs. This arrangement is common in luster terminals, as pictured at right. These are known as connector strips or choc blocks in the UK. Conversely, terminals can also be arranged as a terminal strip or terminal block, with several screws along (typically) two long strips. This creates a bus bar for power distribution, and so may also include a master input connector, usually binding posts and/or banana connectors. A busbar in Electrical power distribution refers to thick strips of Copper or Aluminium that conduct Electricity within a switchboard Electricity distribution is the penultimate stage in the delivery (before retail) of Electricity to end users A binding post is a connector commonly used on Electronic test equipment to terminate (attach a single wire or test lead A banana connector (commonly banana plug for the male, banana jack for the female) is a single- Wire (one conductor
Advantages
One advantage of screw terminals are that no connectors are used, thus no compatibility problems with mismatched sizes or shapes. Additionally, the connections are very secure, both physically and electrically, because they firmly contact a large section of wire. This is also a disadvantage however, because it can take a few minutes to secure or undo a set of connections that could otherwise be simply plugged or unplugged. Another disadvantage is that their use with wire too thin is liable to partly cut through the wire.
An alternative in some countries is to use wire nuts, usually done where there is no chassis involved. Wire-Nut is a registered trademark of Ideal Industries for a twist-on wire connector A chassis (plural "chassis" (ˈʃæːsiː ˈtʃæːsiː consists of a framework that supports an inanimate object analogous to an Animal 's
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