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Basic Electrical Terms And Definitions Pdf

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Almost all the projects in class will be powered by DC electricity.

Basic Electronics: Getting started with basic electronics is easier than you might think. Common Computer Terms 2.

AC — Alternating Current. The abbreviations AC and DC are often used to mean simply alternating and direct , as when they modify current or voltage. AC is the form in which electric power is delivered to businesses and residences. If you think in terms of water through a hose, amperage would be a measure of water volume flowing through the hose.

101 Basic Electrical Definitions | Current, Volt, Power

AC — Alternating Current. The abbreviations AC and DC are often used to mean simply alternating and direct , as when they modify current or voltage. AC is the form in which electric power is delivered to businesses and residences. If you think in terms of water through a hose, amperage would be a measure of water volume flowing through the hose.

Lower gauge numbers indicate larger conductor size. Further Reading. Cable — A cable is a set of wires, usually encased in an outer protective jacket.

The cables are bound together by clamps, cable ties, cable lacing, sleeves, electrical tape, conduit, a weave of extruded string, or a combination thereof. CE — Conformite Europeene. A European standard of safety. The CE marking on end products indicates compliance with all applicable directives. Conductor — The internal material of a cord that conducts electricity.

Copper is the most common material used for electrical wiring. Silver is the best conductor, but is expensive. Because it does not corrode, gold is used for high-quality surface-to-surface contacts. Connector — A female cord mounted wiring device with the conducting elements recessed behind the mating surface. This type of device is normally wired to be live when nothing is plugged in to it. Therefore, connectors are wired to the source of power.

Their registered mark shows that a product has been independently tested and certified to meet recognized standards for safety or performance. Current — The rate of flow of electrical energy through a conductor or wire, comparable to the amount of water flowing in a pipe.

Dielectric — Any insulating medium, which intervenes between two conductors and permits electrostatic attraction and repulsion to take place across it. Dielectric Test — Tests which consist of the application of a voltage higher than that of the rated voltage for a specified time for the purpose of determining the adequacy against breakdown of insulating materials and spacing under normal conditions.

DC — Direct Current. Current which moves in a single direction in a steady flow. Normal household electricity is alternating current AC which repeatedly reverses its direction. However, many electronics devices require DC, and therefore must convert the current into DC before using it. Ferrite — Ferrimagnetic ceramic non-conductive compound material used to prevent high frequency electrical noise from entering or exiting the equipment.

Fuse — A safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level. An electrical wiring device that disconnects a circuit whenever it detects that the electric current is not balanced between the energized conductor and the return neutral conductor.

Such an imbalance is sometimes caused by current leakage through the body of a person who is grounded and accidentally touching the energized part of the circuit. Ground — A connection between an electrical device and the Earth or at the voltage defined as zero in the U.

Harmonized Code — An international coding system for specifying the attributes of cord voltages, jackets, diameters, etc. Hertz — Measurement of frequency, equaling one cycle per second, U. IEC — International Electrotechnical Commission, an international organization that sets standards for electrical products.

IEC — IEC standard of thirteen 2 or 3 wire plugs, connectors, inlets or outlets usually used in the computer industry. Inlet — A male flange mounted wiring device with the conducting pins protruding and exposed.

This type device should never be wired to make the exposed pins live while the mating device is unplugged. Insulation — The material that encases a conductor preventing leakage of current from a conductor. IP Rating — Ingress Protection Rating, a two digit code, and an optional letter, specifying the level of protection from foreign objects with the first digit referring to protection from solids and the second digit referring to protection from liquids.

The optional letter can be appended to classify only the level of protection against access to hazardous parts by persons or to provide additional information related to the protection of the device.

IP Rating Referance Chart. Midget — Referring to an inlet or outlet with a shallow depth. Commonly mounted in areas where space is limited. Pigtail — A very short patch cable or wiring adapter. Primarily used in the automotive industries where a longer cable assembly is not needed.

Plug — A male cord mounted wiring device with the conducting pins protruding and exposed. This type device should never be wired to make the exposed pins live while unplugged. Therefore, plugs are always dead until they are plugged into a power source such as a wall outlet or generator outlet. Polarized — A plug and connector formed in a way that only allows proper connection.

Receptacle — A female flange mounted wiring device with the conducting elements recessed behind the mating surface. Often referred to as an outlet. Therefore, receptacles are wired to the source of power.

RoHS — Restriction of Hazardous Substances, a European directive dictating materials that may not be used in the manufacture of certain products. Temperature Rating — The maximum temperature at which insulation will maintain its integrity. Terminal — A terminal is the point at which a conductor from an electrical component, device or network comes to an end and provides a point of connection to external circuits. A terminal may simply be the end of a wire or it may be fitted with a connector or fastener.

The connection may be temporary, as for portable equipment, or may require a tool for assembly and removal, or may be a permanent electrical joint between two wires or devices. Locking connectors use curved blades. Once pushed into the receptacle, the plug is twisted and its now-rotated blades latch into the receptacle. To unlatch the plug, the rotation is reversed.

The locking coupling makes for a more reliable connection in commercial and industrial settings, where vibration or incidental impact could disconnect a non-locking connector.

UL — Underwriters Laboratories, an independent non-profit product safety and certification organization. Watt — A unit of power, defined as one joule per second. Wattage is calculated as Voltage x Amperage. Wire Harness — See: cable harness.

Also known as Wiring Assembly and Wiring Loom. The information contained in this website is for general information purposes only. Any reliance you place on such information is therefore strictly at your own risk. Glossary of Common Electrical Terms Discover the meaning of some of the most common electrical terms used in our industry.

A Adapter — A cord or block style device with different ends that allows different devices to connect. Further Reading Sample CSA Compliance Mark Current — The rate of flow of electrical energy through a conductor or wire, comparable to the amount of water flowing in a pipe.

IEC — International Electrotechnical Commission, an international organization that sets standards for electrical products IEC — IEC standard of thirteen 2 or 3 wire plugs, connectors, inlets or outlets usually used in the computer industry.

O OD — Outer Diameter, the outer diameter of a cord. P Pigtail — A very short patch cable or wiring adapter. S Slitting — The designation to separate insulated parallel wires. T Temperature Rating — The maximum temperature at which insulation will maintain its integrity. U UL — Underwriters Laboratories, an independent non-profit product safety and certification organization. W Watt — A unit of power, defined as one joule per second.

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Electric power

Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt , one joule per second. Electric power is usually produced by electric generators , but can also be supplied by sources such as electric batteries. It is usually supplied to businesses and homes as domestic mains electricity by the electric power industry through an electric power grid. Electric power can be delivered over long distances by transmission lines and used for applications such as motion , light or heat with high efficiency.

It will be very useful in my interview time… Whenever i did attend the interview HR quistioned me what is full form of mcb, dp, ups, mccb,robo like that.. If you can update it as quick as possible. What is current, volt, power, circuit? I want the clear explanation with detailness. You only mentioned those electrical definitions.. Thanks for your reply selvin. Subscribe our E2Z.

It is easy to get a little confused when you are talking to an electrician that has been called out to your home or office. This article contains definitions and explanations of terminology used and will help you understand what he or she is talking about. Volts are used with numbers to describe the force of the current. Different countries for example have different voltage, and this is why you need to use items to convert this force when you are charging your mobile phone when travelling for example. Amp is short for Amperage. This is a measurement for the number of electrons flowing through the circuit, versus the force of which they are flowing.

Basic Electrical Terms

Ammeters are always connected in series with the circuit to be tested. It is obtained by multiplying the current in amperes by the time in hours during which current flows. For example, a battery which provides 5 amperes for 20 hours is said to deliver ampere - hours.

Беккер кивнул. - Ты же сказала, что не колешься. Девушка засмеялась: - Это же чудо-маркер.

Glossary of electrical and electronics engineering

 Халохот был профессионалом высокого уровня, сэр. Мы были свидетелями убийства, поскольку находились всего в пятидесяти метрах от места. Все данные говорят, что Танкадо ни о чем таком даже не подозревал. - Данные? - спросил Бринкерхофф.  - Какие такие данные. Танкадо отдал кольцо. Вот и все доказательства.

А потом медленно скрылась из виду в клубах пара. - Отчаянный парень, - пробормотал Хейл себе под нос. Он знал, что задумал Чатрукьян. Отключение ТРАНСТЕКСТА было логичным шагом в случае возникновения чрезвычайной ситуации, а ведь тот был уверен, что в машину проник вирус. К несчастью, это был самый надежный способ собрать в шифровалке всех сотрудников Отдела обеспечения системной безопасности. После таких экстренных действий на главном коммутаторе раздавался сигнал общей тревоги.


Understanding electricity requires knowledge of these basic electrical terms. Alternating Current (AC) — An electric current that reverses its direction many times a second at regular intervals. One ampere is equal to a current flow of one coulomb per second. Apparent Power — Measured in volt-ampers (VA).


Basic Electrical Terms

Platinum Electricians

Старшие должностные лица АНБ имели право разбираться со своими кризисными ситуациями, не уведомляя об этом исполнительную власть страны. АНБ было единственной разведывательной организацией США, освобожденной от обязанности отчитываться перед федеральным правительством. Стратмор нередко пользовался этой привилегией: он предпочитал творить свое волшебство в уединении. - Коммандер, - все же возразила она, - это слишком крупная неприятность, и с ней не стоит оставаться наедине. Вам следовало бы привлечь кого-то .

101 Basic Electrical Definitions | Current, Volt, Power

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