Electrical computer may refer to one of the following electrical analog computer . electrical digital computer . DEFAULTSORT Electrical Computer Category Computers dab ... more details
Electrical measurements are the methods, devices and calculations used to measure electrical quantities. Measurement of electrical quantities may be done to measure electrical parameters of a system. Using ... others can be converted into electrical signals, which can then be conveniently measured and recorded. High precision laboratory measurements of electrical quantities are used in experiments to determine ... , and in the definition of the units for electrical measurments, with precision in some cases on the order .... Electrical measurements are a branch of the science of metrology . Measurable independent and semi independent electrical quantities comprise Voltage Electric current Electrical resistance and electrical conductance Electrical reactance and susceptance Magnetic flux Electrical charge by the means of electrometer Magnetic field by the means of Hall sensor Electric field Electrical power by the means of electricity meter S matrix by the means of network analyzer electricalElectrical power spectrum by the means of spectrum analyzer Measurable dependent electrical quantities comprise Inductance Capacitance Electrical impedance defined as vector sum of electrical resistance and electrical reactance Phase between current and voltage and related quality factor Electrical spectral density Electrical phase noise Electrical amplitude noise Transconductance Transimpedance Electrical power ... on electrical measurements http www.tpub.com content doe h1011v1 css h1011v1 37.htmm List of measurable electrical units http www.lanl.gov safety electrical docs electrical measurement.ppt Electrical measurement safety manual http physics.kenyon.edu EarlyApparatus Titlepage Electrical Measurements.html Early electrical measurement equipment Further reading Graeme Gooday The morals of measurement accuracy, irony, and trust in late Victorian electrical practice , Cambridge University Press, 2004 ISBN 0521430984 Category Electromagnetism Category Electrical systems Category Physical quantities ... more details
Electrical material may refer to any of the following Metal s Semimetal s Semiconductor s Dielectric s Paramagnetic material s Electrical conductor s Electrical insulator s dab ... more details
Unreferenced auto yes date December 2009 See Equipment disambiguation Image Electrical switchgear.JPG thumb right 250px Electrical equipment part of the distribution system in a large building Electrical equipment includes any machine powered by electricity . They usually consists of an enclosure electrical enclosure , a variety of electrical component s, and often a power switch . Examples of these include Major appliance Microcontroller Power tool Small appliance s More specifically, often electrical equipment refers only to components part of the Electricity distribution electrical distribution system such as Electric switchboard s Distribution board s Circuit breaker s and disconnects Electricity meter Transformer s See also Portal Energy Commons category Electrical room Electrical Equipment in Hazardous Areas Grounding kit DEFAULTSORT Electrical Equipment Category Electrical engineering Category Electric power distribution Electric stub ar ... more details
Multiple issues wikify December 2010 orphan February 2009 Electrical Technologists are people that apply electrical theory on the job. Their knowledge and skill lies between that of electrical engineers and general electrical trades persons. They train in three year diploma programs at colleges or universities. Specializations within the field include instrumentation, power, telecommunications, programming and electronic controls. Electrical Technologists are employed by utilities, engineering drafting design companies, offshore refineries, and construction. Sources http techworks.asttbc.org profiles electrical.html TechWORKS Pathways to Career Success, ELECTRICAL TECHNOLOGY Online. September 25, 2007. http www.ssss.com Careers Calgary, 20Alberta Electrical 20Technologist default.htm Electrical Technologist Online. September 25, 2007. http www.kinectrics.com en employment jobs.cfm?id 62 Kinectrics Job Description, Electrical Technologist . Online. September 25, 2007. http alis.alberta.ca occinfo Content RequestAction.asp?aspAction GetHTMLProfile&format html&occPro ID 71002443&SNT ID 25 Electrical Engineering Technologist Alberta Occupation Profiles Category Electrical engineers Category Technologists pt Tecn logo em automa o industrial ... more details
Electrical Injury generally refers to material damage caused by electrical forces. This term is commonly used in medicine in reference to harmful effects of electric field exposure. The nature of the injury depends on the freguency and amplitude of the electric field, the duration of exposure, and the nature of the tissue involved. In most cases of harmful electric field exposure, nerve and muscle are most vulnerable to injury. Electrical shock may or may not produce electrical injury. Many static electrical shocks, such as that experienced when reaching for a door knob after walking across a carpet on a dry day, do not. Another example of electrical shocks not producing direct electrical injury is the application of electrical stun guns. These devices electrically stimulate nerve fibers producing severe pain and loss of neuromuscular control but the electrical current they deliver to the body does not usually cause direct electrical damage to tissues. Almost everyone has once in his or her lifetime been shocked by electricity. The fear reflex generated by the bad experience of pain usually prevents us from further tampering with electricity. However, no matter how careful, accidents do and will happen, especially among electrical workers who have to handle commercial electrical power lines everyday. Category Injuries ... more details
An electrical code is a set of regulations for electrical wiring . The intention of an electrical code is to provide standards to ensure electrical wiring systems that are safe and unlikely to produce either electric shock or Conflagration fires . Ways in which electrical codes ensure safety include ways to prevent or mitigate short circuit s, ground faults, and overheating from inadequate Electric current current carrying capacity ampacity . Appropriately rated Fuse electrical fuse s or circuit breaker s are used to interrupt a circuit loop whose ampacity is exceeded to avoid overheating of wires or other fixtures. Electrical codes are usually devised by national or international technical organizations, and adopted as law to make them enforceable. Electrical codes differ based on geographic area. See the following DIN VDE German Institute for Standardization published by DIN Norms is used in Germany National Electrical Code has been adopted for electrical wiring in North America electrical wiring in the United States and for Mexico, Costa Rica, Venezuela and Colombia IEC 60364 is used as a basis for electrical codes in many European countries Canadian Electrical Code published by the Canadian Standards Association CSA is used in Canada see Electrical wiring in North America . British Standard BS 7671 is the set of regulations for electrical wiring in the United Kingdom . NF C 15 100 fr NF C 15 100 fr is used for low voltage installations in France RGIE fr RGIE fr R glement G n ral sur les Installations lectriques is used for installations in Belgium. nl Algemeen Reglement op de Elektrische Installaties AREI nl AREI nl Algemeen Reglement Elektrische Installaties is used for installations in Belgium Flanders... See also Electrical wiring Category Electrical safety Category Fire protection Category Fire prevention es Reglamento Electrot cnico para Baja Tensi n Espa a nl NEN 1010 ... more details
Orphan date February 2009 Laser Electrical was a chain of electrical retail stores operating solely in Northern Ireland , similar to other UK chains such as Currys . It was the largest electrical chain operating exclusively in Northern Ireland, with ten stores. ref name BTel http www.belfasttelegraph.co.uk news local national no way back for laser electrical as the plug is pulled for good 14762377.html No way back for Laser Electrical as the plug is pulled for good , Belfast Telegraph , 10 April 2010 ref After operating since 1984, it went into administration through KPMG and subsequent liquidation in April 2010, having undergone a management buyout in 2004. ref http www.londonderrysentinel.co.uk news Laser electrical stores to close.6201330.jp Laser electrical stores to close , Londonderry Sentinel , 2 April 2010 ref ref McDonnell, Fraces 2010 http www.irishtimes.com newspaper finance 2010 0403 1224267617348.html Administrators appointed to Laser Electrical , Irish Times , 3 April 2010 ref ref http news.bbc.co.uk 1 hi northern ireland 8611694.stm 140 jobs lost at Laser Electrical , BBC News , 9 April 2010 ref Laser Electrical s e commerce website http www.laserdirect.co.uk was subsequently acquired by Armagh based electrical retailer Dalzell s of Markethill. ref http www.armaghelectrical.com blog 2010 06 dalzells of markethill have acquired laserdirect co uk Dalzell s of Markethill Have Acquired LaserDirect.co.uk , Blog The Dalzell s Daily , 20 June 2010 ref References Reflist Category Consumer electronics retailers of the United Kingdom retail company stub ... more details
Unreferenced stub auto yes date December 2009 An electrical connection between discrete points allows the flow of electron s electric current . A pair of connections is needed for a electrical network circuit . Between points with a low voltage difference, direct current can be controlled by a switch . However, if the points are not connected, and the voltage difference between those points is high enough, electrical ionization of the atmosphere will occur, and current will tend to occur along the path of least resistance . See also Electrical connector DEFAULTSORT Electrical Connection Category Electrical circuits Tech stub pt Conex o el trica ... more details
Unreferenced stub auto yes date December 2009 Image Electrical switchgear.JPG thumb 240px right Main electrical distribution room in a large building. An electrical room is a room or space in a building dedicated to electrical equipment. The size of the electrical room is usually proportional to the size of the building. In large buildings there may be a main and subsidiary electrical rooms. Electrical equipment may be for power distribution equipment, or for communications equipment. Electrical rooms typically house the following equipment Electric switchboard s Distribution board s Circuit breaker s and disconnects Electricity meter Transformer s Busbar s Backup battery Backup batteries in a Battery room Fire alarm control panel s Distribution frame s In large building complexes, the primary electrical room may even house an indoor electrical substation . Regulations The details of layout and construction of electrical rooms will be controlled by local building code and electrical code regulations. Requirements for an electrical room relate to fire safety and electrical hazards. An electrical room is usually required to be secured from access by unauthorized persons these rules are especially strict where equipment within the room has exposed live terminals. Regulations may require ... as an electrical vault . Since power distribution often requires large numbers of electrical cables ... electrical rooms may be prepared that have ventilation and other measures to prevent an explosion hazard that would otherwise exist with electrical equipment in hazardous areas . For large installations ... that are resistant to the hazardous conditions. Similarly, in wet or corrosive environments, electrical ... code and electrical code regulations will dictate minimal working space around equipment to allow for safe access for maintenance. Practical design of an electrical room will consider layout of the initial ... vault Enclosure electrical Room DEFAULTSORT Electrical Room Category Rooms Category Electric power ... more details
An electrical drawing , is a type of technical drawing that shows information about Electric power power , lighting , and communication for an engineering or architectural project . Any electrical working drawing consists of lines, symbols, dimensions, and notations to accurately convey an engineering s design to the workers, who install the electrical system on the job . ref name TB04 John E. Traister, Dale C. Brickner 2004 . Electrician s Exam Preparation Guide Based on the 2005 NEC . Craftsman Book Company, 2004. ISBN 1572181524 p.269. ref A complete set of working drawings for the average electrical system in large project s usually consists of ref name TB04 A plot plan showing the building s location and outside electrical wiring Floor plan s showing the location of electrical systems on every floor Power riser diagrams showing panel boards Control wiring diagram s Schedules and other information in combination with construction drawing s. Electrical drafter s prepare wiring and layout diagrams used by workers who erect, install, and repair electrical equipment and wiring in communication centers, power plants, electrical distribution systems, and buildings. ref name BLC07 Bureau of Labor Statistics . http www.bls.gov oco ocos111.htm Occupational Outlook Handbook, 2008 09 Edition Drafters dated 18 December 2007. accessed 24 September 2008. ref See also Architectural drawing Electronic schematic Engineering drawing Mechanical drawing Structural drawing Working drawing References reflist DEFAULTSORT Electrical Drawing Category Technical drawing engineering stub ... more details
File Electrical Alternans.JPG thumb 350px Electrical alternans as seen by changing QRS amplitudes best seen in lead II Electrical alternans is an electrocardiogram electrocardiographic phenomenon of alternation of QRS complex amplitude or Coordinate axis axis between beats and a possible wandering base line. It is seen in cardiac tamponade and severe pericardial effusion and is thought to be related to changes in the ventricle heart ventricular electrical axis due to fluid in the pericardium , as the heart essentially wobbles in the fluid filled precardial sac. ref name Antonio cite book title Clinical Arrhythmology author Antonio Bay s de Luna publisher John Wiley and Sons year 2011 page 351 url http books.google.com books?id imwpNCqooDQC&pg PA351&dq electrical alternans&hl en&ei oBbGTcfPO 6D0QGK952YCA&sa X&oi book result&ct result&resnum 3&ved 0CEgQ6AEwAg v onepage&q electrical 20alternans&f false ref Generally electrical alternans can be seen with tamponade, and narrow AV node AV junctional reenterant tachycardia with an accessory pathway such as WPW syndrome . A similar phenomenon, pseudo alternans , can be seen in bigeminal PVC in the PR interval, alternans pre excitation, and alternans bundle branch block . ref name Antonio For the most part however, the most serious condition to rule out is tamponade. See also Cardiac tamponade Electrocardiogram Sources references DEFAULTSORT Electrical Alternans Category Cardiac dysrhythmia Med stub ... more details
An electrical contractor is a business person or business entity firm that performs specialized construction work related to the design, installation, and maintenance of electrical systems a 130 billion industry in the United States . ref http www.necanet.org about ref An electrical contractor is different than an electrician an electrician is an individual tradesman and an electrical contractor is a business ... from insurance liabilities. These requirements vary from state to state. Electricians may work for an electrical contractor, or directly for individuals or companies. Industry Classifications Electrical ... facilities, buildings, and homes. Inside electrical contractors provide electricity to any structure ... specification guidelines, inside electrical contractors can serve as prime contractors for all electrical and cabling design, installation, and maintenance for commercial, institutional, and residential buildings. Integrated building systems IBS or Voice Data Video VDV electrical contractors ... energy efficiency and building performance. Industry Jobs Electrical contractors employ workers in many ... Kingdom , the three main trade association s are the National Inspection Council for Electrical Installation Contracting and Electrical Contractors Association , covering England, Northern Ireland and Wales, and SELECT the Electrical Contractors Association for Scotland . United States The National Electrical Contractors Association NECA is the largest trade association in the electrical ... convention and trade show. ref http www.necaconvention.org ?fa exhibitor ref Independent Electrical Contractors IEC is another trade association for electrical contractors with 70 chapters across ... program. The International Brotherhood of Electrical Workers organizes and represents over 700,000 members, and provides training and apprenticeship programs. Safety Electrical contractors in the United States are required to follow National Electrical Code NEC to ensure systems work in a safe ... more details
Image ElectricalTree1.jpg thumb A 3D Electrical Tree or Lichtenberg figure , imbedded within a 1.5 cube of Polymethyl Methacrylate Poly methyl methacrylate PMMA Within the field of electrical engineering , treeing is an electrical pre breakdown phenomenon. It is a damaging process due to partial discharge s and progresses through the stressed dielectric Insulator electrical insulation , whose path resembles the form of a tree. Occurrence and causes Electrical treeing first occurs and propagates when a dry dielectric material is subjected to high and divergent electrical field stress over a long period of time. Electrical treeing is observed to originate at points where impurities, gas voids, mechanical defects, or conducting projections cause excessive electrical field stress within small regions ... small electrical discharge s between the walls of the void. An impurity or defect may even result .... These defects further weaken the dielectric strength of the material, enhance the electrical stress ... electrical failure of the dielectric. This has been a long term failure mechanism for buried polymer ... of the dielectric. Electrical tracking, sometimes called dry banding , is a typical failure mechanism for electrical power insulators that are subjected to salt spray contamination along coastlines ... Tracking1.jpg thumb 2D carbonized electrical trees or tracking across the surface of a polycarbonate ... breakdown and operational failure of the device Electrical treeing or Lichtenberg figures also occur ... archive of the breakdown process. Types of electrical trees The electrical trees can be further ... and vented trees. ref cite book last Thue first William A. title Electrical Insulation in Power Systems ... in the insulation. Detection and Location of electrical trees Electrical trees can be detected and located ... collected during the measurement allows the location of insulation irregularities and electrical trees ... Detection and location of electrical trees by partial discharge measurement Category Dielectrics ... more details
File Electrical burn on hand.jpg thumb Electrical burn on hand An electrical burn is a burn that results ... due to electrical injures are reported in the United States, with a mortality rate of 3 5 ref name WB9 Electrical Injuries in Emergency Medicine. Medscape Reference. n.p. n.d. Web. 29 September 2011. http emedicine.medscape.com article 770179 overview . ref . Electrical burns differ from Burn thermal ... often tissues deeper underneath the skin have been severely damaged. As a result, electrical burns ... electrical factors that determine the severity of the damage caused by electrical burns voltage , amperage , and Electrical resistance resistance . The severity of the burn also depends on the pathway the current takes through the body ref name WB2 Electrical Burns Causes and Treatment. Anapol Schwartz .... http www.anapolschwartz.com practices burn injury electrical burns.asp . ref . Generally, the pathway ... blood vessels, nerves, muscle, then skin, tendon, fat, and bone ref name r1 Docking, P. Electrical ... 1999 121 30. Print. ref . As the body comes into contact with an electrical source, it becomes part of the electrical current. As such the current has a point of entry and an exit at two different points ... more extensive and explosive ref name r1 . It is hard to accurately diagnose an electrical burn ... is an Electrical Burn? Electrical Safety. n.p. n.d. Web. 29 September 2011. http www.electricalsafety.org what is an electrical burn . ref Causes and classification Electrical burns can be caused ... fingers into electrical sockets, and falling into electrified water. Lightning strike Lightning strikes are also a cause of electrical burns, but this is a less common event. ref name WBebi Electrical ... vol 17 num 1 text vol17n1p9.asp . ref With the advances in technology, electrical injuries are becoming ... overview a0102 . ref . One third of all electrical traumas and most high voltage injuries are job related, and more the 50 of these injures result from power line contact. ref name Wbei Electrical ... more details
Image electrostatic discharge.jpg thumbnail right 180px Electrical breakdown in an electric discharge showing the ribbon like Plasma physics plasma filaments from a Tesla coil . The term electrical breakdown ... can apply to the failure of an electrical network electric circuit . Alternatively, it may refer to a rapid reduction in the resistance of an electrical insulator that can lead to a Electric spark ... the current in a high power circuit. Electrical system failure The most common meaning is related ..., alternator failure, broken wires, blown fuse electrical fuse s, etc. Failure of electrical insulation The second meaning of the term is more specifically a reference to the breakdown of the Electrical insulation insulation of an electrical wire or other electrical component. Such breakdown usually ... causes the opening of a protective circuit breaker . Electrical breakdown is often associated with the failure ... in the electricity distribution grid. Electrical breakdown can also occur across the insulators ... arcing to nearby branches of trees. Under sufficient electrical stress, electrical breakdown can ... overstress a dielectric beyond its dielectric strength so as to intentionally cause electrical ... from an insulating state to a highly Electrical conduction conductive state. This transition is characterized ... protection for telecommunication and Power systems electrical power systems, and ignite fuel via spark plugs in many Internal combustion engine internal combustion engines . Mechanism Electrical breakdown ... is exceeded. Regions of high electrical stress can cause nearby gas to partially ionize and begin ... also Electrostatic discharge Electrostatic Discharge or in an electrostatic precipitator . Partial electrical .... If the voltage is sufficiently high, complete electrical breakdown of the air will culminate in an electrical ... filaments from a Tesla coil . Click image for detail If a fuse electrical fuse or circuit breaker fails ..., electrical welding of metals, or for metal melting in an electric arc furnace . Voltage current ... more details
An electrical machine is the generic name for a device that converts mechanical energy to electrical energy , converts electrical energy to mechanical energy, or changes alternating current from one voltage level to a different voltage level. Electrical machines as employed in industry fall into three categories according to how they convert energy. Generators convert mechanical energy to electrical energy. Motors convert electrical energy to mechanical energy. Transformer s change the voltage of alternating current. Generator main Electrical generator An electric generator is a device that converts mechanical energy to electrical energy. A generator forces electrons to flow through an external electrical circuit . It is somewhat analogous to a water pump, which creates a flow of water but does ... be described in either mechanical or electrical terms. In mechanical terms the Rotor electric rotor is the rotating part of an electrical machine, and the stator is the stationary part of an electrical machine. In electrical terms the armature is the power producing component of an electrical machine and the field is the magnetic field component of an electrical machine. The armature can be on either ... coils, thus sending power back to the electrical grid. The second type is Alternator synchronous ... magnetic DC current source . DC generator A DC generator produces direct current electrical ... motor An electric motor converts electrical energy into mechanical energy . The reverse process of electrical generators, most electric motor s operate through interacting magnetic fields and electrical ... to the motor by using internal commutation, stationary permanent magnets, and rotating electrical magnets ... magnet in the rotor, and stationary electrical magnets on the motor housing. A motor controller converts ... transfers electrical energy from one electrical network circuit to another through inductive .... This effect is called mutual induction . References Chapman, Stephen J. 2005. Electrical Machinery ... more details
Electrical Audio is a recording studio recording facility founded in Chicago, Illinois by musician and recording engineer Steve Albini in 1997. Hundreds of independent music projects have been recorded there. Founded during an era of increasing popularity for digital recording , Electrical Audio was unusual for using only analog recording technology, including mixing console s, tape recorder s and many outboard sound effect s. The rooms are also designed to offer natural reverberation rather than adding the quality in post production. In a 2007 post on the studio s message board, ref http www.electricalaudio.com phpBB3 viewtopic.php?f 4&t 30596 EA Forums Pro Tools and Digital Performer at Electrical ref the studio s technician Greg Norman revealed that the studio had acquired a Pro Tools rig for computer aided recording and editing, saying it had become as important to have as a piano . Norman also went on to write that Albini, who dislikes digital recording, won t be recording with Pro Tools . So don t ask him about it. ref http www.electricalaudio.com item.php?page 333&pic pictures 333 0.jpg Electrical Audio Equipment Bot generated title ref Studio layout Deleted image Image EAlayout.JPG frame left A plan view of Electrical Audio The facility was built by gutting an existing building and customizing the space to Albini s specifications, including walls made of adobe bricks shipped from New Mexico. ref Haines, Garrett, Behind the Gear Bill Skibbe and Jessica Ruffins Tape Op Magazine. Issue 44 Nov Dec 2004. P. 22. ref Electrical Audio comprises two separate studios, A and B. Studio A Studio A is the larger of the two studios and has three separate performance rooms. Center ... room runs a 36 input Neotek Series II console. File Electrical Audio Studio B.jpg thumb An image of Studio ... www.electricalaudio.com ElectricalAudio.com is Electrical Audio s home webpage. coord 41.939095 87.693751 ... States es Electrical Audio fr Electrical Audio ... more details
For other uses, see electric vehicle . For the electrical mobility of an electron or electron hole hole in solid state physics , see Electron mobility . Electrical mobility is the ability of charged particles such as electron s or proton s to move through a medium in response to an electric field that is pulling them. The separation of ions according to their mobility in gas phase is called Ion mobility spectrometry , in liquid phase it is called electrophoresis . Theory When a charged particle in a gas or liquid is acted upon by a uniform electric field , it will be accelerated until it reaches a constant drift velocity according to the formula math ,v d mu E math where math , v d math is the drift velocity m s math , E math is the magnitude of the applied electric field V m math , mu math is the mobility m sup 2 sup V.s In other words, the electrical mobility of the particle is defined as the ratio of the drift velocity to the magnitude of the electric field math , mu frac v d E math Electrical mobility is proportional to the net electric charge charge of the particle. This was the basis for Robert Millikan s demonstration that electrical charges occur in discrete units, whose magnitude is the charge of the electron . Electrical mobility of spherical particles much larger than the mean free path of the molecules of the medium is inversely proportional to the diameter of the particles for spherical particles much smaller than the mean free path, the electrical mobility is inversely ... mean free path. Applications Electrical mobility is the basis for electrostatic precipitation ... by exposing them to ions from an electrical discharge in the presence of a strong field. The particles acquire an electrical mobility and are driven by the field to a collecting electrode. Instruments exist which select particles with a narrow range of electrical mobility, or particles with electrical ... with the diameter of a singly charged spherical particle, thus the electrical mobility diameter ... more details
For other uses of Work in physics Work physics Work thermodynamics Electrical work is the work done on a charged particle by an electric field . This energy is similar to mechanical work in that the equation for electrical work is of the same form math W q int i f E cdot , dr math where q is the electric charge charge of the particle E is the strength of the electric field r is the distance The electric field is essentially the force per unit electric charge charge , and hence by multiplying the charge by the separation between positive and negative regions of field, the work per unit charge is obtained. It requires positive external work to move a positive charge into a region possessing a higher value of volt voltage . This is because external work is needed to be done against the electric field field of the electric force. Similarly, it requires positive external work to transfer a negatively charged particle from a region of higher voltage to a region of lower voltage. Under normal circumstances, positively charged particles that are free to move will always tend to shift towards the direction of lower voltages. In contrast to this behavior of positive charges, particles that are negatively charged tend to shift towards regions that possess higher voltage. The electric work which is done by an electric field is independent of the Path topology path followed by the carriers of charge. There is no change in the voltage around any closed path this fact is brought out by the observation that when returning to the starting point in a closed path, the net of the external work done is zero. The same phenomenon holds good for electric fields as well. The fact explained above forms the basis of one of the most fundamental laws governing electrical and electronic circuits, the Kirchoff ... that occur around any electrical circuit loop is always equal to zero. See also http www.articleworld.org index.php Electrical work Electrical work introduction Category Electromagnetism ar ... more details
original research date August 2009 unreferenced date August 2009 Image Electrical tape black.jpg thumb right 225px Electrical tape, standard black Electrical tape or insulating tape is a type of pressure sensitive tape used to Electrical insulation insulate electrical wire s and other material that conduct electricity . It can be made of many plastic s, but vinyl is most popular, as it stretches well and gives an effective and long lasting insulation. Electrical tape for Insulation system class H insulation is made of fiberglass cloth. Varieties File Isolierband 0067.JPG thumb A selection of color coded electrical tapes. A wide variety of electrical tapes is available some for highly specialized purposes. Electrician s generally use only black tape for insulation purposes. The other colours are used to indicate the voltage level and Polyphase system phase of the wire. In fact, the coloured tape is referred to as phasing tape . This is done on large wire which is available only in black insulation. When wires are phased, a ring of tape is placed on each end near the termination so that the purpose of the wire is obvious. The following table describes this usage. class wikitable Tape colour Usage US Usage UK old Usage International new Black Insulation br Low voltage, phase A Insulation ... for electrical applications will carry an approval label from an agency such as Underwriters Laboratories . Non electrical applications File .jpg thumb L Symbol is fixed .... It can be torn by hand or cut with tools. History refimprove date January 2011 The original electrical ... made of vinyl film that would have the required electrical, physical and chemical properties. Experiments ... 1946, inventors Snell, Oace, and Eastwold of 3M applied for a patent for a vinyl electrical ...?66666UuZjcFSLXTtMxMy58&aEVuQEcuZgVs6EVs6E666666 Electrical Taping Skills A Lost Art? http www.eham.net articles 5067 Electrical Tape Tips by K FF ASTM D1000 Test methods for electrical tapes Category ... more details
Mergeto Computer aided design date March 2010 Electrical CAD refers to Computer software software packages that allow an electrical engineer to create and manage electrical schematic s. Advanced packages will not only manage electrical schematics, but also integrate functionalities such as cabinet and panel lay outs and terminal management. The benefit of using E CAD solutions is to create harnesses using among logic information provided from the user geometrical information from the CAD system. Electrical components within any kind of construction need to be connected with harnesses. This can be components like PCBs printed circuite boards , controls, drives, gauges or any other kind which has to be connected either to just provide electrical energy or to exchange information. These components are located anywhere in the construction and the harness has to connect them with their correspondents. First, of course, the harness needs to reach all electrical components using a defined path. The path should be defined early in the conception phase to avoid intersections. Second, the harness underlies environmental conditions, like heat, humiditiy or chemical aggressive substances in certain zones. Finally, each wire terminates in a connector who fits to the environmental conditions, too. Connectors are also necessary to break a harness into two parts for physical reason. Example The interior of a car door is connected to the other harness after mounting the pre equipped door. In the E CAD solution, the electrical logic will be defined parallel to the space reservation made in a 3D CAD system if any . In a following step the defined wires are auto routed to join the logic with the predefinition. This step is mostly to take the length information coming from M CAD into account. Then, protections have to be added or wires have to be defined according the environmental conditions ... are even becoming Product Lifecycle Management packages as they allow to manage the entire electrical ... more details
Electrical polarity positive and negative is present in every electrical circuit . Electron s flow from the negative pole to the positive pole. In a direct current DC circuit, one pole is always negative, the other pole is always positive and the electrons flow in one direction only. In an alternating current AC circuit the two poles alternate between negative and positive and the direction of the electron flow continually reverses. Positive and negative In DC circuits, the positive pole is usually marked red or and the negative pole is usually marked black or , but other color schemes are not uncommon in automotive and telecommunications systems. On a car battery , the positive pole is fatter, having a larger diameter than the negative pole. In AC systems which are at no point connected to earth unlike domestic mains wiring where the neutral is commonly earthed at substations and generators polarity is not important as the two wires alternate polarity many times per second. Ground earth Modern automobile cars have a negative earth electrical system. In this case the negative terminal of the battery is bonded to the vehicle s chassis the metallic body work and the positive terminal provides the live wire to the various systems. However, some older cars were built with a positive earth electrical system, in this case the positive terminal of the battery is bonded to the chassis and the negative terminal for the live. See also Anode Cathode Electric charge Polarity symbols Polarity physics Dot convention Category Electricity Electric stub cy Polaredd trydanol es Polaridad electricidad it Polo elettrotecnica ... more details
Infobox Magazine title Electrical Experimenter image file Electrical Experimenter Aug 1916 Cover.png image size image caption Electricity Lighting Liberty, August 1916 editor Hugo Gernsback editor title previous editor staff writer frequency Monthly circulation category Science company Experimenter Publishing publisher Hugo Gernsback firstdate May 1913 finaldate July 1920 finalnumber Vol 8 No 3 country USA based language English website issn The Electrical Experimenter OCLC 8740783 was a technical science magazine that was published monthly. It was first published in May 1913, as the successor to Modern Electrics , a combination of a magazine and mail order catalog that had been published by Hugo Gernsback starting in 1908. ref name mp Cite journal last1 Massie first1 Keith last2 Perry first2 Stephen D. title Hugo Gernsbeck and Radio Magazines An Influential Intersection in Broadcast History journal Journal of Radio Studies volume 9 issue 2 year 2002 pages 264 282 url http home.utah.edu u0202363 hugo pub.pdf postscript None . ref The Electrical Experimenter continued from May 1913 to July 1920 under that name, focusing on scientific articles about radio , and continued with a broader focus as Science and Invention until August 1931. ref name mp The magazine was edited by Hugo Gernsback until March 1929, when the publishing empire of Sidney and Hugo Gernsback was Experimenter Publishing bankruptcy forced into bankruptcy after that date it was edited by Arthur H. Lynch . ref http www.philsp.com data data104.html Magazine Data File Electrical Experimenter ref Under the editorship of Gernsback, it also published some early science fiction he published several of his own stories ... electrical experimenter, worthy of the name must have imagination and a vision for the future. ref ... Development , The Electrical Experimenter , January, 1917 Category Publications established in 1913 ... of the United States Category Science and technology magazines es Electrical Experimenter ru Electrical ... more details
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