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Topic: Mains electricity


  
  Mains electricity - Wikipedia, the free encyclopedia
The term "mains" usually refers to the general purpose AC electrical power supply (as in "I've connected the appliance to the mains").
In Japan, the electrical power supply to households is at 100 V. Eastern and northern parts of Honshu (including Tokyo) and Hokkaido have a frequency of 50 Hz, whereas western Honshu (including Nagoya, Osaka, and Hiroshima), Shikoku, Kyushu and Okinawa operate at 60 Hz.
The system of three-phase alternating current electrical generation and distribution was invented by Nikola Tesla in the 19th century.
en.wikipedia.org /wiki/Mains_electricity   (836 words)

  
 Electricity Encyclopedia Article @ LaunchBase.org (Launch Base)   (Site not responding. Last check: 2007-10-07)
Electricity is responsible for many well-known physical phenomena such as lightning, electric fields and electric currents, and is put to use in industrial applications such as electronics and electric power.
Electric charge is a property of certain subatomic particles (e.g., electrons and protons) which interacts with electromagnetic fields and causes attractive and repulsive forces between them.
In this sense, the phrase "quantity of electricity" is used interchangeably with the phrases "charge of electricity" and "quantity of charge." There are two types of charge: we call one kind of charge positive and the other negative.
www.launchbase.org /encyclopedia/Electricity   (1460 words)

  
 [No title]   (Site not responding. Last check: 2007-10-07)
tricity from the mains supply to the place of consumption and for the metering of the consumption of electricity, the electricity distribution board and the electricity meter are separate units.
An electricity distribution board according to claim 1 or 2, c h a r a c t e r i z e d in that the distribu- tion terminal block is arranged separately in a housing with a cover which is sealable.
A distribution terminal block for use in an electric- ity distribution board according to claims 1-4, c h a r a c t e r i z e d in that it is constructed as a housing with a sealable cover.
www.wipo.int /cgi-pct/guest/getbykey5?KEY=99/45616.990910&ELEMENT_SET=DECL   (1408 words)

  
 mains electricity - Hutchinson encyclopedia article about mains electricity
In the UK, electricity is supplied to houses, offices, and most factories as an alternating current at a frequency of 50 hertz and a root-mean-square voltage of 230 volts.
An advantage of having an alternating supply is that it may easily be changed, using a transformer, to a lower and safer voltage, such as 9 volts, for operating toys and for recharging batteries.
This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
encyclopedia.farlex.com /mains%20electricity   (155 words)

  
 Electricity in Spain   (Site not responding. Last check: 2007-10-07)
The majority of Electricity in Spain is supplied at 220 volts AC with a frequency of 50 cycles per second.
Spanish electricity is said to be expensive in comparison to the price charged by other EU countries.
Electricity is supplied on the basis of a sliding standing charge which is determined by the power made available to you and which in theory you should be able to draw at any time.
www.spanishpropertyco.com /61.htm   (1362 words)

  
 BA Hons, Primary Education
When the gap is closed electricity can flow through the circuit, when the gap is open (the switch is off) the circuit is broken and no electricity can flow.
Mains electricity differs in two main ways to the electricity produced by batteries.
If you consider your mains supply, the chances are that you live some distance away from the generator which supplies your electricity.
www.newi.ac.uk /buckleyc/electric.htm   (2443 words)

  
 Assessing your needs
The majority of households in the UK receive 'mains' electricity via the National Grid; this provides an inexpensive and reliable supply of as much or as little electricity as is required.
However, mains electricity tends to be produced at the expense of the environment - causing global warming, acid-rain, and nuclear waste.
'mains style' electricity is required and there is no grid connection, an inverter may be used to convert the d.c.
www.ecocentre.org.uk /assessing-your-needs.html   (1002 words)

  
 [No title]   (Site not responding. Last check: 2007-10-07)
An electrical generator can be started in isolation until it reaches suitable power quality and the appropriate frequency and phase, and then connected to the mains electricity supply.
However, the provision of a control device to monitor the power quality of a generator and then connect the generator to the mains electricity supply when the appropriate power quality has been achieved is expensive, increases the complexity of the device and is liable to error.
When disconnecting the electrical generator from the mains electricity supply, arcing is produced between the contacts of the switch used for disconnection.
www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/69078.010920&ELEMENT_SET=DECL   (3320 words)

  
 Circuits. Energy and volts.   (Site not responding. Last check: 2007-10-07)
Electric current is the same all the way around the circuit.
The mains electricity is at 230 V. You should never try to measure this yourself.
In some cases the source uses an electric current to carry the energy to where it is needed.
www.schoolscience.co.uk /content/3/physics/circuits/circh1pg4.html   (416 words)

  
 10   (Site not responding. Last check: 2007-10-07)
Mains electricity can kill if it is not used safely.Most electrical appliances are connected to the mains using cable and a 3-pin plug.
As an electric current flows through a circuit, energy is transferred from the battery or power supply to the components in the electrical circuit.
Electricity can be generated by rotating a coil of wire in a magnetic field or by rotating a magnet inside a coil of wire.
learningat.ke7.org.uk /scienceweb/GCSE/Electricity/elec.htm   (2154 words)

  
 EDF Energy Power Up! > Night Night > Page 2 : Mains Electricity
Every electrical appliance that connects to mains electricity has a fuse, usually in the plug.
The electricity flows through wires that come out of the circuit breaker and all around the house, to the lights and the plugs.
Mains electricity (the electricity that comes through the plugs in your house) is much more dangerous than the electricity produced by torch batteries because it is more powerful.
www.edfenergy.com /powerup/keystage2/night/page2.html   (403 words)

  
 DIY hi-fi - Optimising power supplies
Electricity is carried along cables, all the way from the power station (which may be many miles away) to your home.
The electrical signal which is produced by the source component is tiny and needs to be amplified in order to be strong enough to drive the loudspeakers.
In their most simple forms, mains conditioners are some sort of electrical filter, designed to remove the spikes and other nasties from the AC supply.
myweb.tiscali.co.uk /nuukspot/decdun/powersupplies.html   (2892 words)

  
 Mains - Wikipedia, the free encyclopedia
Mains may mean or refer to, or be a subject of:
Mains electricity ("line power" in the United States)
Mains (Scotland), about the central steading of a townland
en.wikipedia.org /wiki/Mains   (114 words)

  
 Electricity : Using mains power for electromagnet experiment   (Site not responding. Last check: 2007-10-07)
Mains power from domestic electrical outlets could power an electromagnet, but DO NOT TRY IT - it can be very dangerous.
Mains voltage can cause injury or death from electric shock.
The SEED Build an electromagnet experiment and Engineering Challenge use a single 1.5 volt battery, which is quite sufficient for a science experiment at home.
www.seed.slb.com /qa2/FAQView.cfm?ID=557   (119 words)

  
 DTI Report
The solar electric pumped solar water hearing system, which was included in the study only at the last minute because of its relative newness, uses no parasitic mains power at all.
Nearly all solar water heating systems use mains electricity not only for measuring water temperatures but also for pumping the water through the solar panels whenever the sun heats it.
Electricity consumption is damaging to the environment because mainly "high carbon" fossil fuels are used in its production, and furthermore, they are used rather inefficiently, as well.
www.heavens-solar.com /dti_report.htm   (702 words)

  
 ePanorama   (Site not responding. Last check: 2007-10-07)
Electrical codes codes around the world require wire that is well insulated, right size for the application (generally thick enough that it does not heat too much), has enough physical protection for the application and has right wire colors in it.
For a number of years it hadbeen known that electrical workers that were in close proximity to very strong magnetic or electric fields sometimes "saw" flashing lights or patternsthat were supposed to be due the action of these fields on the nervous system.
Electrical safety grounds: Probably the most fundamental of all grounds, these are required by code to protect people from injury in the event of a short or "fault" that puts current onto an equipment housing.
www.epanorama.net /links/wire_mains.html   (17418 words)

  
 Living On Boats Blog: November 2005 Newsletter
One plugs into the mains supply and one plugs into the boats mains electricity system if it is fitted with one.
All is not lost as their are ways to provide mains electricity while cruising or living on a mooring without mains power.
The mains power on your boat is the same as that supplied to a house so treat it the same and follow all the normal safety precautions.
livingonboats.blogspot.com /2005/11/november-2005-newsletter.html   (1595 words)

  
 "); NewWindow.document.write("IRINnews"); NewWindow.document.write("   (Site not responding. Last check: 2007-10-07)
Several officials of the Liberia Electricity Corporation said privately that a delegation from a Ghana-based power company had visited Monrovia in June to inspect the city's wrecked electricity infrastructure with a view to rehabilitating it as a commercial investor.
The European Union tried to restore mains electricity to part of the city in November last year by repairing an old diesel generator and supplying fuel to run it.
Maya told IRIN that electricity supplies could be restored to most of the city of one million people within a year at an estimated cost of $14 million, but it was now clear that this task would have to be undertaken by private investors.
irinnews.org /report.asp?ReportID=42570&SelectRegion=West_Africa&...   (562 words)

  
 Mains Electricity   (Site not responding. Last check: 2007-10-07)
An electric cooker is connected to the mains electricity supply.
A microwave cooker is fitted with a plug that connects it to the mains electricity supply.
A percolator is fitted with a plug that connects it to the mains electricity supply.
www.zephyrus.co.uk /mainselectricity.html   (69 words)

  
 EDF Energy Power Up! > Celldric’s House > Page 2 : Things That Use Electricity
Mains electricity is very powerful and can be dangerous.
You need to follow the safety rules when you use mains electricity, as you could be badly hurt or even killed if you don’t.
Let’s see if you can tell the difference between objects that are powered by mains electricity and those that use batteries.
www.edfenergy.com /powerup/keystage2/house/page2.html   (139 words)

  
 BBC NEWS | Programmes | Click Online | Home network on electricity wires
But the raw electricity is prevented from travelling up the data cable and into your computer, or your hand, by isolation transformers.
That means that using the mains as a home network could interfere with your enjoyment of shortwave radio, which is used by lots of broadcasters around the world, including the BBC World Service, and air traffic control.
It could spread along the mains to any other nearby houses which use the same run of mains cable.
news.bbc.co.uk /1/hi/programmes/click_online/4080566.stm   (912 words)

  
 Electricity Around the World   (Site not responding. Last check: 2007-10-07)
Most electrical power systems are prone to slight variations in voltage due to demand or other factors.
The electric power frequency is shown in the number of hertz (cycles per second).
Plug type F can sometimes be used but with reservation because in many places the mains outlet will not allow to connect such plug as the outlets have smaller hole diameters than F-plug pins.
kropla.com /electric2.htm   (1424 words)

  
 Emergency Power   (Site not responding. Last check: 2007-10-07)
If want to be independent of mains power for an extended period, or indefinitely, the practical answer for most of us is "no".
A: Look at your electricity bills for the past several months to determine your current usage for various times of the year.
To most survivalists, its main interest is that it can act either as a DC generator or a motor if feed power to it, which could be useful in some situations.
www.bagelhole.org /drafts/Emergency_Power.html   (1959 words)

  
 BBC - GCSE Bitesize - Physics | Electricity and magnetism | Mains electricity
The mains electricity supply works at 230Volts a.c.
This voltage means that an electric shock from the mains supply can be very dangerous, so we have to be especially careful that electrical items are wired up properly.
Moving electric charges, for example, electrons moving through a metal wire.
www.bbc.co.uk /schools/gcsebitesize/physics/electricity/mainselectricityrev1.shtml   (138 words)

  
 Newsletter   (Site not responding. Last check: 2007-10-07)
It is the main trading and service center for the surrounding district of Sirohi and is also a tourist destination.
Grid or mains electricity is supplied only to the town and its immediate environs.
While the lack of adequate electricity remains a major issue for this area, potential solutions can be found close at hand.
www.renewingindia.org /newsletters/resource/past/vol10/res_oct_015.htm   (1063 words)

  
 Mains Electricity   (Site not responding. Last check: 2007-10-07)
Fuses are used in plugs to protect electrical appliances from receiving too high a current and to protect users from a potentially fatal electric shock.
The fuse must be in the live arm of the circuit and therefore is between the live wire and the appliance.
The unit of electrical energy transferred is the kilowatt-hour (kWh).
homepages.enterprise.net /chrsctakeley/learning/physics/electricityandmagnetismhousehold.htm   (787 words)

  
 mains   (Site not responding. Last check: 2007-10-07)
Mains electricity ("line power" in the United States); Electricity transmission · Public utility,...
The mains electricity supply works at 230Volts ac This voltage means that an electric shock from the mains supply can be very dangerous, so we have to be...
Highly unusual collective Mains Ignition are a bit like The Stones, The Upsetters,...
www.hotvsnot.com /search/?s=mains   (268 words)

  
 [No title]
It introduces children to the hazards associated with mains electricity.
identify appliances which use electricity eg lamp, tape recorder, television and those which do not eg pencil-sharpener, stapler record the appliances in categories and justify the groupings eg say that the tape recorder and the radio both make sounds The scientifically correct term for a single ‘battery’ is a cell.
that everyday appliances are connected to the mains and that they must be used safely Show a video or video clip about electrical safety and talk with children about dangerous and less dangerous sources of electricity.
www.standards.dfes.gov.uk /local/schemes/docs/sci2f.doc   (888 words)

  
 Essay or Coursework : Mains Electricity.
When people first started looking carefully at what electricity was they decided it was something to do with particles carrying charge in a wire.
They decided that they thought positive particles started at the positive side of a circuit and worked their way around until they reached the negative side of the circuit.
It was sometime later though that they discovered that these particles were electrons and that they were negatively charged.
www.coursework.info /i/51247.html   (309 words)

  
 Bagelhole.org Information Center for Low-tech sustainability   (Site not responding. Last check: 2007-10-07)
If talking about lots of electric heating, cooking, and hot water, water pumping, etc. then probably not.
To get an idea of how much a kilowatt is, look at the wattage rating on a simple electric radiant heater.
When you have read the rest of this post you may probably want to start thinking how you can cut down on usage of electricity, which means knowing just how much various appliances use.
www.bagelhole.org /article.php/Survival/83   (2048 words)

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