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Topic: Mains (electric power)

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	Electric power - Wikipedia, the free encyclopedia
		Electric power, often known as power or electricity, involves the production and delivery of electrical energy in sufficient quantities to operate domestic appliances, office equipment, industrial machinery and provide sufficient energy for both domestic and commercial lighting, heating, cooking and industrial processes.
		Although electricity had been known to be produced as a result of the chemical reactions that take place in an electrolytic cell since Alessandro Volta developed the voltaic pile in 1800, its production by this means was, and still is, expensive.
		For this reason, electric power is viewed as a natural monopoly.
	en.wikipedia.org /wiki/Electric_power (758 words)

	Mains - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-11-06)
		The term mains usually refers to the domestic electrical power supply (as in "I've connected the appliance to the mains").
		The system of three-phase alternating current electrical generation and distribution was invented by a nineteenth century creative genius named Nikola Tesla.
		Electric motors are much less efficient at the lower frequency, and must also be made more robust to handle the electrical losses and the extra heat generated.
	www.encyclopedia-online.info /Mains (717 words)

	Mains - Pictures (Site not responding. Last check: 2007-11-06)
		The term mains usually refers to the domestic 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) as well as 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 nineteenth century.
	www.greatestinfo.org /Mains (745 words)

	Electric power - Pictures (Site not responding. Last check: 2007-11-06)
		Although electricity had been known to be produced as a result of the chemical reactions that take place in an electrolytic cell since Alessandro Volta reported doing so in 1800, its production by this means was, and still is, expensive.
		In 1831, Michael Faraday devised a machine that generated electricity from rotary motion, however it took almost 50 years for the technology to reach a commercially viable stage.
		The need for additional power plants is primarily explained by Ohm's law : as losses increase in proportion to the square of the current, or load, and in proportion to the resistance, having long cable runs in the Edison system meant using dangerous voltages in some places, or expensive and large cables or both.
	www.greatestinfo.org /Electric_power (710 words)

	Red Snap'r - Electric Fence Energiser Choices
		Solar powered systems are increasingly popular and involve the use of a battery powered unit used in conjunction with a solar panel.
		Your assurance that your mains powered energiser is approved is the approval number on its label.
		Mains energisers are easier and more economical to run as there are no batteries to maintain.
	redsnapr.co.nz /choices.html (1106 words)

	Mains outage \| Energyst CAT ® Rental Power (Site not responding. Last check: 2007-11-06)
		The boat power rental seattle From single power generator installations up to multi-megawatt power plants, Energyst provides the planners, project managers, site-managers, technicians, and equipment to ensure that the Power Generation solution you receive meets your requirements and operates to your planned specifications.
		The boat power rental seattle One of the cornerstones of Caterpillar's approach to developing engine technology is advancing the principle of reliability and operating efficiency.
		The boat power rental seattle An example of this is the industry leading Cat ACERTTM technology, representing a significant advancement in fuel efficiency and environmental safety.
	ww1.energyst.com /mainsoutage.htm (356 words)

	Electric lawn mowers
		Electric mowers should always be used with an RCD and should not be used on wet grass.
		Electric mowers are best suited to smaller, more compact garden as then the flex does not need to be so long, they are also less likely to overheat than if used over an extensive area.
		Battery powered mowers do have their place for particular circumstances, but until the technology develops they won’t be replacing petrol or mains electric machines for a while yet.
	www.angliangardener.co.uk /lawncare/lawn_mower_electric.htm (836 words)

	Basics about electrosmog (electric and electromagnetic rays/fields) (Site not responding. Last check: 2007-11-06)
		Electric fields occur whenever a voltage difference occurs, therefore electric fields are emitted from appliances which are plugged in even if they are switched off.
		The main sources of AC magnetic fields in a home are transformers, motorised equipment, sloppy wiring inside the house walls, excess current carried by plumbing, and powerlines or underground power cables.
		Mains Disconnection Relays are a simple yet effective and highly elegant way to omit Electro-Smog from installed power cables, WITHOUT expensive rewiring of the affected areas by using screened cables.
	www.emf-meter.com /what-is-electrosmog.htm (1425 words)

	Power lines (Site not responding. Last check: 2007-11-06)
		Electrical power lines generate strong electric and magnetic fields, at the mains frequency of 50 or 60 cycles per second.
		If you live near a power line and run a loop of wire round your loft, the magnetic field is so powerful that you can tap off enough electric power for your household needs - and because it is free, you would effectively be stealing from the power company and would be breaking the law.
		Power induced fields in your home can be reduced by careful rerouting of wires and lining of structural surfaces with shielding foil.
	www.queenhill.demon.co.uk /radiation/sources/power.htm (537 words)

	ePanorama (Site not responding. Last check: 2007-11-06)
		Electrical power is a little bit like the air you breathe: You don't really think about it until it is missing.
		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.
		Electricity is measured in units of power called watts (named to honor James Watt, the inventor of the steam engine).
	www.epanorama.net /links/wire_mains.html (16998 words)

	Mains - Art History Online Reference and Guide
		Mains (sometimes just main) refers to the interconnected cables or pipes carrying a service to households and businesses, and to the service they supply.
		Mains services are natural monopolies and therefore governments (either local or national) are usually heavily involved in their provision.
		A special type of mains are traction power networks for the supply of electric trains with traction current used in Germany, Austria, Switzerland and some areas around New York.
	www.arthistoryclub.com /art_history/Mains (280 words)

	Electricity Around the World (Site not responding. Last check: 2007-11-06)
		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)

	Consulting on Surges & Electric Power Problems
		Electrical surges are transient overvoltages that are conducted on wires and cause damage to computers, modems, electronic equipment, and even electrical motors.
		The power supply in the Austin had been failing intermittently for at least eight days before it permanently failed, and none of these failures occurred during local thunderstorms, so I suspect that it was merely a defective product.
		The power supply in the disk drive enclosure was not damaged, only the hard drive was replaced, which suggests that the problem was not the result of disturbances on the ac supply mains.
	www.rbs2.com /pq.htm (2026 words)

	Power Fencing - Electric fence security repairs and installations (Site not responding. Last check: 2007-11-06)
		The Electric Fence, in it's standard form, can be installed as a stand-alone system, or directly interfaced with any other type of intruder alarm, access control or integrated security system.
		Therefore, a standard 6 zone Power Fence control can be used for the protection of perimeter fencing from zero to 3 kilometres in length.
		The Electric Fence alarm and zone alarm outputs can be used to trigger and/or operate all forms of alarm monitoring, or signalling systems.
	www.powerfencing.com.au /faqs.htm (1274 words)

	Mains electricity - Enpsychlopedia (Site not responding. Last check: 2007-11-06)
		The term mains usually refers to the general purpose AC electrical power supply (as in "I've connected the appliance to the mains").
		ANSI standard C84.1 and Canadian CAN3-C235 specify that the nominal voltage at the output should be 120 V and allows a range of 114 to 126 V. California deliberately runs in the voltage range 114 to 120 V to reduce power consumption, however the reasoning behind such a move is debatable.
		A device at 120 V draws twice as much current as a device with the same power draw at 240 V. domestic clothes dryer requires 12.5 A at 240 V or 25 A at 120 V. The end result is that wiring must be larger, and each outlet supplies less power.
	www.grohol.com /psypsych/Mains_(electric_power) (794 words)

	1997 NAICS Definitions: 221 Utilities
		Industries in the Utilities subsector provide electric power, natural gas, steam supply, water supply, and sewage removal through a permanent infrastructure of lines, mains, and pipes.
		The electric energy produced in these establishment is provided to electric power transmission systems or to electric power distribution systems.
		This U.S. industry comprises electric power establishments primarily engaged in (1) operating electric power distribution systems (i.e., consisting of lines, poles, meters, and wiring) or (2) operating as electric power brokers or agents that arrange the sale of electricity via power distribution systems operated by others.
	www.census.gov /epcd/naics/NDEF221.HTM (644 words)

	electric drill: Choosing an electric drill - the basics (Site not responding. Last check: 2007-11-06)
		Electric drill - for the diy'er an electric drill is probably the first power tool to buy.
		The various types available and their uses - from hand drills to electric drill presses, mains electric to cordless.
		With a power drill, grinder stones and a bottle of bleach, you can distress jeans and add character to any denim project.
	www.qgcnet.com /electric-drill.html (320 words)

	Island Regulatory and Appeals Commission (IRAC), Prince Edward Island, Canada
		In order to insure the ready replacement of parts and the easy installation of replacements and additions and the efficient operation of its systems, no public utility, without the approval of the Commission, shall install any equipment, fixtures or appliances which are not of a uniform design and the product of a standard manufacturer.
		E-3, no person who, at the date of the coming into force of this section, is in actual receipt of the service of electric energy from a public utility, shall at any time after that date have that service from the public utility disconnected, or terminated without his consent.
		The rights and powers granted to any public utility by section 43 are in addition to, and not in substitution for the rights and powers possessed by that public utility under any other Act.
	www.irac.pe.ca /document.aspx?content=legislation/ElectricPowerAct.asp (4034 words)

	Primary Mains
		Secondary mains or circuits are the lines that carry the electric power from the secondary side of the transformer through a distribution system to supply the electrical loads.
		If a number of buildings in the area require three-phase power, cluster mount may be installed with the three-phase secondaries extending in two or three directions and with service drops extending from the secondary to the buildings.
		However, where it is desired to know how much electricity is being consumed, a meter is installed ahead of the main switch to the building.
	www.tpub.com /inteng/2d.htm (525 words)

	ASRP \| Exhibits \| VTTV-Omsk-99 (Site not responding. Last check: 2007-11-06)
		The system can operate as a main or reserve power source in no-mains conditions.
		Remote turning on and off any power sets at the distance of 10km and voltage supply from the power set generator to the user;
		Remote turning on and off any power sets at the distance of 10 km and voltage supply from the power set generator to the User;
	www-dos.rbs.ru /vttv/99/Firms/Irtysh/e-asrp.htm (176 words)

	Gardening-UK, gardening, Mowers, Line Trimmers, Brushcutters, Chainsaws, Hedge Trimmers, Post Hole Borers, Leaf Blowers ... (Site not responding. Last check: 2007-11-06)
		Powered by robust 32cc engine MAKITA's Top Handle Chainsaw is rated at 1.34hp and built to withstand everyday use in harsh, forestry environments.
		The new Power Cutter is designed around an ergonomic concept of 'man and machine in line' - the Disc Cutter becoming a natural extension of the operator's arms when in use.
		This powerful Disc Cutter is driven by a new high torque 62cc engine developing 3.3kw at 9000 rpm, specifically designed to meet the performance criteria required for cutting applications using either resin bonded wheels or diamond cutting blades.
	www.gardening-uk.co.uk /Saltex/makita.htm (1686 words)

	Power Standards Lab - SEMI F47, SEMI E6, Power quality, sag generators
		We specialize in equipment for electric power quality immunity, and we provide third-party test and certification services for SEMI F47, SEMI E6, IEC 61000-4-11, IEC 61000-4-34, and IEEE 1100.
		We are the world-wide leader in SEMI F47, SEMI E6, IEC 61000-4-11 and 61000-4-34, and IEEE 1100, the semiconductor industry voltage sag standards for power disturbance immunity.
		Power disturbance generators take good, clean electric power, and foul it up.
	powerstandards.com (278 words)

	2002 NAICS Definitions: 221 Utilities
		Establishments primarily engaged in generating electric energy are classified in Industry 22111, Electric Power Generation.
		This U.S. industry comprises electric power establishments primarily engaged in either (1) operating electric power distribution systems (i.e., consisting of lines, poles, meters, and wiring) or (2) operating as electric power brokers or agents that arrange the sale of electricity via power distribution systems operated by others.
		Transmitting electricity between generating sources or distribution centers--are classified in U.S. Industry 221121, Electric Bulk Power Transmission and Control.
	www.census.gov /epcd/naics02/def/NDEF221.HTM (895 words)

	From Wind to Electric Power
		The earliest example of a mechanical water-lifting device was the bucket-wheel, which has been in use in Egypt for thousands of years, usually powered by an ass.
		stations in case there should be a &#39;mains'; power failure.
		Additionally, some electric pumps are fitted with a gearbox, to enable them to be powered by a farm tractor in extreme emergency.
	www.prickwillow-engine-museum.co.uk /learning/power.html (536 words)

	Electric Power Distribution (Site not responding. Last check: 2007-11-06)
		Electricity Act: Subsidies switched on, plug won't be pulled on...
		Newindpress, India -Under the crucial change agreed upon, the Power Ministry is set to modify or even scrap the section pertaining to elimination of cross-subsidies between...
		Electric Power Distribution news vertical portal can now be syndicated quickly and easily using our new Really Simple Syndication feeds.
	electricpowerdistribution.productfinder.com /section_1079_75.html (261 words)

	EWA Ltd. - Switchboard Plants for Diesel Power Aggregates (Site not responding. Last check: 2007-11-06)
		Mains circuit breaker switch off and generator circuit breaker switch on.
		Automatic mains substitute operation up to 8 modules inclusive load release / load connection (serial synchronisation of individual modules and associated releases of the different load degrees).
		In many cases the control for accessory supplies or the entire power filed (inclusive circuit breakers and copper bar system) don’t need to be exchanged.
	ewa.ibel.de /diesel-gb.htm (814 words)

	mains conditioners and filters for hi-end equipment,power supply for hi-end equipment,hi-end equipment (Site not responding. Last check: 2007-11-06)
		Mains conditioners and filters for hi-end equipment: standard models.
		hi-fi equipment, just like all other electrical equipment, is designed to give best results when the electric power supply meets certain requirements.
		Various protection devices are available for hi-end equipment depending on the electrical problem to be eliminated.
	www.irem.it /en/Mcf/MCFset.htm (113 words)

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