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Definitions (15)
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utility grid
Electrical power transmission is the bulk transfer of electrical power. A power transmission network typically connects power plants to multiple substations near populated areas.
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ac power
AC is short for alternating current and is the usual way by which electricity is delivered to residential and industrial locations. With the use of higher voltage, the transmission of power becomes significantly efficient.
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amp
Also known as ampere, it is a unit of electric current or amount of electric charge per unit time in coulombs per second. In a practical household wiring terms, it is the measurement of the number of electrons passing through a given point in one-second intervals.
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dc power
Short for direct current, it is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, and solar cells. In direct current, the electric charges flow in a constant direction.
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electrical load
An electric circuit connected to an output terminal. Electrical load affects the performance of circuits that output voltages or currents. A power outlet is an example of voltage source, outputting 120 VAC (volts alternating current).
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electrical panel
A component of an electricity supply system which divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit in a common enclosure. This device is also most commonly known as a breaker panel, fuse box or load center.
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inverter
An electrical device which is designed to convert direct current (DC) into alternating current (AC). The resulting AC can be at any required voltage or frequency. It is so named because early mechanical AC to DC converters were made to work in reverse order and thus were "inverted" to convert DC to AC. The inverter performs the opposite f [..]
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kilowatts
1,000 watts = 1 kW (kilowatt). It is used to state the power output of engines and the power consumption of tools and machines. A kilowatt is approximately equivalent to 1.34 horsepower. An electric heater with one heating element might use 1 kilowatt.
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photovoltaic
Photo – meaning light and voltaic – referring to electricity. Photons sent from the sun are absorbed by the panels and converted to electricity.
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solar cells
A device that converts solar energy into electricity by the photovoltaic effect. Assemblies of cells are used to make solar panels, solar modules, or photovoltaic arrays. These cells convert the photons sent from the sun into electrons, leading to the production of electricity.
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