ELECTRICAL

• Electricity is one of the most significant contributions that science has given to humanity.
• A simple circuit consists of a battery (or other source), a light bulb (or other load) and conducting wires.
• Electricity is the existence and flow of electric charges (such as electrons or protons).
• Proton is a positively charged particle.
• Electron is a negatively charged particle.
• A lighting outlet is a point connecting the fixed lighting fixtures to a wiring system.
• A convenience outlet is a receptacle outlet mounted on the wall to supply electricity for lamps or other appliances.
• The circuit is the path electricity travels on from the power supply to the source and back to the supply. It refers to the wire installation in the houses that provides current to the light and convenience outlet.
• Panel board is a component of an electrical distribution system dividing electrical power feeds into branch circuits while it is providing a protective circuit breaker or fuse for each course in a standard enclosure.
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  A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by an overcurrent or short circuit. Its basic function is to interrupt current flow to protect equipment and to prevent the risk of fire.
• Overloading occurs if too much current moves through the wires leading to the electrical appliance. In this condition, wires will become overheated and may cause a fire.
• A short circuit occurs when a faulty appliance or exposed wire touches a conductor. The wires heat rapidly and can cause a fire.
• A conduit is a pipe containing the wiring for the lighting system and convenience outlets throughout the house. It may be rigid, flexible, or corrugated.
• A switch is a device that serves to open or close the electric circuit
• A Gang describes the number of switches on the plate. A 1 gang switch controlsa single lighting circuit, and with a two-gang switch, you can control two lightingcircuits, and so on.
• Single Pole Switch refers to a single-pole, single-throw switch. It is a switch providing a secure connection or disconnection over two terminals. It is an on/off application such as switches for lights.
• A Three-way Switch is a common type of light switch that makes it possible to control a ceiling light or other electrical fixture from two different locations in a room.
• A four-way switch controls lighting from three locations, primarily on three-storybuildings.
• Voltage is the electrical pressure produced by a generator. This pressure makes the electricity move from the generator to the house.
• Ampere is the unit by which the electricity passing through the wire is measured. It determines the sizes of wires and fuses to be used in the system.
• Watt is the unit by which the amount of electricity needed for the operation of an electric appliance is measured.
• The wattage can be obtained by the formula: W=V x A
• W = wattage V = voltage A = Ampere
• Service is the equipment used to transmit electricity from the power lines to the building.
• A riser Diagram is used to identify the connection from the service entrance to the kilowatt-hour meter to the main circuit breaker.
• An electrical outlet/receptacle is a socket that connects an electrical device to an electrical supply