100 WORDS FOR MECHANICAL EQUIPMENT BY Mr.Sorawit Therdpitakpong NO:21. CLASS: B.TECH
Ampacity Ammeter A safety device that detects and interrupts arcing faults in electrical circuits, reducing the risk of electrical fires. An instrument used to measure electric current in amperes.
A conductor can safely carry the maximum electrical current without overheating or causing damage. Ampacity The unit of measurement for electrical current. Ampere (Amp) A continuous signal representing a physical quantity, such as voltage or current, varies over time. Analog Signal An electrical device used in homes for various purposes, such as cooking, cleaning, or entertainment. Appliance
A protective device designed to automatically interrupt the flow of electrical current in case of an overload or short circuit. Breaker A temporary reduction in voltage or power supply levels, typically caused by high demand on the electrical grid. Brownout A unit of heat energy often used to measure the heating or cooling capacity of appliances and systems. British Thermal Unit (BTU) Busbar A conductive metal strip or bar that distributes electrical power within a panel or switchboard.
Byte A unit of digital information storage consisting of 8 bits.
Cable Circuit A bundle of wires or conductors enclosed in a protective sheath used to transmit electrical power or signals. A closed path through which electric current flows, including various electrical components such as switches, resistors, and capacitors.
The negatively charged electrode in an electrical device, such as a battery or diode, where electrons flow from an external circuit into the device. Cathode A unit within a battery that generates electrical energy through a chemical reaction, typically composed of an anode, cathode, and electrolyte. Cell
Electrical current flows in one direction only. An electrical current that flows in one direction only, commonly used in batteries and solar panels. A unit of measurement for the intensity of sound or the strength of an electrical signal, comparing the power levels of two signals. Direct current (DC) DC (Direct Current) Decibel (dB)
A machine that converts mechanical energy into electrical energy by generating a direct current (DC) through the rotation of a coil within a magnetic field. Duty Cycle Dynamo The percentage of time during which an electrical device is actively operating, compared to the total time it is connected to a power source.
The conductive mass of the earth, which can be used as an electrical ground. A connection between an electrical system and the earth, used to provide a safe path for excess current to flow in the event of a fault or short circuit. Earth Earth Ground
Earthing Eddy Currents The process of connecting electrical systems and devices to the earth to provide a safe path for fault currents and minimize the risk of electric shock. Circular electric currents induced within conductors by a changing magnetic field in the conductor due to relative motion between the conductor and the magnetic field.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Lorem ipsum dolor sit amet, consectetur adipiscing elit. FILAMENT The thin wire inside an incandescent light bulb that glows and produces light when heated by an electric current. An electronic device or circuit that selectively allows specific frequencies or signals to pass through while blocking others, often used to remove noise or interference from electrical signals. FILTER FLICKER A rapid fluctuation in the brightness of a light source, usually caused by variations in voltage or current.
FLEXIBLE CONDUIT A type of conduit made from flexible materials, such as plastic or metal, that can be bent and shaped to accommodate different wiring configurations and installations. FOOT-CANDLE A unit of measurement for illuminance, representing the amount of light falling on a surface. One footcandle is equal to one lumen per square foot.
Gauge Aunit of measurement for the diameter of electrical wires, with lower numbers representing thicker wires and higher numbers representing thinner wires. Generator A machine that converts mechanical energy into electrical energy, providing power during outages or in remote locations.
Grounding Electrode Aconductivematerial,suchasametal rodorplate,buriedinthegroundand connectedtothegrounding conductor,providingadirectelectrical connectiontotheearth. Ground Loop Anunwantedelectricalcurrent thatflowsbetweengrounded componentsinasystem,often causinginterferenceornoisein electronicdevices.
GroundingConductor Awirethatconnectsan electricalsystemordevice totheground,providinga safepathforfaultcurrents.
HERTZ (HZ) Aunitoffrequencymeasurement representingthenumberofcycles persecond.Inelectricalsystems,the standardfrequencyis60Hzinthe UnitedStatesand50Hzinmost othercountries. HIGH VOLTAGE Referstoelectricalvoltagesabovea certainthreshold,typicallygreater than1000volts.Highvoltage systemsareusedforlong-distance electricitytransmissionandare potentiallydangerousifnothandled properly.
CHART A form of renewable energy that uses the movement of water to generate electricity. This can be achieved through various methods, such as dams, run-of-river systems, or tidal power stations. HYDROPOWER HYPERLINK A connection between two documents or webpages, allowing users to navigate between them easily. In electrical terminology, hyperlinks may provide additional information or resources related to a specific term or concept.
A device used to convert DC to AC power. The light falling on a surface, measured in lux (lx). It indicates the brightness of an area and is essential for determining appropriate lighting levels for different tasks or activities. Inverter Illuminance
Integrated Circuit (IC)
Joule (J) A SHORT ELECTRICAL WIRE TEMPORARILY CONNECTS TWO POINTS IN A CIRCUIT, TYPICALLY FOR TESTING OR TROUBLESHOOTING PURPOSES. Junction Box Jumper Wire A UNIT OF ENERGY EQUIVALENT TO THE WORK DONE WHEN A FORCE OF ONE NEWTON MOVES AN OBJECT THROUGH A DISTANCE OF ONE METER. IT IS NAMED AFTER THE ENGLISH PHYSICIST JAMES PRESCOTT JOULE. A PROTECTIVE ENCLOSURE THAT HOUSES ELECTRICAL CONNECTIONS, SUCH AS WIRE SPLICES OR TERMINATIONS, AND PROVIDES A SAFETY BARRIER BETWEEN ELECTRICAL COMPONENTS AND THE SURROUNDING ENVIRONMENT.
The undesired deviation or variation in the timing of a digital signal or clock, which can lead to errors in data transmission and processing. Jitter Joule Heating A point in an electrical circuit where two or more conductors are connected, either by soldering, crimping, or other mechanical means.
A unit of electrical power equal to 1,000 watts. Kilowatts are commonly used to measure the power consumption of home electrical devices. Kilowatt (kW
A unit of electrical power equal to 1,000 watts. Kilowatts are commonly used to measure the power consumption of home electrical devices. Kilowatt (kW
An electrical connector designed with a unique shape or keying feature to ensure it can only be connected to a compatible mating connector. This helps prevent incorrect connections and potential damage to electrical devices. Keyed connector
LLuummeennss A unit of measurement for the total visible light emitted by a source. A wire that carries an electrical current, also known as the "hot" wire. LLiivvee WWiirree
LLoocckkoouutt//TTaaggoouutt A safety procedure to ensure that electrical equipment is properly shut off and not accidentally re-energized during maintenance or repair work.
“ Mains electricity ” The general-purpose alternating current (AC) electric power supply provided to households and businesses by utility companies.
“ Magnetic field ” An invisible force field created by magnets and moving electric charges exerts a force on other magnets and moving charges.
“ Magnetic flux ” A measure of the total magnetic field that passes through a given area, often represented by the symbol Φ.
“ Magnetic induction ” Inducing an electric current in a conductor by changing its magnetic field.
A wire that carries current back to the source, usually color-coded white or gray in residential wiring systems. It is connected to the earth's ground at the main electrical panel. Electrical installations in new construction or during major renovations, as opposed to "old work, " which refers to repairs or upgrades in existing structures. Neutral Wire New Work
A point in an electrical circuit connecting two or more components. Node
The unit of electrical resistance, named after Georg Simon Ohm. It measures the opposition to the flow of electric current in a conductor. A break or discontinuity in an electrical circuit that prevents current flow. Ohm Open Circuit
A fundamental principle in electricity states that the current passing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. A chemical reaction that occurs when a material, such as a metal, reacts with oxygen in the air, resulting in corrosion or deterioration of the material. In electrical systems, oxidation can affect the conductivity of contacts and connections. Ohm's Law Oxidation
A situation where the voltage in an electrical circuit exceeds the specified limit, which can cause damage to equipment and appliances. Overvoltage
Polarity The rate at which electrical energy is transferred or consumed in a circuit, typically measured in watts (W). The direction of the electric field in a circuit, often referring to a battery or power source's positive (+) and negative (-) terminals. Power
An electricity meter that requires users to pay for their electricity usage in advance, helping to manage consumption and avoid unexpected bills. A receptacle installed in a wall or other surface provides access to electrical power for plugging devices and appliances. Prepaid Meter Prepaid Meter Power Outlet
A device with prongs that connect to an electrical outlet to power an appliance or electronic device. Plug
QUADRATURE The amount of current an electrical device consumes in a non-operating or standby mode. A term used to describe two signals that are 90 degrees out of phase with each other. QUIESCENT CURRENT
LA five-conductor cable used to deliver electricity from the utility pole to a residential property, consisting of three insulated conductors for the three-phase power, one insulated neutral conductor, and one bare grounding conductor. QUINTUPLEX SERVICE DROP
The ratio of the number of electrons a photovoltaic cell generates to the number of incident photons. QUANTUM EFFICIENCY
Resistance (R) A property of a material that opposes the flow of electric current, measured in ohms (Ω). It determines how much a material resists the passage of electricity.
Relay An electrically operated switch that uses an electromagnet to open or close a circuit. Relays are often used when controlling a high-power circuit with a low-power signal is necessary.
RMS (Root Mean Square) A mathematical method used to calculate the average voltage or current of an alternating current (AC) waveform, often used to express the effective value of an AC signal.
The point at which electrical power from the utility company enters a home, usually through overhead or underground cables. SERVICE ENTRANCE A breaker panel or distribution board is a metal box containing circuit breakers or fuses that distribute electricity throughout a home. SERVICE PANEL
SYSTEM GROUNDING Connecting an electrical system to the earth provides a safe path for excess current and reduces the risk of electric shock.
SWITCH An electrical component that can interrupt the flow of electricity in a circuit, allowing homeowners to control lights and appliances.
A point of connection for wires within an electrical component or system, allowing the flow of current between various parts. Terminal
A device that transfers electrical energy from one circuit to another through electromagnetic induction, often used to increase or decrease voltage levels. Transformer