It is made up of basic protection and fault protection. Service cable – This is the cable that supplies electricity into a property, it is terminated in the service head. DC – Direct Current is an electric current that travels in only one direction, this is the type of current that a … Fixed Current using equipment – A piece of equipment that is a permanent part of an electrical installation, an example would be a cooker that has been hardwired directly. Cable management system – A means of supporting and managing cables in an installation. Retro-fit: A customised or serviced piece of old technology. Ampere (A or Amp) - Unit of electrical current. Glossary of Electrical terms. Fused spur unit (FSU): See fused connection unit (FCU). Circuit: The means of distributing electricity, consisting of cable and accessories. Periodic inspection report (PIR): A report detailing the condition of an existing electrical installation (replaced by the EICR). Plug – A piece of equipment designed to fit inside a socket as means of connecting an appliance or piece of equipment. The motor is a key component of an ebike. BS 7671: The British Standard Requirements for Electrical Installations, formerly known as the IEE Wiring Regulations. AC current is the way that electricity is distributed through the power network in the UK. Circuit tester (Voltage tick): A device that plugs into a conventional outlet to check the circuit is properly grounded. This will usually be at the same voltage as ‘earth’. BS – British Standard (General) A publication of the British Standards Institution (BSI). Electrical potential – This is the amount of work that is required for an electric charge to move from one point to another. Part P – Part P of the Building Regulations details how to safely install an electrical system in a domestic property. This is an electrical outlet which has its own internal breaker, which opens the circuit when there is a connection made between the power wire and return wire to prevent electrical shock. Two Gang: A type of electrical box which holds either two switches and two receptacles, or one switch and one receptacle. Ring Circuit– A circuit that has two sets of conductors leaving a distribution board from the same point essentially forming a ring, generally only used for socket circuits. TN-S – A means of earthing commonly utilised in the U.K., the line, neutral and earth conductors enter the building as one cable, the line and the neutral conductors are in the centre of the cable and the lead sheath on the outside of the cable acts as the earth conductor. Buy Maquila Terminology: Electrical: An English-Spanish Guide with the Most Frequently Used Technical Terms of the Maquila Industry by Leyva, José Luis, Gutiérrez, Roberto, Medina, Daniel, Medina, Pablo Isaac (ISBN: 9781503032040) from Amazon's Book Store. Direct current (DC): An electrical current which flows in one direction, such as from a battery. Safe Isolation – Safe isolation is checking to ensure that no electricity is present in the circuit about to be worked on and that the circuit cannot be re-energised by anyone other than the person working on it. Electrical installation condition report (EICR): A report detailing the condition of a property’s existing electrical installation. Electrical current – The movement of electrons through a conductor. General lighting service (GLS): The traditional type of incandescent lamp with either a BC or ES base. TT – A means of earthing commonly used in the U.K., in this installation there is no earth cable supplied by the distributor, instead use is made of a locally fitted earth electrode. Double insulation – As well as providing basic insulation, double insulation provides an extra layer of insulation. Total Harmonic Distortion (THD): the sum of all amplifier distortion components, plus system noise. Searching for an electrician? Like many professions, electricians have their own dictionary of terminology and slang. Equipotential bonding – this is where extraneous-conductive-parts are connected together to keep them at the same potential and reduce the risk of electric shock. Breaker Panel: Commonly found outside the home in a garage or basement, this is an electrical service panel containing circuit breakers that supply power to receptacle loads, lighting and heating. Multi-meter: Used for continuity checks, checking voltage, and other similar tasks. Departure – A piece of work or equipment that deliberately does not follow the wiring regulations, the person responsible for the design must declare it, and that it is at least as safe as following the wiring regulations would have been. Minor works – Electrical work that does not normally require notification to a building control body, examples include extending or altering an existing circuit that is not in a special location (such as a bathroom). Final circuit: An electrical circuit which directly supplies socket outlets, lighting and appliances. Earth leakage circuit breaker (ELCB): A circuit protection device, available as voltage operated (now obsolete), or current operated (now called RCD). Covering what was the Southern Electricity Board area. Electricians were originally people who demonstrated or studied the principles of electricity, often electrostatic generators of one form or another.. Electric potential - The electric potential is the difference in electrical charge between two points in a circuit. Circuit breaker (1) – A type of protective device for circuits, it will protect a circuit from overload and fault currents. Kingfield Electronics have been operating in contract electronics manufacturing and product management solutions since 1985, and have a wealth of knowledge in all aspects of the industry. Origin of an installation – This is where the electricity is distributed to an electrical installation, in a house this would be the primary consumer unit. Electrical definition - Designing Buildings Wiki - Share your construction industry knowledge. This may result in an overload or a short circuit. Watts: The energy consumed by a light bulb or appliance per second is expressed in watts. We discuss Electrician Basics, Electrical & Electrician Terminology, Vocabulary and Definitions. It’s a bold statement, but it’s true. Light-emitting diode (LED): An energy-efficient device which emits light when supplied with electricity, developing rapidly into a viable light source in its own right. Terminology. Each one is numbered, starting with the letters BS, and defines the standard of a product. ESQCR – The Electricity Safety and Continuity Regulations, these are the regulations that the Distribution Network Operator works too. … Cooker connection unit (CCU): A switch used to isolate a cooker, oven or hob. Hertz (Hz): Unit of measure of frequency. Fused connection unit (FCU): An electrical accessory containing a cartridge fuse, used to connect and protect an item of equipment. Wattage – Rate of electricity energy used by lights or appliances; or the maximum watts the device is designed to deliver or control. Circuit protective conductor (CPC): Used to prevent metal components becoming ‘live’; otherwise referred to as the earth wire in a cable. The main earthing terminal and earthing conductor. Electrical installation – An electrical installation is an installation made up of electrical equipment having a specific purpose. Resistive Load: An electrical load with no significant inrush current. The standard unit for electric current is the ampere. Most electrical conductors are also thermal conductors, with the higher electrical conductivity materials usually having higher thermal conductivity. Neutral conductor – The other ‘live’ conductor in a circuit. Home × Domestic Services × Commercial Services × Inspection & Testing Services × Kitchen & Bathroom Fitters, About × Testimonials × Complaints Policy × Contact × Blog. Selectivity – This is the act of selecting your protective devices, so only the one you want operates when a fault is detected. Double pole (DP): A switch with two blades – allowing simultaneous opening or closing both sides of a circuit. Inspection – The act of examining the electrical installation. For TT systems the earth electrode (not pictured), The path through the earthed neutral point of the substations transformer, The line conductor from the transformer winding back to the point of origin of the fault (not pictured). Electrical circuits where current passes through multiple elements either one after the other, or side by side, like the rungs of a ladder, or both. Everyday low prices and free delivery on eligible orders. Recessed lighting: A light fixture installed into a hollow opening, also known as ‘pot lights’. Ohm’s Law: The equation V=IR where V is the voltage in volts, I is the current in amperes, and R is. Earthing conductor – This is the conductor that connects the main earthing terminal to the means of earthing for the installation. Over current – this is where the current exceeds the rated current of the electrical equipment; with over current the circuit is considered unhealthy. Main switch – This will be at the origin of the installation generally inside the consumer unit. Home Run: The main line running from the electrical service panel to the first device in the electrical circuit. Current carrying capacity – The amount of electrical current a cable or piece of equipment can handle safely. Arc-Fault Circuit Interrupter (AFCI): A circuit breaker device used in the prevention of fires by detecting electrical arcs. Voltage nominal – This is the voltage by which an installation is designated. The light indicates that the circuit is live. A general term applied to most of the devices used for connecting and controlling lighting and power, eg sockets and switches. Alternating current (AC): An electrical current that changes its direction of flow many times per second, used in mains electricity supplies. Circuit loading factors: A set of criteria used to ensure you do not exceed the number of receptacles on a circuit. PME – Protective Multiple Earthing, this is the practice of connecting the PEN conductor of a TN-C-S arrangement to earth periodically along its length. Distribution circuit: A circuit supplying electricity to a secondary distribution board. Everyday low prices and free delivery on eligible orders. Notifiable work – Electrical work that requires the relevant building control body to be notified, examples include installing a new circuit or replacing a consumer unit. Functional switching – The action of operating a device to either vary, or switch on and off the electricity supply to a device. Home Electrical Parts and Materials: Electrical parts and materials should be approved for the specific project and compliant with local and national electrical codes. These aren’t road legal in the UK and are treated the same as motorbikes due to the lack of pedalling involved. Electrical terms or Electrical terminology must be known by electrical students and engineers. AC current is the way that electricity is distributed through the power network in the UK. Overload current – Overload current is where more current is drawn through the circuit than it has been designed for, but the circuit is still considered healthy. Fault current – A current arising from a fault in an electrical installation. Barrier (3) – Something to prevent contact with a live electrical part, for example a busbar cover within a Consumer unit. Extraneous conductive part – A part that is not part of the electrical installation and that could introduce a path to earth for the electricity to flow in the event of a fault. Residual current device (RCD): A circuit protection device which detects the difference in current between the live conductorsand disconnects it if the differential current exceeds a specific value. Switch Leg: The wire connected to the on-off switch. Tinned– This refers to the practice of soldering the end of a multi strand cable. Its purpose is to disconnect the supply of electricity to the installation. Distribution board (DB): A piece of equipment used to connect circuits to an electricity supply. Spanning both domestic and commercial, the range of tasks required may include wiring and rewiring, installations, inspections and testing. ADS – Automatic Disconnection of Supply – This is what prevents a dangerous occurrence arising in case of a fault condition. Normally used in UK houses at 240V (RMS) alternating at 50 times per second (50 hertz). Electrical Generating Systems Association - A non profit association of manufacturers, distributors, and users of on-site power generation equipment. This document details the requirements for electrical installations in the UK. A third un-insulated conductor sits between the two and this is used as the Circuit Protective Conductor or ‘earth’ as it is commonly known. Wire stripper: A tool to remove the plastic, rubber or paper insulation around an electrical wire. For TN systems either the lead sheath of the cable (TN-S) or the combined neutral and earth cable (TN-C-S). Low voltage: An electrical supply of between 50V AC and 1000V AC. ‘Singles’ (5) – A colloquial term used for when a cable is a self contained single conductor, can refer to any cable that is singular, however in a domestic setting PVC insulated singles are often what is mean by the use of the term. Overhead wires: Wires that are found above the ground. If you’re new to the industry, the language used can appear quite daunting at first. Troglodyte dwellings. If there was a fault between line and earth, the RCD would trip as there would be no current on the neutral conductor. Electric current - Electric current is the flow of electric charge through a material. Electrical wiring in the United Kingdom is commonly understood to be an electrical installation for operation by end users within domestic, commercial, industrial, and other buildings, and also in special installations and locations, such as marinas or caravan parks. It describes the actual amount of power present in a system in watts (W) and the symbol is P. In a simple resistive circuit, the voltage and current are in phase and the active power is equal to the apparent power. It’s a vehicle that drives solely on battery power. Scottish and Southern Electricity (SSE): One of the local DNOs covering the whole of central southern England, responsible for distributing electricity to homes. Electrical Terminology-Electric current - The rate of flow of electrons in one direction in a circuit is called electric current. Prospective fault current – The amount of current that could potentially flow between conductors in the event of a fault. In a domestic setting these can be found inside the consumer unit, normally covered by a busbar cover to prevent someone coming into contact with it while energised. Fuse box or fuse board: See ‘distribution board’. Fuse: A safety device which melts the wire inside it when an excessive current flows. Accessory – This is something that makes up part of a circuit, but isn’t a fixed current using piece of equipment, an example is a socket. Basic protection – This protects you from electric shock under fault free conditions i.e. Circuit – A circuit is an assembly of electrical equipment that originates at the same point and is protected by the same device. Isolator – This is a device that is mechanically operated and is capable of isolating a particular circuit/piece of equipment as required. Exposed conductive part – Part of a piece of equipment that can be touched. It is no longer allowed in new electrical installations but may still be encountered. Over current: A condition when the normal load current is exceeded in a circuit. Voltage Rating: The maximum open circuit voltage in which a fuse can be used. electric set (continuous power). Glossary of Electrical terms. Edison screw (ES): a type of lamp base developed by Thomas Edison which literally screws into a lamp holder. Local authority building control (LABC): The department which controls building standards, including electrical installation. Important in the design of high power electronics, heatsinks, semiconductor casings, etc. In this instance the circuit is treated as unhealthy. Competent Persons Scheme – This allows an individual to self-certify that their work complies with the building regulations, examples being the NICEIC and ELECSA, Unit 29 Mid Sussex Business Park Folders Lane East Hassocks East Sussex BN6 8SE. Pendant: A light hanging from the ceiling. Bonding: Connections on exposed wires to prevent electric shock. Distribution network operator (DNO): The company which distributes electricity to your home. Earth fault loop path – This is the path the electricity flows when a fault arises causing the activation of the protective device for the circuit affected, starting at the point of the fault: Electrical equipment – When using the phrase ‘electrical equipment’ this can refer to any item that is part of the electrical system, such as fuses, generators, transformers etc. Grounding: The process of connecting equipment to a common ground or “earth”. Homes carved from sandstone cliffs in England. High voltage AC provides a more efficient way of transmitting power over long distances than low voltage DC. The Supply Protective Device is a large fuse based at the origin of your installation, generally in a domestic property they are rated at 60A, 80A or 100A. Electrical Panel: An insulated panel used to connect electrical wires to circuit breakers. Alternating Current (AC) - The type of mains electricity used in the UK having a cyclical current waveform. Buy Pocket Guide to Electrical Equipment and Terminology by Lee, R. R. (ISBN: 9780884153054) from Amazon's Book Store. MET – Main Earth Terminal, this is where all the earthing conductors are connected, from here they are connected back to the installations means of earthing. Receptacle: A 110 volt or 220 volt device used to furnish an electrical source for electrical tools or appliances. Steel wire armoured (SWA): A cable, suitable for use outdoors and underground, with a layer of steel wire strands around the central conductors. Circuit breaker (CB): A device which automatically breaks an electrical circuit when a fault is detected. This connects the incoming supply to the final circuits, and protects the the fixed wiring in the building while providing a point of isolation. Twin and Earth (1) – This is the most common cable used in domestic electrical installations, it is a flat grey thermo-plastic sheathed cable. Residual current circuit breaker with overcurrent protection (RCBO): A device designed to protect a circuit, combining features of a circuit breaker and an RCD. Glossary of electrical terms - Designing Buildings Wiki - Share your construction industry knowledge. Main switch (5) – Although not a protective device, in a typical household, the mains switch is located in the consumer unit. Surface: When the accessory backbox is fixed to the face of the wall – the opposite to ‘flush’. ELECTROCHEMICAL - The relationship of electricity to chemical changes and with the conversions of chemical and electrical energy. Fuse (2) – A fuse is a protective device. basic Electrical Terms includes electric current, resistance, voltage or potential difference, Circuit, cell, battery. This is called a final circuit because it is the final part of the system. Consumer distribution unit CDU: See consumer control unit. A Glossary of Electrical Terms Become an Electrician Electricians are skilled tradespeople working in a variety of different residential and industrial settings. A system in which an electrical value (usually voltage or current, but sometimes frequency, phase, etc.) LSHF (4) – Low Smoke Halogen Free cable is a cable with a particular type of insulation that is designed so that it emits a small amount of smoke and zero halogen when exposed to fire or heat. Screwdrivers: A rubber tipped tool including flat-bladed and cross-shaped Phillips-head drivers. The job of an electrician is extremely varied. De-energized circuit: A circuit with no power. PEN conductor – Protective Earth and Neutral, this is one conductor that combines the functions of a neutral conductor and a protective conductor, the most commonly found example is in a TN-C-S earthing system. Spur: A cable supplying a socket or other accessory, which branches off a circuit typically from a RFC. Keyless : A white porcelain lighting device used in a storage area or for temporary lighting. There are three bands which are designated, and they are: Distributor – The person (in this case person refers to a company) who is responsible for the distribution of electricity. Earth Electrode – Usually a solid copper rod that is driven into the ground to provide a means of earthing in TT earthing systems. BEV (Battery Electric Vehicle) Petrol and diesel are never needed to get a BEV moving. Small bayonet cap (SBC): A type of lamp base needing a push-and-turn action to insert into lampholder. A GFCI stops the flow of electricity by opening or breaking the circuit when a flow of current to ground is detected. Ferrule – Also known as an electrical crimp, this is a small metal tube that is placed over the stripped end of a multi strand wire and then crushed using a crimping tool to protect the end of the cable. Socket outlet – Designed to work with a plug to allow the connection of electrical appliances. Flush: The way in which electrical accessories are sunk into the wall, so only the faceplace protrudes. those that aren’t part of a piece of equipment such as the motor in an extractor fan, and luminaires. DC – Direct Current is an electric current that travels in only one direction, this is the type of current that a battery produces. The Basic Electrical Terminology Terms as follows: Active Power (Watt): Sometime called Real Power, True Power or Effective power. British vs. American Electric Terms. This guide looks at some key terms and phrases that you’ll be learning about and using during your electrical training with us. Understanding the Part P Electrical Regulations, Electrician Terminology and Slang – Know Your Lingo. ELECTRICITY - The flow of electrons from atom to atom in a conductor. Radial circuit: A circuit arranged so that the cable runs from the consumer unit or fusebox to one or more accesories or loads without returning to the origin. Multi-function tester- A piece of test equipment that combines multiple testing facilities in one unit, an example would be the KEWTECH KT64. During normal service this piece of equipment should be safe to touch but it has the potential to become live under fault. Flex (2) – A flexible cable that has a soft rubber or thermoplastic outer sheath and individually insulated conductors inside it. Following the announcement of an England wide lockdown starting Thursday 5th November, Electricians Courses 4U will continue to deliver courses at our premises in line with the government guidelines allowing individuals to travel and attend education. The change from petrol and diesel cars to electric is happening much more quickly than people anticipated. TN-C-S – A means of earthing commonly used in the U.K., in this cable the neutral conductor is also the earth conductor, this is known as a PEN (Protective Earth and Neutral) conductor. Resistance – The amount of opposition to the flow of electricity through a conductor. Something is defined as ‘electrical’ or ‘electric’ if it uses electricity to function, is involved with the production or transmission of electricity, or is in some other way related to electricity. Voltage – Force generated to cause flow in a circuit. Underground cables: Buried wires under the ground. Overload: An over current exceeding the normal full load current of a circuit. Within a country there will be some variation in electrical terminology, but between two that have the same language, the generally accepted lingo can be markedly different. CO₂ (Carbon Dioxide) CO 2 is considered to be the main cause of greenhouse … in normal use. Meter tails – These are split into two parts, the meter tails from the service head to the electricity meter, and the meter tails from the meter to the consumer unit. Live Conductors: Wires with electrical current running through them. Line (L): Formerly known as ‘live’ or ‘phase’, this is one of the cable cores in a typical mains supply.Lineman’s pliers: A tool used for cutting cable or heavy wire and twisting ends together. CPC stands for Circuit Protective Conductor. Resistance: The property of an electrical circuit, measured in ohms, that restricts the flow of current. Miniature circuit breaker (MCB): A small circuit breaker. Line conductor – What a lot of people mistakenly refer to as the ‘live’ conductor. Design current – The amount of current that the circuit is intended to use in normal use. Watt – Unit of measure indicating electrical power applied in a circuit. Ground Rod: A ½ inch in diameter and eight foot long copper or aluminum rod driven into the ground near the outside electrical service. In UK terminology, the track normally used by trains proceeding towards the main terminus. Conductors: Any material, substance of device that allows the flow of electricity. As a hands-on industry with a heavy reliance on health and safety, these terms have an important role to play, allowing for precision and ease of communication between contractors and customers, teams and individuals. Alternating Current (AC) - The type of mains electricity used in the UK having a cyclical current waveform. Here we have compiled a glossary of terms and definitions for reference purposes. Consumer Unit (1) – Also commonly known as fuse board/box, this is where the circuits in an installation originate from and where your’ protective devices will be located. When it is switched ‘off’ the consumer unit and all associated circuits will be de-energised. Almost 5% of visitors to my site are from the UK. Residual current circuit breaker (RCCB): See residual current device (RCD). ... New national seismic hazard maps for the UK. Pig Tail: A temporary light, consisting of a light socket and two connecting wires – one black, and one white. e-Glossary Your electric terminology explained. Lamp – What is often referred to as a ‘bulb’ a lamp is the part of a light fitting which emits the light. Wiring Regulations – Colloquial name for BS7671 Requirements for Electrical Installations. DNO – Distribution Network Operator, these are the companies licensed to distribute electricity around the UK. Accessory: An electrical device or product including switches, sockets, adapters and connectors. This document details the requirements for electrical installations in the UK. Insulation – Insulation is the material surrounding a conductor. Distribution Circuit – A circuit that provides power to a distribution board. 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