Older panels were sized for 150, 100, or fewer amps (amperes). | ElectricalMag, What is Mobile Substation? Over current – this is where the current exceeds the rated current of the electrical equipment; with over current the circuit is considered unhealthy. Busbar used for? Devices are connected to the individual branch circuits that start at the breakers in the main service panel. Part P – Part P of the Building Regulations details how to safely install an electrical system in a domestic property. Cable management system – A means of supporting and managing cables in an installation.

Electrical current – The movement of electrons through a conductor. Inspection – The act of examining the electrical installation. If there was a fault between line and earth, the RCD would trip as there would be no current on the neutral conductor. Plug – A piece of equipment designed to fit inside a socket as means of connecting an appliance or piece of equipment. Flex (2) – A flexible cable that has a soft rubber or thermoplastic outer sheath and individually insulated conductors inside it.

Keep up the good spirit. 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. Conduit is a rigid metal or plastic tubing that protects individual insulated wires. Socket outlet – Designed to work with a plug to allow the connection of electrical appliances. So if you know two of the three characteristics, your can calculate the third one. Great arguments. If a circuit has a problem, such as an overload or a fault, the breaker automatically trips itself off. Circuit – A circuit is an assembly of electrical equipment that originates at the same point and is protected by the same device. Fused connection unit (2) – A fused connection unit is a type of accessory which protects a piece of fixed current using equipment. 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. You must be careful to distinguish between the two kinds of flow. The most common cause of a tripped breaker is a circuit overload.

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. What is Switchgear? Inside, it has two single conductors of the same size that are both separately insulated, one is brown in colour denoting its intended use as the line conductor, and the other is blue, denoting its intended use as the neutral conductor. Spur – A spur is a branch off of a ring or a radial circuit. Protective conductor (cpc) – A conductor used to provide protection against electric shock, often referred to as the ‘earth’ conductor. The utility company's service cables (whether overhead or underground) extend to your house and connect to the utility's electric meter. It …

Some people think of a positive current that is in the opposite direction from the electron flow- that is, from positive to negative instead of from negative to positive. CPC stands for Circuit Protective Conductor.

Main switch (5) – Although not a protective device, in a typical household, the mains switch is located in the consumer unit. 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. Busbar – A solid strip of conducting material, usually copper, to which electrical equipment can be attached and powered.

After passing through the meter, your electrical service feeds into your home's main service panel, commonly known as the breaker box. Familiar cells include the dry cells used in flashlights, calculators, and radios. If you’re new to the industry, the language used can appear quite daunting at first. Circuit breaker (1) – A type of protective device for circuits, it will protect a circuit from overload and fault currents.

Insulation – Insulation is the material surrounding a conductor.

The word “current” to mean electron flow-from negative to positive. Multi-function tester- A piece of test equipment that combines multiple testing facilities in one unit, an example would be the KEWTECH KT64. You must know what each one means if you are to understand other people and make them understand you. The greater the resistance, the less the current for a given potential difference. Nice explanation, but picture for shorted circuit is misleading. Some pathways resist the flow only slightly. This also reduces the incidence of overloaded circuits. 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. Get daily tips and tricks for making your best home.

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