Admin Table of Contents
Where is the equipotential bonding connected?
earthing system
Equipotential bonding, commonly just called bonding, is used to reduce the risk of equipment damage and personal injury. It involves joining together all metalwork and conductive items that are connected to an earthing system (also called a grounding system) so that they all have the same potential energy (voltage).
What services are protective equipotential bonding conductors connected to?
Two types of equipotential bonding conductor are specified. These conductors connect together the installation earthing system and the metalwork of other services such as gas and water. This bonding of service pipes must be effected as close as possible to their point of entry to the building, as shown in {Fig 5.13}.
What connects cables to metal pipes?
Supplementary Bonding is the use of a slighter thinner (4mm) green and yellow copper cable to connect together all metal pipes (and possible circuits) in a particular area. This area is typically the bathroom, or any other room containing a bath or shower.
What is the purpose of a bonding conductor?
Bonding is used to reduce the risk of electric shocks to anyone who may touch two separate metal parts when there is a fault somewhere in the supply of electrical installation. By connecting bonding conductors between particular parts, it reduces the voltage there might have been.
What is bonding conductor?
Bonding conductor — a conductor that connects the non-current-carrying parts of electrical equipment, raceways, or enclosures to the service equipment or system grounding conductor.”
What is equipotential grounding?
Facts About Grounding Equipotential is when all conductive objects in a space have the same level of electrical charge, or lack thereof. This means you can be injured through the earth just by standing near a ground rod.
What is the protective bonding conductor?
A supplementary protective bonding conductor is used to connect simultaneously accessible exposed conductive parts and accessible extraneous-conductive-parts to prevent a hazardous potential difference from occurring between them.
What is circuit protective conductor?
The circuit protective conductor (increasingly called the ‘c.p.c.’) is a system of conductors joining together all exposed conductive parts and connecting them to the main earthing terminal. Strictly speaking, the term includes the earthing conductor as well as the equipotential bonding conductors.
What is pipe bonding?
The main purpose of this bond is to ensure that the metal water pipe is at the same zero voltage to ground as the service grounded conductor. A secondary purpose is to ensure that there is a path back to the service for electrical current flow if the metal water pipe becomes energized.
What is a main bonding conductor?
Main bonding – Green and yellow conductors that connect metal pipes (gas, water or oil) from inside a building to the main earthing terminal of the electrical installation. These connections are made to prevent a dangerous voltage between two accessible metal parts, in case there is a fault.
What are the main equipotential bonding conductors used for?
In each electrical installation, main equipotential bonding conductors (earthing wires) are required to connect to the main earthing terminal for the installation of the following: Metal water service pipes. Metal gas installation pipes. Other metal service pipes and ducting. Metal central heating and air-conditioning systems.
What is the difference between supplementary and protective equipotential bonding?
Protective equipotential bonding is different from supplementary bonding. Supplementary bonding is the practice of connecting two conductive simultaneously accessible parts together to reduce the potential difference between the parts. Also know, what is main protective bonding?
Does an installation pipe need main protective bonding?
If this can be verified by visual inspection, the part does need main protective bonding. If an installation pipe is constructed from a plastic type material such as medium density polyethene (MDPE) which is most commonly installed, it is unlikely to be considered an extraneous-conductive-part, but this must be verified.
Do I need to bond the metal pipes of my meter?
If the incoming pipes are made of plastic but the pipes within the electrical installation are made of metal, the main bonding must be carried out, the bonding being applied on the customer side of any meter, main stopcock or insulating insert and of course to the metal pipes of the installation.