What is the earthing and bonding?
Earthing – A way of preventing electric shocks. Electrical installation – a fixed wiring system. Live – Active (there is electricity). 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.
What is protective earth bonding?
Equipotential bonding is essentially an electrical connection maintaining various exposed conductive parts and extraneous conductive parts at substantially the same potential. In a building, there are typically a number of services other than electrical supply that employ metallic connections in their design.
What is equipotential bonding 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 is intrinsic earthing?
The Importance of Grounding of Intrinsically Safe Devices in Hazardous Areas. Intrinsic safety is system concept and it prevents explosion in hazardous areas by limiting electrical energy. The IS device which is installed in a classified area needs to be connected to a source of power (IS barrier) by cabling.
Why is grounding and bonding important?
This provides protection against electric shock in the event the metal case of the appliance becomes electrically energized. In a similar fashion, bonding is employed to protect from accidental electric shock. We should always ensure that our electrical equipment with conductive cabinets are properly grounded.
What is the difference between earthing grounding and bonding?
Grounding, which is also known as Earthing, is a particular type of bonding when conductive objects are connected to earth using a good conductor. These conductors are usually wires or rods. Grounding doesn’t impact the regular running of the electrical system. Bonding provides the safety in the case of fault current.
What is the difference between grounded and grounding?
A grounded wire is required by the National Electrical Code to be white or gray in color on the customer side of the meter. Grounded wires on the utility side of the system do not generally have insulation. A “grounding” wire on the other hand is a safety wire that has intentionally been connected to earth.
What is PE and IE earthing?
Grounding is very Importent, ensuring smooth operation of our control systems and to minimize upon electrical shock hazards, noise, static electricity, etc. Therefore, we always should create two separate paths to ground for our Protection Earth (PE) and our Instrumentation Earth (IE).
What are the main reason why grounding is necessary?
One of the most important reasons for grounding electrical currents is that it protects your appliances, your home and everyone in it from surges in electricity. If lightning was to strike or the power was to surge at your place for whatever reason, this produces dangerously high voltages of electricity in your system.
Why is grounding important in a hazardous area?
Thus, proper equipment grounding within hazardous areas becomes even more important than in nonhazardous locations. All of these requirements for the EGC are for personnel safety and, in the case of hazardous areas, can prevent an arc or spark from reaching the hazardous atmosphere.
Which is an example of a bonding and grounding system?
The diagram below is an example of a complete bonding and grounding system. The bonding wire is shown connecting the lid of the receiving container to the dispensing container. The grounding wire is shown connecting the dispensing container to the common ground within the facility. The common ground is in turn connected to an earth ground.
How is a grounding wire connected to a dispensing container?
The grounding wire is shown connecting the dispensing container to the common ground within the facility. The common ground is in turn connected to an earth ground. Any ground source that is adequate for power circuits or lightning protection is sufficient for protection against static electricity.
When do you need bonding and grounding in a tank?
An underground tank and piping connected to it would be inherently grounded by nature of the installation. Both Bonding and Grounding of containers of flammable liquids are required under U.S. Government OSHA regulations and National Fire Protection Association Code 77, static electricity.