What is equipotential bonding and grounding?
Equipotential bonding or simply bonding is a technique for minimising the danger of equipment damage and personal injury. It entails connecting all metals and conductive goods to an earthing system (also known as a grounding system) so all of them have the same potential energy (voltage).
What is electrical equipotential bonding?
Equipotential bonding, commonly known as bonding, is a crucial electrical procedure that reduces the risk of personal injury and damage to equipment. The process works by connecting exposed parts to an earthing system (also known as a grounding system).
Does OSHA require equipotential grounding?
Worker Protection Ever since enforcement of 29 CFR 1910.269 began in 1994, OSHA has required grounding practices that will protect employees in the event that the line or equipment on which they are working becomes re-energized. The equipotential zone, or EPZ, is made to do just that.
Is equipotential bonding a legal requirement?
∎ W hen the gas ‘service’ pipework up to the meter is considered an extraneous-conductive-part it is a requirement to provide protective equipotential bonding (PEB) to any continuous conductive ‘installation’ pipework i.e. the pipework downstream of the meter, back to the main earth terminal (MET) in the dwelling.
Is equipotential bonding required?
Equipotential Bonding Zone The use of equipotential bonding zones is required by OSHA for individuals working with power generation, transmission, and distribution equipment under standard number 1910.269.
Does being grounding prevent electric shock?
In an electrical system, the grounding system is the primary protection against electrical shock hazards. It provides a low-resistance pathway to ground to protect against electrical faults.
What is the equipotential zone?
An equipotential zone is a work zone in which the worker is protected from electric shock from differences in electric potential between objects in the work area. These differences in potential can be caused by induced voltage, line reenergization, or lightning.
What are the 2 types of grounding systems?
There are two kinds of grounding: (1) electrical circuit or system grounding, and (2) electrical equipment grounding. Electrical system grounding is accomplished when one conductor of the circuit is intentionally connected to earth.
What are the 2 types of grounds required by OSHA?
Grounding
- System or Service Ground: In this type of ground, a wire called “the neutral conductor” is grounded at the transformer, and again at the service entrance to the building.
- Equipment Ground: This is intended to offer enhanced protection to the workers themselves.
Why do we need equipotential bonding?
Protective equipotential bonding is a method of applying a low impedance path from exposed-conductive-parts to extraneous-conductive-parts, to ensure equal potential throughout the installation thus preventing a hazardous potential difference occurring between such parts in the event of a fault.
What does the NEC say about grounding requirements for electrical equipment?
Article 100 of the NEC defines ground as “the earth.” Section 250.4(A)(1) states that grounded electrical systems “shall be connected to earth in a manner that will limit the voltage imposed by lightning, line surges, or unintentional contact with higher-voltage lines and that will stabilize the voltage to earth during …
What is the purpose of protective equipotential bonding?
What is the difference between system grounding and equipment grounding?
Grounding is usually done at two levels: system grounding and equipment grounding. The system ground is a special circuit designed to protect the entire distribution system of a residence. Equipment ground is essentially a circuit designed to protect individual components of an electrical system.
What are the types of electrical grounding?
Why equipotential bonding is installed at an electrical installation?
1 states “Equipotential bonding is intended to minimize the risk associated with the occurrence of voltage differences between exposed conductive parts of electrical equipment and extraneous conductive parts”.