Grounding versus bonding book

The grounding and bonding system is more than just an insurance policy against a lightning strike or other surge event. What is the difference between grounding and bonding. What is the difference between system grounding and equipment. Grounding and bonding as electrical installation protocols overlap to a certain extent, but they are not identical. This section covers the protection of electrical installations by grounding and bounding. Eustace soares book, grounding electrical distribution systems for safety was originally published in 1966 and was based upon the 1965 edition of the national electrical code. Mike holts illustrated guide to grounding versus bonding 2011 edition wanswer key 9781932685831 by mike holt and a great selection of similar new, used and collectible books available now at great prices.

The purpose of this article is to clarify the difference and to discuss important aspects of both grounding and bonding systems. Mike holts illustrated guide to understanding nec requirements. The energy rating of suitable models ranges from 3300 to 5100 j. This course can serve as an introduction to grounding and bonding for engineers with little or no professional electrical design experience. Arrl technical grounding and bonding for the radio. Soares book on grounding and bonding is the authoritative book on grounding and bonding practices that is revised every nec cycle. Surveys repeatedly show a high percentage of power quality problems are due to poor grounding and bonding. Bonding 2017 grounding and bonding problems are at epidemic levels. The word neutral is reserved for the white when you have a circuit with more than one hot wire. Understanding the differences between bonding, grounding. If the polyphaser protected line duplex outlet pldo featured in the book is unavailable or not within your budget, the tripplite line of premium isobar surge protectors are suitable. Grounding and bonding cecnec how different are they. Difference between bonding, grounding and earthing. Avoid making your radio ground the sink for transient currents through.

This is because grounding can mean different things to different people. Dec 16, 2008 i have gone over the grounding versus bonding book and cds. Bonding belongs in the hands of every electrician, inspector, and engineer who needs to understand the, seemingly conflicting, information of how to properly apply the nec rules of grounding and bonding. Books on grounding znec zieee green book 1421991recommended practice for grounding of industrial and commercial power systems emerald book 11001999 recommended practice for powering and grounding sensitive electronic equipment zindustrial and commercial power system handbook. All code references are based on the 2005 national electrical code. Bonding provides the safety during fault current and. The process of bonding and grounding can be defined as providing an electrically conductive pathway between a dispensing container, a receiving container and an earth ground. Apr 25, 2018 system grounding involves protecting against electricity that originates outside of the house.

Mike holts illustrated guide to grounding versus bonding 2011 edition wanswer key one of the most confusing areas of the trade continues to be grounding and bonding. In bonding, the emphasis is on creating lowimpedance electrical connections between two or more conductive metallic bodies that are not normally currentcarrying. Earthing and grounding are actually different terms for expressing the same concept. The grounding system provides a lowimpedance path for fault current and limits the voltage rise on the normally noncurrentcarrying metallic components of the electrical distribution system. Metal frame of the building or structure where the following methods are used to make an earth connection. Whether its a grounding or bonding connection, the goal in house wiring is to have no metal boxes or any other conductive materials near the wires become electrically hot. Grounding in electrical system limit the high current and thus reduces the damage. Oct 15, 2018 this video shows why equipotential grounding usually provides better protection than bracket grounding, for workers on deenergized electrical lines. Understanding the differences between bonding, grounding, and. Grounding and bonding grounding is the process of connecting a system, equipment, or both to the earth. Also the location of the ground blockdischarge unit. Bonding bonding simply the act of joining two or more electrical conductors together be anything that conducts electricity the bonding must occur to the areas of equipment that.

Bonding and grounding of flammable liquids quick tips. One of the most confusing areas of the trade continues to be bonding and grounding. Extracted from my grounding versus bonding book the grounding and bonding requirements contained in this column apply to solidly grounded systems that operate at not more than 600v, such as 120240v, 120208v, and 277480v. We want all these to be grounded so they have zero electrical potential and cant give us a shock. However, earthing and grounding are similar in function when you consider that they both serve a purpose of. Article 250 grounding and bonding mike holt enterprises. Tower grounding bond coax shield to the tower at top and bottom keeps coax at the same potential as the tower prevents arcover between coax and tower from lightning arcover fries the coax or hard line at points where it occurs run coax and other cables inside the tower. I am still not clear on ground blocksdischarge unit.

Plant engineering fundamentals of grounding and bonding. Bonding is more clear word compare to grounding and earthing, but there is a micro difference between grounding and earhing. What is the difference between bonding, grounding and earthing. Grounding versus bonding many individuals confuse grounding and bonding of a traffic signal system. See all books authored by mike holt, including mike holts illustrated guide to electrical nec exam preparation, and mike holts illustrated guide to understanding the national electrical code, based on the 2005 nec volume 1 wanswer key, and more on. Johnston neca executive director, standards and safety 1 welcome to a neca webinar based on the national electrical code. Grounding versus bonding grounding is the direct connection to the earth ground, everything else is bonding to the equipment grounding conductor all grounds must be connected to the service electrical ground. Practical grounding, bonding, shielding and surge protection. A grounding system is a special form of bonding in which conductive equipment is connected to earth in order to prevent sparking between conductive equipment and grounded structures. This, however, is exactly what iaei has achieved with this edition of soares. Bonding conductor necequipment grounding conductor the cec and nec provide some identical methods for bonding electrical equipment, raceways, cable sheaths, etc. Grounding and bonding are often misused, even in the electrical contractors codes used today. Grounding and bonding means that conductive parts are connected together and to the earth.

A quick guide explaining the differences between bonding, earthing and grounding there are a few differences between bonding, earthing and grounding. What is the difference between system grounding and. Groundingandbonding nationalelectricalcode article250 byjim. I just ordered the grdg versus bonding book to see if i can. Mike holts illustrated guide to nec requirements for grounding vs. Both the national fire protection association nfpa and the occupational safety and health administration. Making sure that all of the metallic components of a traffic signal system are wellgrounded. Grounding and bonding are the basis upon which safety and power quality are built. Insulating, isolating and guarding may be used as means of affording supplemental protection to grounding or, where permitted, in the code, as a suitable alternative. Bonding jumpers ensure a solid electrical connection between conductive parts. Grounding electrode system and grounding electrode conductor part iii znec 250. Bonding is achieved by using a wire while grounding is achieved by using a rod. The importance of bonding and grounding in commercial, industrial, and institutional buildings cannot be overstated.

Improper application of the concepts of grounding and bonding may create lethal shock and fire hazards. System grounding involves protecting against electricity that originates outside of the house. That complex set of measures also needs to ensure the. Take it easy on me as means and methods is not what i typically deal with as a desk jockey. For sizing any bond conductor required on the load side of fuses or circuit breakers.

Grounding versus bonding understanding the difference in. The lighting system protection ground terminals shall be bonded to which of the following grounding electrode system. Mike holts illustrated guide to understanding nec requirements for bonding and grounding based on the 2017 nec paperback 2017. Proper grounding and bonding are essential for efficient network performance in the. Enhance your electrical skills with soares book on grounding and bonding based on the 2011 national electrical code. But there are also some differences between the codes as shown in the table directly above.

If you are new to grounding and bonding or a veteran electrician interested in learning all that is available on the subject, i encourage you to come with me now and we will dig a. Grounding limits the high voltage in electrical system. One of the most misunderstood and confused concept is difference between bonding, grounding and earthing. Earthing is a term which comes from the european international electrotechnical committee iec.

Think about grounding a drum to the copper bus bar in the. They each have different functions, but they work together to make the buildings electrical wiring safe. Principles of electrical grounding john pfeiffer, p. Understanding the nec requirments for grounding vs. Grounding and bonding to csa and nec standards improving.

Mike holts illustrated guide to nec requirements for bonding and grounding belongs in the hands of every electrician, inspector, and engineer who needs to understand the seemingly conflicting information of how to properly apply these particular nec rules. The material is readerfriendly with straightforward, easytounderstand explanations of key concepts that foster understanding. Bonding and grounding textbook, 2020 nec builders book inc. Earthing grounding in the power grid or in the power system includes complexity measures and means that are undertaken in order to provide conditions for normal operation of the system, safe operation and movement of people and animals in the vicinity of the facilities which can come under voltage in normal or hazardous conditions. According to the terminology in the cec and nec, the grounding conductor is for the safety ground, i. In addition, noncurrentcarrying metallic components in a facility, such as equipment cabinets, enclosures, and structural steel, need to be. The book states the location of the antenna discharge unit must be located outside or inside the. Bonding is the process of connecting to conductive objects together. Grounding and bonding are the least understood, the most misinterpreted and confusing elements in modern electrical and electronic systems and leads to poor design and installation work especially as it relates to the canadian electrical code cec and to the national electrical code nec requirements.

May 02, 2017 seldom do design, engineering, installation and enforcement perspectives come together in one book, especially on the controversial topics of grounding and bonding. The grounded circuits of machines need to have an effective return path from the machines to the power source in order to function properly. Pay careful attention to the definitions that apply to grounding and bonding both here and in article 100 as you begin the study of this important article. The national electrical code nec defines grounding as connecting to earth or to some conducting body that serves in place of the earth. This is a brief walk through of a simple grounding and bonding system, and what happens with the flow of current in normal operation, and in a ground fault condition.

In my opinion, bonding the aluminium structure to the steel frame then the steel frame to ground rods would be sufficient. Bonding is more clear word compare to grounding and earthing but there is a micro difference between grounding and earhing. One of the most confusing areas of the trade continues to be grounding and bonding. More than any other topic in the electrical industry, grounding and bonding is at the core of most power quality, and safety issues, making this book a must have for everyone in the industry. Dec 27, 2015 byron kirby explains grounding, bonding, the difference, and the correct application for both. All panels grounding terminal bus not neutral where insulated from the enclosure, install a main bonding jumper or screw with a green finish. Grounding versus bonding part 1 of 12 mike holt enterprises.

Ppt bonding and grounding powerpoint presentation free. It involves connecting the neutral wires in the house to the literal ground through a grounding electrode conductor gec. Mike holts illustrated guide to bonding and grounding. More than any other topic in the electrical industry, grounding and bonding is at the core of most power quality, and safety issues, making this book a must have. This pathway helps eliminate the buildup of static electricity by allowing it to safely dissipate into the ground. The terms grounding and bonding are found throughout the nec text, and while they are seemingly interchangeable, they are actually two distinct procedures when it comes to the national electrical code and installing electrical equipment the act of grounding versus bonding is so important, in fact, that the nec codemakingpanel cmp had actually proposed to replace the term. Knowing the difference is important for contractors, and can help provide their customers with a safe and reliable system that meets code requirements. What is the difference between bonding, grounding and. Power, grounding, bonding, and audio for ham radio safety. It is an active,functioning system that provides protection for personnel and equipment. Whats the difference between grounding and bonding. I have gone over the grounding versus bonding book and cds.

Mike holts illustrated guide to grounding versus bonding. Soares book on grounding and bonding, th edition nec 2017 international association of electrical inspectors, kathryn p. For bonding and grounding to be effective, a metaltometal connection must be maintained between the bonding and grounding wires and the containers. This seminar is the first in a short series of electrical grounding and bonding webinars presented by neca. Bonding is defined as the permanent joining of metallic parts to form an electrically conductive path. The purpose of this course is to familiarize engineers with electrical system grounding and bonding issues associated with solidly grounded systems under 600v. Understanding the differences between bonding, grounding, and earthing the importance of bonding and grounding in commercial, industrial, and institutional buildings cannot be overstated. This is a discussion of the basic principles behind grounding systems and how grounding is related to safety and the effective operation of circuit protection devices such as fuses and circuit breakers. In building electrical systems, grounding and bonding are two terms that are often misunderstood.

Updated fullcolor and dynamic illustrations augment this book to further support this thorough student and professionallevel approach to electrical grounding and bonding. Differences between bonding, earthing and grounding. The problem is that he wants to interconnect copper grounding each pv panel frame aswell which will spoil aesthetics and create a day or two of extra workcosts. Bonding ensures safe electrical continuity while grounding ensures that all metal parts of an electrical circuit that an individual might contact are connected to the earth, thus ensuring zero voltage. Soares book on grounding and bonding, th edition nec 2017.