Electrical grounding and bonding training the electricity forum. He is a retired member of the international brotherhood of electrical workers. This section covers the protection of electrical installations by grounding and bounding. Choose from 165 different sets of grounding and bonding flashcards on quizlet. A number of factors make the grounding and bonding of a pv system difficult. This electrical grounding and bonding training course is founded on the cecode and is designed to give you the correct information you need to design, install and maintain effective electrical grounding systems in industrial, commercial and institutional power systems. The tbb shall be sized at 2 kcmil per linear foot of conductor. Not an option here you are, driving your brand new car off the dealers lot. Applied grounding and bonding 1 introduction this presentation is a representative sample from the following chapters of applied grounding and bonding.
Jun 14, 2018 i hear about grounding and bonding being so important in my plants electrical system. Describe groundfault circuit interrupter requirements. One of the most misunderstood and confused concept is difference between bonding, grounding and earthing. Chapter 7 chemical bonding and molecular geometry figure 7. Wbdg is a gateway to uptodate information on integrated whole building design techniques and technologies. Choose from our selection of bonding and grounding equipment, including bonding and grounding clamps, grounding braid, and more. Specification standard grounding and bonding 27 05 26 the university of new mexico 802 yale blvd. Principles of electrical grounding john pfeiffer, p. Learn grounding and bonding with free interactive flashcards. For sizing any bond conductor required on the load side of fuses or circuit breakers.
Index the grounding and bonding system is more than just an insurance policy against a lightning strike or other surge event. Feb 25, 2016 grounding and bonding testing presented by mike lewis senior application engineer meggergg 2. With over 50 years of history, the series has developed from covering theoretical methods for simple molecules to more. Construction bonding is a risk management tool used to protect project owners and developers. Article 250 grounding and bonding introduction to article 250grounding and bonding no other article can match article 250 for misapplication, violation, and misinterpretation. A bond constitutes a legal guarantee that the project will be completed as expected. Power, grounding, bonding, and audio for ham radio safety. Green insulated copper conductor, minimum as specified in the table below, size 6 awg.
What is the process of grounding and bonding a solar pv array. Grounding and bonding means that conductive parts are connected together and to the earth. The jumpers are all short and direct, keeping the equpment bonded together at rf. A survey of requirements, methods, and specifications r. When transferring flammable liquids, it is important that the containers involved are bonded and grounded to prevent static electricity from igniting the vapors. Grounding electrode system and grounding electrode conductor part iii znec 250. Grounding and bonding as electrical installation protocols overlap to a certain extent, but they are not identical. Today burndy is a leading manufacturer and provider of commercial and industrial, utility and oem solutions.
These unique, patented and patentpending products are designed to save labor and time. All four hubs fly off and your shiny new wheels hurtle down the street. The purpose of this course is to familiarize engineers with electrical system grounding and bonding issues associated with solidly grounded systems under 600v. Insulated with greencolored insulation with yellow stripe. Grounding and bonding for communications 27 05 262 c. Bonding all building grounds breaker panel ham shack tower telco cable tv cold. This course can serve as an introduction to grounding and bonding for engineers with little or no professional electrical design experience. 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. These molecules have single and double carboncarbon bonds arranged to. General design and installation requirements associated with the bonding and grounding connections in an electrical system. Grounding and bonding class in denver, colorado iecrm. Various clamps and terminals allow a wide variety of uses. Inadequate bonding or grounding can lead to unreliable operation of systems, e.
It is an active,functioning system that provides protection for personnel and. Explain the fundamentals, basic principles, and requirements of grounding and bonding. They each have different functions, but they work together to make the buildings electrical wiring safe. Chapter 1, introduction chapter 5, requirements for grounded conductors at services chapter, grounding and bonding for separately derived systems. The goal of whole building design is to create a successful highperformance building by applying an integrated design and team approach to the project during the planning and programming phases. In bonding, the emphasis is on creating lowimpedance electrical connections between two or more conductive metallic bodies that are not normally currentcarrying. On feeders with isolated ground, use colored tape, alternating bands of green and yellow tape to provide a minimum of three bands of green and two bands of yellow. Bonding hardware is recommended to mount all panels, equipment, shelves, etc. Bonding is the process of connecting to conductive objects together. Our electrical grounding and bonding training 12 hour live online course is founded on the canadian electrical code. Grounding and bonding theory quiz 1 electrician practice tests. Complete your grounding and bonding pdu requirement with this 1day, 8credit class at iecrm in denver, colorado. One of the more im portant factors in the design and maintenance of aircraft electrical systems is proper bonding and grounding.
Bonding is the lasting joining of metallic pieces to form a conducting path which ensures safe electrical continuity. Department of defense wbdg whole building design guide. 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 grounding and bonding. What is the difference between bonding, grounding and.
Jim brown, k9yc, sent this photo of grounding jumpers green wires in the back of a nice portable station built by glen brown, w6gjb, for the california qso party. Justrites guide to safe grounding and bonding practices. Locate bonding and grounding connections in protected areas whenever possible. This electrical grounding and bonding training course is founded on the cecode and is designed to give you the correct information you need to design, install and maintain effective. Practical grounding, bonding, shielding and surge protection is a practical engineers guide to the areas of grounding, shielding and surge protection designed to deliver reliable equipment and communications systems that comply with international and national codes. A guide to chemical bonding teaching approach chemical bonding is the formation of new substances, with new physical and chemical properties, when atoms and molecules join together.
Aug 10, 2015 bonding washers are used in conjunction with holddown clamps and bolted joints on the racking system. Electrical grounding and bonding mindtap course list completely updated to reflect the 2017 national electrical code, the fifth edition of this userfriendly, practical guide features thorough, current coverage of grounding and bonding requirements in both article 250 and chapter 5 of the nec. Unfortunately, as a semiautomatic process, wedge bonding is slowerand therefore more costlythan ballstitch bonding. Bonding basics steve dantonio marine consulting, inc.
Evans computer sciences corporation, huntsville, alabama prepared for marsha11 space flight center under contract nas860000 and sponsored by the space environments and effects program managed at the marshall space flight center march 1998. Justrites guide to safe grounding and bonding practices their safety is essential. Bonding after shutoff valve if installed in, or attached to, a building or structure, a metal piping systems, including gas piping, that is likely to become energized shall be bonded to the service equipment enclosure. Grounding and bonding grounding is the process of connecting a system, equipment, or both to the earth. Bonding between containers during liquid transfer and connecting drums to an earth ground are required by federal and local codes. 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. Ge grounding equilizer the conductor that interconnects elements of the telecommunications grounding infrastructure. In this case the grounding terminal is bonded to the neutral terminal using the bonding screw green arrow provided by the manufacturer. It is easy to violate the national electrical code requirements and create a safety hazard. It is important for learners to understand the difference between macroscopic and microscopic properties of matter in the. Grounding electrode system utility transformer service conductor service disconnect feeder branch circuit subpanel main bonding jumper 250.
Ionic bonds are nondirectional ions may be attracted to one another in any. It is the permanent joining of metallic parts to form an electrically conductive path that ensures both electrical continuity and the capacity to safely conduct any current. 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. Structure and bonding is a publication which uniquely bridges the journal and book format. This can occur when materials are rubbed together, such as. Difference between bonding, grounding and earthing. In instances where a bonded contractor fails to perform, the bonding company will provide some form of restitution to the owner. The washer fits over the bolt, and when tightened to the prescribed torque value, pierces through oxidized or coated surfaces, providing a solid bond between metal parts. Here, ill focus on the goal of corrosion mitigation and stick to the term bonding. A conductor installed on the supply side of a service or within a service equipment enclosures, or for a separately derived system that ensures the required. Johnston neca executive director, standards and safety 1 welcome to a neca webinar based on the national electrical code. Ionic bonds are strong bonds formed when oppositely charged ions are attracted to each other. The bonding equipment for cu bonding bonder, forming gas application, ball flameoff, capillaries, etc. Proper bonding at left shows a main service panel disconnect fed with a three conductor service cable two hot and a neutral.
This seminar is the first in a short series of electrical grounding and bonding webinars presented by neca. Power, grounding, bonding, and audio for ham radio safety, hum, buzz, and rfi jim brown. That is not to say that supplementary bonding in a kitchen or wash room is wrong it would be wrong for plastic pipes. Grounding is essential in electrical system to safe guard the electrical devices and persons from the high voltage surges. Sure, your engines running at full rpm but youre not going anywhere without those wheels. Any intentional or accidental connection between an electrical circuit or instrument and the earth is known as grounding. Estimate system resistance values for basic grounding system designs and calculate the number of bags of ground enhancement material required. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Terminology used in this article has been a source for much confusion, but thats improved during the last few nec revisions. Bonding tower to house if close to the house, it must be bonded to house ground if distant from house, it should not be bonded to house ground coax shield will provide inductive connection, so most lightning current will go to tower grounds distant 200 ft cable run from base to house. Soares book on grounding and bonding tenth edition international association of electrical inspectors richardson, texas. Bondingbonded bondingbonded also referred to as equipotential bonding means connected to establish electrical continuity and conductivity. Chemical bonding ii advanced bonding theories last updated. Any intentional or accidental connection between an electrical.
Introduction to materials science, chapter 2, atomic structure interatomic bonding university of tennessee, dept. Ac 2199 aircraft wiring and bonding sect 2 chap 2 e. Ground a conducting connection, whether intentional or accidental, between an. The yellow arrow shows the bonding bar used to accomplish this.
It is the permanent joining of metallic parts to form an electrically conductive path that ensures both electrical continuity and the capacity to. Select the appropriate grounding system and discuss the implications. Article 250 contains the following grounding and bonding requirements. Bonding is generally done as protection from electrical shocks. Take free online practice test on grounding and bonding. Earthing and grounding are actually different terms for expressing the same concept. The fundamental purpose of temporary grounding and bonding is to provide a safe path to ground for current, available from induced voltages, switching errors, accidental reenergization or accidental contact with live lines and equipment, thereby keeping workers and the general public from being injured. Simmons serves nfpa on code making panel5 of the national electrical code committee grounding and bonding, and he previously served on the nfpa standards council, the nec technical correlating committee, the iaei, and underwriters laboratories. Equipped with a basic model to describe bonding in chemical species, we are now prepared to explore more advanced models. Products southwire is one of the worlds leading manufacturers of wire and cable, tools, components and assembled solutions. The importance of grounding and bonding involves worker safety, equipment safety, and lightning protection. Systeme international or mks meterkilogramsecond units meter m for length cubic meter m3 for volume. Article 250 grounding and bonding mike holt enterprises.
More than 80 years of technological innovation have made burndy grounding connectors the most widely used and highly respected lines in the industry. 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. 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. The basic steps of ball bonding include the formation of. Bonding is more clear word compare to grounding and earthing, but there is a micro difference between grounding and earhing. There are safety grounds, noise grounds, rf grounds, coffee grounds, kid grounding, etc. Bonding zbonding for main bonding jumper system bonding jumper electrode bonding part v bonding where necessary to ensure electrical continuity and the capacity to conduct safely and fault current likely imposed. Install bonding or grounding connections so that vibration, expansion or contraction, or relative movement incident to normal service use will not break or loosen the connection. Metal frame of the building or structure where the following methods are used to make an earth connection. For plastic pipe installation within a bathroom the plastic pipes do not require supplementary bonding and metal fitments attached to these plastic pipes also would not require supplementary bonding. Byron kirby explains grounding, bonding, the difference, and the correct application for both. Ppt bonding and grounding powerpoint presentation free. Facility and equipment grounding to enhance equipment. Bond placement lids and globtop figure 4 shows the requirements for wirebond placement in proximity to lidattach locations and globtop dam and fill.