It therefore forms the foundations of most electrical systems, ensuring safety to any part of the system, whether new or existing and no matter how. Bonding washers are used in conjunction with holddown clamps and bolted joints on the racking system. Since groundingbonding is such a big part of power quality, i get a new book every 3 years. Soares book on grounding and bonding, th edition nec 2017. This pathway helps eliminate the buildup of static electricity by allowing it to safely dissipate into the ground. Soares grounding and bonding, nec2017 view product soares grounding and bonding, nec2017 pdf view product soares grounding and bonding, nec2014.
Connect grounding conductors to main metal water service pipes by grounding clamp connectors. Design, engineering, installation, and enforcement perspectives for grounding and bonding come together in this unique, handson electrical reference. Bond metal grounding conductor conduit or sleeve to conductor. 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. Bonding and grounding of through bolts or screws, where installation has easy access. Choose from 165 different sets of grounding and bonding flashcards on quizlet. Soares grounding and bonding, nec2014 pdf view product soares grounding and bonding, nec2011 view product.
In most cases, we are concerned with bonding, not grounding. The jumpers are all short and direct, keeping the equpment bonded together at rf. The connection between the grounded circuit conductor and the equipment grounding conductor at the service. Bonding all building grounds breaker panel ham shack tower telco cable tv cold water ground rods radials grounding is for safety lightning protection blows a breaker if a power system short connections should be big copper and short. 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.
Aluminum structure grounding grounding and bonding estimate system resistance values for basic grounding system designs and calculate the number of bags of ground enhancement material required with our gem calculator. It will provide valuable information and guidance to personnel concerned with the preparation of specifications and the procurement of electrical and electronic equipment for the defense communications system. Bonding is achieved by using a wire while grounding is achieved by using a rod. The grounding device shall be removed from the normally energized conductor, line or equipment first. Making sure that all of the metallic components of a traffic signal system are wellgrounded. When an additional grounding electrodes is used for the gas service, it shall be bonded to the. The safe execution of temporary grounding and bonding techniques requires. Equipment grounding conductors shall be ul 83 insulated stranded copper, except that sizes 6 mm. The onion downtown spokane, 302 w riverside ave, spokane, washington, united states. Even the terminology in the nec is misunderstood, for example, the article 100 definition of effective grounding is. This document provides basic and application information on grounding, bonding, and shielding practices recommended for electronic equipment. That process has been ongoing with each successive code cycle. Section 26 05 26 grounding and bonding for electrical systems.
Bonding, nec 2017 th edition by international association of electrical inspectors english 2017 isbn. Article 250 is organized into 10 different parts that deal with specific requirements with regards to bonding and grounding. Practical grounding, bonding, shielding and surge protection unlike many books on grounding and shielding, provides straightforward, practical solutions to commonly encountered realworld situations and enables one to better understand proper ground methods and to quickly recognize and solve existing grounding issues in a facility. May 02, 2017 soares book on grounding and bonding, th edition nec 2017 international association of electrical inspectors, kathryn p. This refers grounding one ore more current carrying hot conductors of the electrical system. Grounding earthing is the establishment of a reference for the electrical power source ac or dc and the electrical equipment or both. Bonding and grounding of flammable liquids quick tips. Its an easy read that is written for learning and understanding, not just a reference like nfpa 70 nec code book. Grounding electrode system utility transformer service conductor service disconnect feeder branch circuit subpanel main bonding jumper 250.
Grounding versus bonding many individuals confuse grounding and bonding of a traffic signal system. One of the most misunderstood and confused concept is difference between bonding, grounding and earthing. All cables, terminations, support hardware, and grounding and bonding hardware shall be furnished, installed, tested, labeled, and documented by the. Bonding is the process of connecting to conductive objects together. Article 250 contains the following grounding and bonding requirements. What is the process of grounding and bonding a solar pv array. Grounding, bonding and connectivity tools estimate system resistance values for basic grounding system designs and calculate the number of bags of ground enhancement material required with our gem calculator.
Rigid steel conduit runs are bonded together in handholes by a solid 6 awg bare copper wire attached to the lug on thread bushings which are installed on the. Once you have completed your purchase, you will receive an email with a link in the text to go and download your purchase. There are three types of bolted connection, as follows. Apr 12, 2016 grounding and bonding as electrical installation protocols overlap to a certain extent, but they are not identical. Grounding, bonding and connectivity tools estimate system resistance values for basic grounding system designs and calculate the number of bags of ground. Soares book on grounding and bonding, th edition nec 2017 international association of electrical inspectors, kathryn p. Soares book on grounding and bonding, based on the 2011 nec.
Iaei acquired the to soares book in 1981 and published the second edition under the title soares grounding electrical distribution systems for safety. These bonded objects are usually but not always grounded. Earthing and grounding are actually different terms for expressing the same concept. What is the difference between grounding and bonding.
Grounding of an electrical system should be done to limit high voltage causes by lighting strikes or any misscontact of low voltage wires with high voltage wires. 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. Soares grounding and bonding, nec2014 pdf view product. 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. Bonding and grounding overview industry standards ground bar kits. All metallic raceways for telecommunications cabling located within the same room or space as the tmgb shall be bonded to the tmgb. Soares book on grounding download ebook pdf, epub, tuebl. Soares book on grounding and bonding, th edition nec. An underground water main is a good grounding point, or a metal grounding rod can be driven into the earth.
Bonding all building grounds breaker panel ham shack tower telco cable tv cold water ground rods radials grounding is for safety lightning protection. Grounding and bonding means that conductive parts are connected together and to the earth. 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. For bonding and grounding to be effective, a metaltometal connection must be maintained between the bonding and grounding wires and the containers. I general ii system grounding iii grounding electrode system and grounding electrode conductor iv enclosure, raceway, and service cable grounding v bonding. Insulation color shall be continuous green for all equipment grounding conductors, except that wire sizes 25 mm. Power, grounding, bonding, and audio for ham radio safety, hum, buzz, and rfi jim brown k9yc. The equipment grounding conductor run with or enclosing the circuit conductors shall be one or more or a combination of the following. Bonding or grounding connections are made directly to a flat surface of basic structure, or to a cylindrical surface of basic structure.
A number of factors make the grounding and bonding of a pv system difficult. For sizing any bond conductor required on the load side of fuses or circuit breakers. Bonding shall be provided where necessary to ensure electrical continuity must have the capacity to conduct safely any fault current likely to be imposed grounding and bonding must be effective these are the safety circuits of the electrical system the safety circuit bonding path must have the. The main bonding jumper connects the groundedneutral conductor to the distribution panel enclosure, to the equipment grounding conductors, and to the groundedneutral conductor coming from the incoming electrical service providers wiring. Its main function is to reduce to a minimum the risks of fire and shock hazard. E319377 application these components meet open frame rack and cabinet bonding and grounding requirements for telecommunication room. The bonding conductor is permanently and directly connected to the electrical service equipment enclosure, the. The technical information provided herein is to assist qualified. Temporary power generation and electrical distribution. Bonding is more clear word compare to grounding and earthing but there is a micro difference between grounding and earhing. Estimate system resistance values for basic grounding system designs and calculate the number of bags of ground enhancement material required with our gem calculator. For outside plant cables entering a building with a cable shield isolation gap, bond the. Aug 10, 2015 bonding washers are used in conjunction with holddown clamps and bolted joints on the racking system. Jul 01, 2014 since grounding bonding is such a big part of power quality, i get a new book every 3 years.
Written by the experts, it explains how and why certain grounding methods are used, but it does so in a logical way, balancing text with photos and illustrations. If you want to learn about grounding and bonding, this is the book. Cutting through the confusion of industry jargon and common misconceptions, and using correct defined terminology, the authors guide the reader stepbystep through the. Article 250 grounding and bonding mike holt enterprises.
Oct, 2011 jean blanc, associate electrical engineer at nfpa, discusses article 250 grounding and bonding in the national electrical code. Where a dielectric main water fitting is installed, connect grounding conductor to street side of fitting. Grounding and bonding for communications 27 05 267 3. Bonding and grounding of electrical equipment installed aboard u. Difference between bonding, grounding and earthing. To ensure a static spark is not created by the difference, a conductive path must be provided to the earth. The purpose of this article is to clarify the difference and to discuss important aspects of both grounding and bonding systems. Principles of electrical grounding john pfeiffer, p. Grounding is the process of eliminating potential difference between an object and the earth. 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. Furnish and install a complete and fullyfunctioning grounding and bonding system.
You will have to sign in with the same account that you purchased the products. Click download or read online button to get soares book on grounding book now. All panels grounding terminal bus not neutral where insulated from the enclosure, install a main bonding jumper or screw with a green finish. For those eager to improve their skills and knowledge in electrical grounding and bonding, this is the book for you. This site is like a library, use search box in the widget to get ebook that you want. Where the national electrical code nec has been enacted into a jurisdictions body of law, it mandates every aspect of electrical installations from the point of view of safety.
Bonding provides the safety during fault current and. A lot of attention is focused on grounding and bonding. Both the national fire protection association nfpa and the occupational safety and health administration. Earthing and bonding is a critical element in providing safety to the majority of electrical installations in the uk. Navy ships must be accomplished to the requirements of milstd10, standard practice for shipboard bonding, grounding, and other techniques for electromagnetic compatibility and safety. Section 260526 grounding and bonding 030314 issued for bids 260526 7 building. In this th edition of soares text, through the use of examples and detailed illustrations, iaei has again tried to set forth clearly the theory and practice of grounding and bonding, allowing you to have tools to better master the subject. Learn grounding and bonding with free interactive flashcards. Grounding and bonding, part 2 c o d e c o r n e r page 22 myths of grounding and bonding grounding is misunderstood because it is misapplied. Soares book on grounding and bonding, 2014 explains how and why certain grounding methods are used, but it does so in a logical way, balancing text with photos and illustrations.
Grounding and bonding grounding is the process of connecting a system, equipment, or both to the earth. From motor lead disconnects and compression connectors to conduit fittings and seismic bracing, abb provides the electrical systems and components you need to ensure reliable operation and minimal downtime. Power, grounding, bonding, and audio for ham radio safety. Improved bonding and grounding methods for electrical.
599 1392 138 524 190 762 887 675 184 579 1297 1031 837 160 286 585 1510 1037 679 1417 1483 1424 1585 911 655 609 960 893 463 506 301 553 394 1202 80