In this EC&M Tech Talk, Randy Barnett covers some of the most often used NEC rules for making grounding and bonding connections. In the first section the importance of making these connections properly, in accordance with code requirements, is stressed. Examples of what happens when faults do arise are given.
Section 250.8 of the NEC gives the 8 methods for making grounding and bonding connections. One of these methods must always be used. Images are used to illustrate several of the devices that may be used. Making connections to grounding electrodes is of importance. Unfortunately, these rules are sometimes violated!
Finally, some of the more important requirements NEC requirements for bonding with equipment grounding conductors. Grounding receptacles to metal boxes is discussed as some can become confused with the specifics of these rules.
Proper grounding and bonding helps meet the purpose of the NEC – protecting people and property from electrical hazards!
About the Author
Randy Barnett
CESCP
Randy Barnett is a master electrician, ICC Commercial Electrical Inspector, NFPA-certified Electrical Safety Compliance Professional and has worked as an electrician and technician in nuclear and coal-fired power plants, government nuclear research facilities, and in industrial maintenance and construction. He is the author of Commercial and Industrial Wiring – American Technical Publishers, numerous articles, and the producer of a monthly Tech Talk video series for EC&M Magazine. Randy provides training and program development services for clients such as, NTT Training, ABB, American Polywater, Socomec, and Schneider Electric. Randy can be reached at www.randybarnett.net.