Grounding and Bonding NEC - Section 250

Grounding and bonding NEC training explains NEC Article 250 requirements for equipment grounding conductors, bonding methods, grounding electrodes, and fault current paths. Learn code-compliant installation, grounding system testing, and OSHA electrical safety practices.

This interactive 12-hour instructor-led Grounding and Bonding NEC Training course takes an in-depth look at Article 250 of the National Electrical Code (NEC) and is designed to give students the correct information they need to design, install and maintain effective electrical grounding and bonding systems in industrial, commercial and institutional power systems.

DESCRIPTION OUTLINE FEES QUOTATION BROCHURE COUPON

One of the most important AND least understood sections of the NEC is the section on Electrical Grounding.

No other section of the National Electrical Code can match Article 250 (Grounding and Bonding) for confusion that leads to misapplication, violation, and misinterpretation. It's generally agreed that the terminology used in Section 250 has been a source for much confusion for industrial, commercial and institutional electricians. Thankfully, this has improved during the last few revisions to Article 250.

Article 250 covers the requirements for providing a path to earth to reduce overvoltage from lightning, and the bonding requirements for a low-impedance fault-current path back to the electrical supply source to facilitate the operation of overcurrent devices in the event of a ground fault.

Our Grounding and Bonding NEC Training course will address all the latest changes to the Electrical Grounding rules included in the NEC.

Our course will cover fundamentals, identify which earthing system tests can prevent safety and operational issues at your facilities, and provide details regarding which tests can be conducted while the plant is in operation, versus which tests require a shutdown.

Proper electrical grounding and bonding (G&B) of equipment help ensure that the equipment and systems are safe from electric shock by limiting the voltage imposed on them from lightning, line surges, unintentional contact with higher-voltage lines, or ground-fault conditions. Proper G&B is important for personnel protection and for compliance with OSHA 29 CFR 1910.304(g).

It has been determined that more than 70 per cent of all electrical problems in industrial, commercial, and institutional power systems are due to poor grounding and bonding errors. Without proper electrical G&B, sensitive electronic equipment is at risk of data loss, erratic operation, and catastrophic damage. This electrical grounding and bonding training course will give participants a comprehensive understanding of practical applications of proper G&B practices that will comply with the National Electrical Code.

Effective G&B systems maintain electrical continuity between conductive components, ensuring a reliable fault-current path during electrical faults. Equipment grounding conductors connect exposed metal parts of electrical equipment to the grounding network, while grounding electrode conductors link the system to the building's grounding electrode system. Together, these components ensure that fault current returns safely to the source, allowing overcurrent protective devices to operate quickly and reducing the risk of shock hazards, equipment damage, and electrical fires.

Increase Your Knowledge

Focus On Specific Electrical G&B Problems And Consequences Relating To Fires, Safety Of Personnel, And Damage To Equipment
Participate In A Discussion Of Problems And How To Overcome Or Avoid Them
Gain A Firm Foundation Of Knowledge For Your Next Project Involving Electrical G&B
Develop Your Knowledge Of Theory And Practice

Learn About

The Grounding and Bonding and the NEC Section 250
Specific G&B Problems, Installations And the National Electrical Code Requirements
Testing Procedures For Industrial, Commercial And Institutional Electric Power Grounded Systems
Practical Solutions To Earthing Problems

After Attending, You Will

Work More Safely And Efficiently
Have A Better Understanding Of The NEC
Make Fewer Installation Mistakes And Pass Inspections More Easily
Be More Aware Of The Benefits Of Good G&B Systems
Be Better Prepared To Design Your Next G&B System

Without proper G&B, sensitive electronic equipment is at risk of data loss, erratic operation, and catastrophic damage. Allen G.W. Segall (IBM Study) determined that 88.5% of all disturbances are caused by transient overvoltage, and therefore, it is critical to understand the "state-of-the-art" protection technologies.

Inductive effects of lighting, including transients, wiring errors, and code violations, cause damages estimated at about $20 billion in the US each year, based on the following considerations: risk to personnel, equipment replacement costs, repair costs, and data destruction. The economics: Loss of sales, Loss of production, Loss of work in progress. The knowledge acquired in this course will enable the participant to apply correct electrical installation procedures in accordance with the NEC, implement effective cabling, and use state-of-the-art technologies to protect equipment and circuits. A code violation poses hazards to human life and equipment.

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Who should attend

Utility And Industrial Electrical Engineers And Engineering Technicians
Project Engineers
Design Engineers
Field Technicians
Electrical Technicians
Electricians
Plant Operators
Plant Engineers
Electrical Supervisors

Course Benefits

Grounding and Bonding NEC Course Certificate
1.2 Continuing Education Unit (CEU) Credits (12 Professional Development Hours)
100-Page Digital Electrical G&B Handbook - Value $20 (Details Below)
A FREE Magazine Subscription (Value $25)
$100 Coupon Toward Any Future Electricity Forum Course (Restrictions Apply)

Grounding and Bonding NEC Training Course Outline

DAY ONE

INDUSTRIAL, COMMERCIAL GROUNDING SYSTEMS

Session 1: Electrical Grounding Overview

Scope / Introduction
Grounding Definitions
Why Electrical Grounding
Grounding Concepts
Major Cause Of Trouble In An Electrical Distribution System
Faults In The Electrical System
Codes/Handbooks & Industry Standards
NEC Object, Scope And Definitions
IEEE Grounding Standards, Guidelines & Recommendations
Grounding Subsystems

Session 2: Grounding Electrode System

Earth Grounding Subsystems
Soil Resistance, Resistance-To-Ground And Soil Resistivity
Grounding Concept Frequency Limitations
Grounding Electrodes- NEC
Manufactured Grounding Electrodes
In-Situ Grounding Electrodes
Pipe Grounds, Metallic Water Lines & Steel Piling
Primary & Secondary Facility’s Grounding Systems
Grounding Electrode Connections
Empirical, Practical Formulas Of Grounding Electrodes
Ground Rods, Accessories And Applications
Other Electrodes: Conductor Encased In Concrete, Conductive Cement
Resistance-To-Ground Components
Voltage & Current Distribution In The Soil
Grounding Connections & Connectors (Mechanical, Compression, Exothermic)
Grounding Conductor’s Material, Size
Ground Resistance/Resistivity Testers – 3 & 4 Pole Earth Ground Measurements

Session 3: System and Circuit Grounding

Electrical Grounding Methods
Grounding Of Alternating Current Systems
Single-Phase, 3 Wire Solidly Grounded System
3-Phase, 4 Wire Solidly Grounded System (Mid-Point Grounded)
3-Phase, 4 Wire, Solidly Grounded System, WYE Configuration
3-Phase, 4 Wire, Solidly Grounded System With No-Neutral Load
Grounding Connections For Equipment In Ungrounded Systems
Ground Faults / Ground Faults Main Consequences
Floating Systems
Grounding Connections For Two Or More Buildings Supply From A Single Service
Two Ground Faults On Different Lines On A 3-Phase Ungrounded Delta
Simplified Electrical Distribution System Typical Of Commercial & Industrial Facilities

Session 4: Resistance Grounding

Resistance Grounding, Low & High Resistance (HRG)
High Resistance Grounding Considerations
High Resistance Of Medium Voltage Systems
HRG Benefits
HRG Current Sensing Alarm Relays
HRG, Advantages & Disadvantages
HRG Fault Location Tracking
HRG Design Considerations. System Charging
Zero Sequence Current Transformer
Zero Sequence Charging Current
CEC 10-1108 Conductors Used With Neutral Grounding Devices

Session 5: Grounding of Generator to Supply Emergency Power

Grounding Emergency Supply Systems (Generators & Motors)
Objectives
Sources Of Power Supply
Isolation Transformer Grounding
Emergency Supply Grounding, 3 And 4 Pole ATS Systems
Power From Two Sources With Neutral Grounded In One Location
Multiple Emergency Power Supplies Grounding
UPS Grounding For Various Configurations
Generators, Generator Disconnects Emergency Loads & Other Loads
Grounding A Portable Generator

DAY TWO

Session 6: Bonding

Objective, NEC Rule, Bonding & Grounding
Bonding Conductor- Bonding Jumpers
Bonding Conductor Sizing
Types Of Bonding
Means Ensuring Continuity At Service Equipment
Interlocking Armor Of MC Cable Tech 90 Cable
Color Of Bonding Conductor
Electrical Shock/Severity Of An Electrical Shock
Touch & Step Potential
Grounding/Bonding Myths & Fatal Consequences
Personal Protective Equipment
Ground Fault Circuit Interrupter (GFCI)
Bonding Indoor Metal Piping Systems
Effective Grounding- Code Requirement
Effective Grounding Fault Current Path- Diagram
Star Point Grounding- Petrochemical Industry
Industrial Automation Wiring, Bonding & Grounding
Grounding & Bonding AC Power Distribution System With Master Control Relay
Bonding To Racks/Cabinets In The Telecommunications Industry

Session 7: Renewable- Solar Photovoltaic Systems (PV) and Wind Power System

Renewable Energy Systems
System Grounding- Section 50
Ungrounded Solar PV Systems
Equipment Grounding In DC-Only Systems
Grounding Options, New Bonding Conductor From Inverter
Grounding In A Grid-Tied PV System
PV Array/AC Service Equipment/Generator/Inverter/Battery System
Charge Controllers/ DC Subpanels
PV Arrangement/PV Inverter & Service Equipment Grounding Electrode System
Renewable Energy Source/ DC Disconnect/Inverter/Utility Disconnect

Session 8: Grounding Computer Rooms/SCADA Systems

Objectives
Isolated Grounding Subsystem- Rule 10-904
Isolated Bonding Conductors Serving A Receptacle
Isolated Grounds With & Without Metallic Conduits
Signal Reference High Frequency Subsystems
Signal Reference Grounding Systems For ADP High Frequency Equipment
Design & Installation Of A Signal Reference Grid
SRG For Sensitive Electronic Equipment Grounding
Power Supply Installation & Placement For ADP/Computer Room Power Center
Equipment Mesh/Mats For SRG Systems
Cable Management

Session 9: Electro Magnetic Interference (EMI) on Electronic Circuits

Susceptibility Of Components & Electronic Circuits
Shielding/By Absorption & Reflection
Considerations For Utilizing Shields
Data Processing Systems Protection
Grounding Connections/Twin Axial & Coax Cable
Shielding Of Shielded Cables
Grounding For Differential Amplifiers
Proper Bonding & Grounding For PLC Applications
PLC Enclosure Grounding
Grounding Systems For Programmable Controllers
Grounding For Better Communications (Less Noise) With PLC
Formation Of Ground Loops/Multiple Loops In Instrumentation Grounding
Multiple Circuits Common Grounds
Grounding Of Shielded Standard Cable & Cables Equipped With Inner Shields
Typical Single Point Ground Network For A Control System
Recommended Process Automation Grounding Scheme (Typical CCR Or PIB)
How Not-To-Ground (IACS/DCS/PLC)

Session 10: Lightning Protection

Lightning Data/Isoceraunic Maps
Lightning Protection Subsystem Diagram- Rule 10-706/CAN/CSA-B72
Types Of Air Terminals
Cable Supports, Bolted Connectors, Compression Lugs, Ground Bars, Conductors, Ggrounding Electrodes.
Spacing & Interconnecting Grounding Electrodes
Installation & Grounding Of Lightning Arresters/Surge Protection Devices (SPDs)
Conventional Lightning Protection Systems Hardware
Rule 10-706, NFPA 780, UL 96A. LPI 175, NEC Requirements
Metallic & Non-Metallic Tank’s Lightning Protection
Substation Shielding Design Methods
Single Mast Or Shield Wire, Two-Masts & Principle Of The Rolling Sphere
Telecommunications Lightning Protection System

COURSE SCHEDULE:

Both days:

Start: 10 a.m. Eastern Time
Finish: 4:30 p.m. Eastern Time

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Earn Continuing Education Unit (CEU) Credits

Successful completion of this course qualifies delegates to receive a certificate of course completion with indicated CEUs.
One CEU is equivalent to 10 professional development hours of instruction.
This course earns 1.2 CEUs.

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