Transmission and Distribution Grounding and Stray Voltage

Live Streaming Online September 28-29, 2022

A Program

Click Here to register $1295

If you are unable to attend at the scheduled date and time, we make recordings available to all registrants for three business days after the event

The Transmission & Distribution Grounding and Stray Voltage program aims to provide electric engineering professionals and technicians with a contemporary overview of grounding practices and stray voltage issues.

Attendees will leave with a comprehensive understanding of the necessary grounding methods and practices, as well as the stray voltage mitigation techniques and real-life scenarios. Details will include three phase power systems, step/touch potentials, ground resistance measurements, ground grids, test equipment, neutral isolators, and more.

Learning Outcomes 

  • Review engineering formulas in order to start a foundational knowledge of grounding (i.e. Ohm’s Law, Kirchhoff’s Voltage & Current Laws, etc.)
  • Discuss grounding methods and definitions, including step/touch potentials, connection points, electrodes, etc.
  • Evaluate grounding practices in the distribution and transmission system (measurements, substation, ground grids, ground design)
  • Examine the effects of electricity on humans and animals
  • Review stray voltage definitions and how it’s measured
  • Analyze stray voltage mitigation techniques, including phase balancing, deteriorated neutrals, and neutral isolators
  • Consider stray voltage scenarios such as swimming pools, farms, fences and more



9:00 a.m. – 4:30 p.m. Central Time

Engineering Formulas Relevant to Grounding

  • Ohm’s Law
  • Kirchhoff’s Voltage and Current Laws
  • Alternating Current
  • Impedance Model
  • Three Phase Power Systems

Grounding Methods

  • NESC 2017 Section 9
    • Connection Points
    • Method of Connection
    • Grounding Electrodes
    • Separation of Ground Conductors
  • NEC 2020 Article 250
    • Grounding Electrode System
    • Separately Derived Systems
    • Intersystem Bonding

Grounding Definitions

  • Effectively Grounded – Per NEC
  • Step/Touch Potentials – IEEE Std. 80
  • Bonded

Grounding Practices

  • Distribution System
    • Ground Resistance Measurements
    • Earth Ground Clamp Meters
    • Substation
    • Ground Grids
  • Transmission System
    • Tower Ground Design
    • Steel Pole Grounding

Effects of Electricity on Humans & Animals

  • Humans
  • Animals
  • Threshold of Fatality and Perception


9:00 a.m. – 4:30 p.m. Central Time

Stray Voltage Definition

  • Per IEEE Working Group 1695
  • Stray Voltage vs. Contact Voltage

Stray Voltage Measurement

  • Test Equipment
  • Measurement Scenarios
  • Harmonic Analysis
  • Data Collection

Stray Voltage Mitigation Techniques

  • Phase Balancing
  • Deteriorated Neutrals
  • Neutral Isolators

Stray Voltage Scenarios

  • Swimming Pools
  • Shower and Faucets
  • Farms
  • Fences and Gates
  • Street Furniture

Stray and Contact Voltage Case Studies

  • Transmission Line Influence on Railroads
  • Substation Grounding Causing Shower Shocks
  • Transmission Line Influence on Pool Grounding
  • Boat Dock Shock Caused by Distribution Line Routing