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JOHN BALL

  • People with low skills and knowledge of a task often overestimate their ability to accomplish it. TCIA graphic.
    April 10, 2024

    The Dunning-Kruger Effect and Educating Clients

    By John Ball, Ph.D., BCMA, CTSP

    Everyone providing pruning or removal quotes has come across this situation. You pull up to the next appointment at a house in a well-wooded neighborhood. The homeowner greets you with slight disdain as you meet at the door. You walk [...]

    read more
  • Class E helmets provide only a measure of protection.
    April 1, 2024

    Part 6: Work Practices Near an Electrical Hazard

    By John Ball, Ph.D., BCMA, CTSP

    Part 1 of Chapter 4, Safe Work Practices (TCI Magazine, March 2024), covered the job hazard analysis (JHA), work plan and job briefing. This article, Part 2 of Chapter 4, Safe Work Practices, focuses on arboricultural operations near overhead power [...]

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  • Conducting a job briefing
    March 15, 2024

    EHAP Revision Series, Part 5: Work Practices Near Utility Conductors: Different Categories of Tree Workers

    By John Ball, Ph.D., BCMA, CTSP

      Note: The following article includes the proposed changes to “Section 3, Electrical Hazard” of the ANSI Z133 safety standard. This next Z edition will be published during 2024, and these “Electrical Level” categories will be subject to change. Conducting [...]

    read more
  • aerial-device operator makes direct contact with conductors
    February 15, 2024

    EHAP Revision, Part 4,Chapter 3: Recognizing Electrical Hazards

    By John Ball, Ph.D., BCMA, CTSP

    Exposure to electric current is one of the many hazard sources during arboricultural operations. But electricity is one of the most unforgiving of these sources. A review of utility data shows that one in four contacts that resulted in an [...]

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  • Spool insulators
    January 4, 2024

    EHAP Revision Series, Part 3: Switching Devices, Support and Other Utility Hardware

    By John Ball, Ph.D., BCMA, CTSP

    This is a continuation of the discussion of the electrical-system equipment found along distribution lines. One of the requirements for arborists working in proximity to an electrical hazard – within 10 feet of the lines – is familiarity with the [...]

    read more
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