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Lightning Protection Systems

2026 Public Input Report | 2026 Public Comment Report

FEMA National Risk Index: Lightning

“Benjamin Franklin Drawing Electricity from the Sky” 1816 Benjamin West

 

Benjamin Franklin conducted his famous experiment with lightning on June 10, 1752.

He used a kite and a key to demonstrate that lightning was a form of electricity.

This experiment marked an important milestone in understanding the nature of electricity

and laid the foundation for the development of lightning rods and other lightning protection systems.

 

Seasonal extreme weather patterns in the United States, resulting in damages to education facilities and delays in outdoor athletic events — track meets; lacrosse games, swimming pool closures and the like — inspire a revisit of the relevant standards for the systems that contribute to safety from injury and physical damage to buildings: NFPA 780 Standard for the Installation of Lightning Protection Systems

FREE ACCESS

To paraphrase the NFPA 780 prospectus:

  • This document shall cover traditional lightning protection system installation requirements for the following:
       (1) Ordinary structures
       (2) Miscellaneous structures and special occupancies
       (3) Heavy-duty stacks
       (4) Structures containing flammable vapors, flammable gases, or liquids with flammable vapors
       (5) Structures housing explosive materials
       (6) Wind turbines
       (7) Watercraft
       (8) Airfield lighting circuits
       (9) Solar arrays
  • This document shall address lightning protection of the structure but not the equipment or installation requirements for electric generating, transmission, and distribution systems except as given in Chapter 9 and Chapter 12.

(Electric generating facilities whose primary purpose is to generate electric power are excluded from this standard with regard to generation, transmission, and distribution of power.  Most electrical utilities have standards covering the protection of their facilities and equipment. Installations not directly related to those areas and structures housing such installations can be protected against lightning by the provisions of this standard.)

  • This document shall not cover lightning protection system installation requirements for early streamer emission systems or charge dissipation systems.

“Down conductors” must be at least #2 AWG copper (0 AWG aluminum) for Class I materials in structures less than 75-ft in height

“Down conductors: must be at least 00 AWG copper (0000 AWG aluminum) for Class II Materials in structures greater than 75-ft in height.

Related grounding and bonding  requirements appears in Chapters 2 and Chapter 3 of NFPA 70 National Electrical Code.  This standard does not establish evacuation criteria.  

University of Michigan | Washtenaw County (Photo by Kai Petainen)

The current edition is dated 2023 and, from the transcripts, you can observe concern about solar power and early emission streamer technologies tracking through the committee decision making.  Education communities have significant activity in wide-open spaces; hence our attention to technical specifics.

2023 Public Input Report

2023 Public Comment Report

Public input on the 2026 revision is receivable until 1 June 2023.

We always encourage our colleagues to key in their own ideas into the NFPA public input facility (CLICK HERE).   We maintain NFPA 780 on our Power colloquia which collaborates with IEEE four times monthly in European and American time zones.  See our CALENDAR for the next online meeting; open to everyone.

Lightning flash density – 12 hourly averages over the year (NASA OTD/LIS) This shows that lightning is much more frequent in summer than in winter, and from noon to midnight compared to midnight to noon.

Issue: [14-105]

Category: Electrical, Telecommunication, Public Safety, Risk Management

Colleagues: Mike Anthony, Jim Harvey, Kane Howard

More

Installing lightning protection system for your facility in 3 Steps (Surge Protection)

IEEE Education & Healthcare Facility Electrotechnology

Readings: The “30-30” Rule for Outdoor Athletic Events Lightning Hazard

Churches and chapels are more susceptible to lightning damage due to their height and design. Consider:

Height: Taller structures are more likely to be struck by lightning because they are closer to the cloud base where lightning originates.

Location: If a church or chapel is situated in an area with frequent thunderstorms, it will have a higher likelihood of being struck by lightning.

Construction Materials: The materials used in the construction of the building can affect its vulnerability. Metal structures, for instance, can conduct lightning strikes more readily than non-metallic materials.

Proximity to Other Structures: If the church or chapel is located near other taller structures like trees, utility poles, or buildings, it could increase the chances of lightning seeking a path through these objects before reaching the building.

Lightning Protection Systems: Installing lightning rods and other lightning protection systems can help to divert lightning strikes away from the structure, reducing the risk of damage.

Maintenance: Regular maintenance of lightning protection systems is essential to ensure their effectiveness. Neglecting maintenance could result in increased susceptibility to lightning damage.

Historical Significance: Older buildings might lack modern lightning protection systems, making them more vulnerable to lightning strikes.

The risk can be mitigated by proper design, installation of lightning protection systems, and regular maintenance. 

Virginia Tech

Reflections / John Nash

“Non-Cooperative Games” 1951 | John Nash

Brian Keating: Cosmology, Astrophysics, Aliens & Losing the Nobel Prize

 

Charlie Kirk (August 12, 2025): “Has U.S. President Donald Trump gone too far?”

The Oxford Union Society is the world’s most prestigious debating society, with an unparalleled reputation for bringing international guests and speakers to Oxford. Since 1823, the Union has been promoting debate and discussion not just in Oxford University, but across the globe.


Vedika Rastogi | This House Believes Woke Culture Has Gone Too Far – 1/8 | Oxford Union

Alex Jackson | This House Believes Woke Culture Has Gone Too Far – 2/8 | Oxford Union

Toby Young | This House Believes Woke Culture Has Gone Too Far – 3/8 | Oxford Union

Yasmin Benoit | This House Believes Woke Culture Has Gone Too Far – 4/8 | Oxford Union

Tommy Nguyen | This House Believes Woke Culture Has Gone Too Far – 5/8 | Oxford Union

James Lindsay | This House Believes Woke Culture Has Gone Too Far – 6/8 | Oxford Union

Benjamin Butterworth | This House Believes Woke Culture Has Gone Too Far – 8/8 | Oxford Union

 

“How to Escape the Woke Matrix”

 

Working Dogs

Standards Wyoming

Animals 300

History of the English Speaking Peoples

Michigan Central

Since so much of what we do in standards setting is built upon a foundation of a shared understanding and agreement of the meaning of words (no less so than in technical standard setting) that time is well spent reflecting upon the origin of the nouns and verbs of that we use every day.   Best practice cannot be discovered, much less promulgated, without its understanding secured with common language.

Word Counts

2024 Alumni Awards

Cambridge: English language education in the era of generative AI

Gallery: Other Ways of Knowing Climate Change

“The test of a good religion is whether you can joke about it”

G.K. Chesterton | ‘All Things Considered’ 1908

Life-cycle cost of education community settings are informed by climate change assumptions.  In addition to the flow of research money to faculty for laboratory space, graduate student support, supercomputer installations, conference travel; these assumptions inform the architectural character of a campus — i.e. the design and operation its buildings and infrastructure.  These assumptions swing back and forth over these eternal institutions with cyclical assumptions about global cooling and global warming.  In the late 1960’s academic researchers found evidence of global cooling.  Fifty years on academic researchers assume the earth is warming.  We just roll with it as we do with all the other policy “givens” we accommodate.    Stewardship of the planet — keeping it clean for those who follow us — Yes.  Catastrophilia — the love of catastrophone so well documented in history — not so much.

As with all emotional issues, language changes mightily.  We refer you to our journey through technical standard language HERE.

According to a report by the Congressional Research Service, federal funding for climate research and related activities totaled approximately $13.8 billion in fiscal year 2020. This funding was distributed across various agencies and programs, including the National Science Foundation’s Climate and Large-Scale Dynamics program, National Oceanic and Atmospheric Administration’s climate Program Office, and the Department of Energy’s Office of Science.

Not included in this figure is the opportunity cost and loss of brand identity of not conforming to the climate change agenda.

The “Narrative”

Mass Formation Psychosis

Climate Psychosis

Climate Science: What Does it Say?

Dialectic: Climate Change

Readings / The Administrative State

If you repeat a lie often enough, people will believe it, and you will even come to believe it yourself. - Joseph Goebbels

The Chapel in the Sorbonne

“Patience is the companion of wisdom.”

St. Augustine of Hippo

Sacred Spaces



Solar Panels on King’s College Chapel Roof

“…The solar panels will populate the gothic chapel roof, producing an approximate 105,000 kWh of energy a year – enough to run the chapel’s electricity, and saving around £20,000 in energy bills per year. The college confirmed that any excess energy would be sold off to the national grid.

King’s College Announcement

Solar Panels on King’s College Chapel Roof

Solar panels perform better when listening to music:

A 2013 study by researchers at Imperial College London and Queen Mary University of London showed that solar panels actually work better when exposed to music, of multiple genres. Scientists at the university proved that when exposed to high pitched sounds, like those found in rock and pop music, the solar cells’ power output increased by up to 40 percent. Classical music was also found to increase the solar cells’ energy production, but slightly less so than rock and pop, as it generally plays at a lower pitch than pop and rock. Whether they know it or not, British band Coldplay are just one of the artists benefitting from this research. During their 2021 tour, they installed solar photovoltaic panels in the build-up to each show, “behind the stage, around the stadium and where possible in the outer concourses”…

BS 7671 Requirements for Electrical Installations

The Major Differences in Electrical Standards Between the U.S. and Europe

Representative Calculation: (WAG)

To determine how much electrical power and lighting 12 kilowatts (kW) will provide for an educational facility, we need to consider the following factors:

    1. Power Distribution: How the 12 kW will be distributed across different electrical needs such as lighting, computers, HVAC (heating, ventilation, and air conditioning), and other equipment.
    2. Lighting Requirements: The specific lighting requirements per square foot or room, which can vary based on the type of facility (classrooms, libraries, laboratories, etc.).
    3. Efficiency of Lighting: The type of lighting used (e.g., LED, fluorescent, incandescent) as this affects the power consumption and lighting output.

We start with lighting.

    1. Lighting Efficiency:
      • LED lights are highly efficient, typically around 100 lumens per watt.
      • Fluorescent lights are less efficient, around 60-70 lumens per watt.
    2. Lighting Power Calculation:
      • 12 kW (12,000 watts) of LED lighting at 100 lumens per watt would provide: 12,000 watts×100 lumens/watt=1,200,000 lumens
    3. Illumination Requirements:
      • Classroom: Approximately 300-500 lux (lumens per square meter).
      • Library or laboratory: Approximately 500-750 lux.
    4. Area Coverage:
      • If we target 500 lux (which is 500 lumens per square meter), we can calculate the area covered by the lighting: (1,200,000 lumens)/ 500 lux=2,400 square meters

Now we need to allocate power to other loads.

    1. Lighting: Assuming 50% of the 12 kW goes to lighting:
      • Lighting Power: 6 kW (6,000 watts)
      • Using the previous calculation: 6,000 watts×100 lumens/watt=600,000 lumens
      • Area Coverage for lighting (at 500 lux): (600,000 lumens)/500 lux=1,200 square meters
    2. Other Electrical Needs:
      • Computers and equipment: Typically, a computer lab might use around 100 watts per computer.
      • HVAC: This can vary widely, but let’s assume 4 kW is allocated for HVAC and other systems.

Breakdown:

    • Lighting: 6 kW
    • Computers/Equipment: 2 kW (e.g., 20 computers at 100 watts each)
    • HVAC and other systems: 4 kW

Summary

    • Lighting: 12 kW can provide efficient LED lighting for approximately 1,200 square meters at 500 lux.
    • General Use: When distributed, 12 kW can cover lighting, a computer lab with 20 computers, and basic HVAC needs for a small to medium-sized educational facility.

The exact capacity will vary based on specific facility needs and equipment efficiency.

 

 

Beauty in a World of Ugliness

History of Western Civilization Told Through the Acoustics of its Worship Spaces

 

Abstract.  Insights into the history and future of western civilization are found by applying information theory to the acoustical communication channel (ACC) of its worship spaces. Properties of the ACC have both influenced and reflected the choice of message coding (e.g., speech or music) at various times. Speech coding is efficient for acoustically dry ACCs, but hopeless for highly time-dispersive ACCs. Music coding is appropriate for time dispersive (reverberant) ACCs. The ACCs of synagogues, early Christian house churches, and many Protestant churches are relatively acoustically “dry” and thus well suited to spoken liturgies.

The spoken liturgy, dominant in synagogues, was carried over to early Christian churches, but became unworkable in Constantinian cathedrals and was largely replaced with a musical liturgy. After a millennium, the cathedral acoustic was altered to suit the doctrinal needs of reformation churches with its renewed emphasis on the spoken word. Worship forms continue to change, and the changes are reflected in the properties of the ACC. The pulpits of electronic churches may be evolving into radio and television performance spaces and naves into worshipers’ living rooms.

CLICK IMAGE

Evensong “How Do You Keep the Music Playing?”

Sacred Spaces

National Youth Choir of Scotland “Love Divine”

 

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