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

Thunderstorm | Shelter (Building: 30/30 Rule)

The standards for delaying outdoor sports due to lightning are typically set by governing bodies such as sports leagues, associations, or organizations, as well as local weather authorities. These standards may vary depending on the specific sport, location, and level of play. However, some common guidelines for delaying outdoor sports due to lightning include:

  1. Lightning Detection Systems: Many sports facilities are equipped with lightning detection systems that can track lightning activity in the area. These systems use sensors to detect lightning strikes and provide real-time information on the proximity and severity of the lightning threat. When lightning is detected within a certain radius of the sports facility, it can trigger a delay or suspension of outdoor sports activities.
  2. Lightning Distance and Time Rules: A common rule of thumb used in outdoor sports is the “30-30” rule, which states that if the time between seeing lightning and hearing thunder is less than 30 seconds, outdoor activities should be suspended, and participants should seek shelter. The idea is that lightning can strike even when it is not raining, and thunder can indicate the proximity of lightning. Once the thunder is heard within 30 seconds of seeing lightning, the delay or suspension should be implemented.
  3. Local Weather Authority Guidelines: Local weather authorities, such as the National Weather Service in the United States, may issue severe weather warnings that include lightning information. Sports organizations may follow these guidelines and suspend outdoor sports activities when severe weather warnings, including lightning, are issued for the area.
  4. Sports-Specific Guidelines: Some sports may have specific guidelines for lightning delays or suspensions. For example, golf often follows a “Play Suspended” policy, where play is halted immediately when a siren or horn is sounded, and players are required to leave the course and seek shelter. Other sports may have specific rules regarding how long a delay should last, how players should be informed, and when play can resume.

It’s important to note that safety should always be the top priority when it comes to lightning and outdoor sports. Following established guidelines and seeking shelter when lightning is detected or severe weather warnings are issued can help protect participants from the dangers of lightning strikes.

Noteworthy: NFPA titles such as NFPA 780 and NFPA 70 Article 242 deal largely with wiring safety, informed by assuring a low-resistance path to earth (ground)

There are various lightning detection and monitoring devices available on the market that can help you stay safe during thunderstorms. Some of these devices can track the distance of lightning strikes and alert you when lightning is detected within a certain radius of your location. Some devices can also provide real-time updates on lightning strikes in your area, allowing you to make informed decisions about when to seek shelter.

Examples of such devices include personal lightning detectors, lightning alert systems, and weather stations that have lightning detection capabilities. It is important to note that these devices should not be solely relied upon for lightning safety and should be used in conjunction with other safety measures, such as seeking shelter indoors and avoiding open areas during thunderstorms.

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

NESC & NEC Cross-Code Correlation

Statement from NARUC During its Summer 2018 Committee Meetings

IEEE Education & Healthcare Facilities Committee

Draft Proposals for the 2028 National Electrical Safety Code

Representative State Level Service Quality Standards

MI Power Grid


Relevant Research


PROCESS, PROCEDURES & SCHEDULE

2025-2026 NESC Revision Schedule

Mike Anthony is ID Number 469 | Proposal period closes 11:59 PM US Pacific Time | May 15

Meeting Notes in red

Loss of electric power and internet service happens more frequently and poses at least an equal — if not greater threat — to public safety.  So why does neither the National Electrical Code or the National Electrical Safety Code integrate reliability into their core requirements?  Reliability requirements appear in a network of related documents, either referenced, or incorporated by reference; sometimes automatically, sometimes not.

NESC Main Committee Membership: Page xii

Apart from the IEEE as the accredited standards developer, there are no “pure non-government user-interests” on this committee; although ANSI’s Essential Requirements for balance of interests provides highly nuanced interpretation.  The Classifications on Page xiii represents due diligence on meeting balance of interest requirements.

In our case, we are one of many large universities that usually own district energy plants that both generate and purchase generate electric power (as sometimes provide var support to utilities when necessary; as during the August 2003 North American outage).  For University of Michigan, for example, has about 20 service points at 4.8 – 120 kV.  Its Central Power Plant is the largest cogeneration plant on the DTE system.

Contents: Page xxviii | PDF Page 29

Absence of internet service is at least as much a hazard, and more frequent, than downed wires.   Is there a standards solution?  Consideration of interoperability of internet service power supported on utility poles  should track in the next revision.

No mention of any reliability related IEEE reliability standards in the present edition.  Why is this?

Section 2: Definitions of Special Terms | PDF Page 46

In the 2023 Handbook, the term “reliability” shows up 34 times.

availability (from Bob Arno’s IEEE 3006-series and IEEE 493 Gold Book revision)

reliability (Bob Arno)

utility (PDF Page 57)

communication | PDF Page 47

list of terms defined in the 2023 National Electrical Code that are new and relevant to this revision: (Article 100 NEC)

Bonding jumper, system and supply

Survivability of communication network signaling

Fiber optic cable mounted on common poles with a medium voltage overhead line standardizing procedure

municipal broadband network, digital subscriber line, surveillance cameras

wireless communication system

010. Purpose | PDF Page 40

Looks like improvement since last edition.  Suggest explicit Informational Note, as in the NEC, using “reliability” and referring to other agencies.  “Abnormal events” could be tighter and refer to other standards for abnormal, steady-state events.   The clarification of purpose is welcomed although a great deal remains uncovered by other best practice literature; though that can be repaired in this edition.

Legacy of shared circuit path standards. Should provisions be made for municipal surveillance, traffic and vehicle control infrastructure.  What would that look like?

011. Scope | Covered PDF Page 40

3. Utility facilities and functions of utilities that either (a) generate energy by conversion from
some other form of energy such as, but not limited to, fossil fuel, chemical, electrochemical,
nuclear, solar, mechanical, wind or hydraulic or communication signals, or accept energy or
communication signals from another entity, or (b) provide that energy or communication
signals through a delivery point to another entity.

5. Utility facilities and functions on the line side of the service point supplied by underground or
overhead conductors maintained and/or installed under exclusive control of utilities located on
public or private property in accordance with legally established easements or rights-of-way,
contracts, other agreements (written or by conditions of service), or as authorized by a
regulating or controlling body.
NOTE: Agreements to locate utility facilities on property may be required where easements are either
(a) not obtainable (such as locating utility facilities on existing rights-of-way of railroads or other entities,
military bases, federal lands, Native American reservations, lands controlled by a port authority, or other
governmental agency), or (b) not necessary (such as locating facilities necessary for requested service to a
site).

012. General Rules | Covered PDF Page 42

For all particulars not specified, but within the scope of these rules, as stated in Rule 011A, design,
construction, operation, and maintenance should be done in accordance with accepted good practice
for the given local conditions known at the time by those responsible for the communication or
supply lines and equipment

General purpose clause could use some work since no definition of “accepted good practice”.  Refer to IEEE bibliography.

 

Section 2: Definition of special terms | PDF Page 46

Recommendations elsewhere should track here.

 The word “installation” appears 256 times and is generally understood in context by experts.  Suggest borrow from NEC to clarify our concern for including co-linear/communication circuits. 

conduit.  exclusive control, lines, photovoltaic, NEC interactive. qualified

Section 3: Reference

NFPA 70®, National Electrical Code® (NEC®). [Rules 011B4 NOTE, 099C NOTE 1, and 127

IEEE Std 4™-1995, IEEE Standard Techniques for High-Voltage Testing. [Table 410-2 and Table 410-3]
IEEE Std 516™-2009, IEEE Guide for Maintenance Methods on Energized Power-Lines. [Rules 441A4
NOTE 2, 446B1, and 446D3 NOTE, and Table 441-5, Footnote 4]
IEEE Std 1427™-2006, IEEE Guide for Recommended Electrical Clearances and Insulation Levels in
Air-Insulated Electrical Power Substations. [Rule 124A1 NOTE, Table 124-1, 176 NOTE, and 177 NOTE]
IEEE Std 1584™-2002, IEEE Guide for Performing Arc Flash Hazard Calculations. [Table 410-1,
Footnotes 1, 3, 6, and 14]
IEEE Std C62.82.1™-2010, IEEE Standard for Insulation Coordination—Definitions, Principles, and Rules.
[Table 124-1 Footnote 5]

Add references to Gold Book, 1386, etc. IEC since multinationals conform.

 

Safety Rules for the Installation and Maintenance of Overhead Electric Supply and Communication Line | PDF Page 111

Has anyone confirmed that these tables match NEC Table 495.24 lately?  If it helps: there were no meaningful changes in the 2023 NEC in Article 495, the high voltage article

Section 11. Protective arrangements in electric supply stations | PDF Page 77

A safety sign shall be displayed on or beside the door or gate at each entrance. For fenced or
walled electric supply stations without roofs, a safety sign shall be displayed on each exterior
side of the fenced or wall enclosure. Where the station is entirely enclosed by walls and roof, a
safety sign is required only at ground level entrances. Where entrance is gained through
sequential doors, the safety sign should be located at the inner door position.  (A clarification but no change.  See Standards Michigan 2017 proposals)

Recommend that all oil-filled cans be removed and services upgraded through energy regulations with new kVA ratings

Section 12: Installation and maintenance of equipment

093. Grounding conductor and means of connection

Fences
The grounding conductor for fences required to be effectively grounded by other parts of this
Code shall meet the requirements of Rule 093C5 or shall be steel wire not smaller than Stl WG
No. 5.

D. Guarding and protection | PDF Page 67

124. Guarding live parts| PDF Page 85

Propose roofs required for exterior installations

Part 2. Safety Rules for the Installation and Maintenance of Overhead Electric Supply and Communication Line | Page 72

Section 22. Relations between various classes of lines and equipment | Page 80

222. Joint use of structures | Page 82

Where the practice of joint use is mutually agreed upon by the affected utilities, facilities shall be subject to the appropriate grade of construction specified in Section 24. Joint use of structures should be
considered for circuits along highways, roads, streets, and alleys. The choice between joint use of structures and separate lines shall be determined through cooperative consideration with other joint
users of all the factors involved, including the character of circuits, worker safety, the total number and weight of conductors, tree conditions, number and location of branches and service drops, structure
conflicts, availability of right-of-way, etc.

Reliability considerations for sustaining internet service when power supply is absent. 

Par2 Section 20 Safety Rules for the Installation and Maintenance of Overhead Electric Supply and Communication Line | PDF Page 111

Has anyone confirmed that these tables match NEC Table 495.24 lately?

Part 3. Safety Rules for the Installation and Maintenance of Underground Electric Supply and Communication Lines | Page 220

Renewable energy for internet access

311. Installation and maintenance

A. Persons responsible for underground facilities shall be able to indicate the location of their facilities.
B. Reasonable advance notice should be given to owners or operators of other proximate facilities that
may be adversely affected by new construction or changes in existing facilities.
C. For emergency installations, supply and communication cables may be laid directly on grade if the
cables do not unreasonably obstruct pedestrian or vehicular traffic and either:

1. The cables are covered, enclosed, or otherwise protected, or
2. The locations of the cables are conspicuous.
Supply cables operating above 600 V shall meet either Rule 230C or 350B.
NOTE: See Rules 014B2 and 230A2d.

Part 4. Work Rules for the Operation of Electric Supply and Communications Lines and Equipment | PDF Page 289

When and why was the term “Work” added to the title of this section?   

Core text for the definition of wireless communication system reliability

 


Appendix E Bibliography| PDF Page 355

 

 

 

Index | PDF Page 398

 


The word “reliability” appears only three times.  Should it track in the NESC or should it track in individual state requirements.  So neither the NEC nor the NESC couples closely with power and communication reliability; despite the enormity and speed of research.

 

Electric Service Metering & Billing

Electrical Safety

Today at 16:00 UTC we review best practice for engineering and installing the point of common coupling between an electrical service provider its and an purchasing — under the purview of NEC CMP-10.

Committee topical purviews change cycle-to-cycle.  Here’s the transcript for today’s session:  CMP-10 Second Draft Report (368 pages)

Use the login credentials at the upper right of our home page.

The relevant passages of the National Electrical Code are found in Article 230 and Article 495.  We calibrate our attention with the documents linked below.  These are only representative guidelines:

University of Michigan Medium Voltage Electrical Distribution

Texas A&M University Medium Voltage Power Systems

University of Florida Medium Voltage Electrical Distribution

Representative standards for regulated utilities for purchased power:

Detroit Edison Primary Service Standards (Green Book)

American Electric Power: Requirements for Electrical Services

Pacific Gas & Electric Primary Service Requirements

The IEEE Education & Healthcare Facilities Committee curates a library of documents similar to those linked above.

Design of Electrical Services for Buildings

We are in the process of preparing new (original, and sometimes recycled) proposals for the 2026 National Electrical Code, with the work of Code Panel 10 of particular relevance to today’s topic:

2026 National Electrical Code Workspace

First Draft Meetings: January 15-26, 2024 in Charleston, South Carolina


Electrical meter billing standards are generally regulated at the state or local level, with guidelines provided by public utility commissions or similar regulatory bodies.  These tariff sheets are among the oldest in the world.  There are some common standards for billing and metering practices, including:

  1. Meter Types: There are various types of meters used to measure electricity consumption, including analog (mechanical) meters, digital meters, and smart meters. Smart meters are becoming more common and allow for more accurate and real-time billing.
  2. Billing Methodology:
    • Residential Rates: Most residential customers are billed based on kilowatt-hours (kWh) of electricity used, which is the standard unit of energy.
    • Demand Charges: Some commercial and industrial customers are also subject to demand charges, which are based on the peak demand (the highest amount of power drawn at any one point during the billing period).
    • Time-of-Use Rates: Some utilities offer time-of-use (TOU) pricing, where electricity costs vary depending on the time of day or season. For example, electricity may be cheaper during off-peak hours and more expensive during peak hours.
  3. Meter Reading and Billing Cycle:
    • Monthly Billing: Typically, customers receive a bill once a month, based on the reading of the electricity meter.
    • Estimation: If a meter reading is not available, some utilities may estimate usage based on historical patterns or average usage.
    • Smart Meter Readings: With smart meters, some utilities can provide daily or even hourly usage data, leading to more precise billing.
  4. Meter Standards: The standards for electrical meters, including their accuracy and certification, are set by national organizations like the National Institute of Standards and Technology (NIST) and the American National Standards Institute (ANSI). Meters must meet these standards to ensure they are accurate and reliable.
  5. Utility Commission Regulations: Each state has a utility commission (such as the California Public Utilities Commission, the Texas Public Utility Commission, etc.) that regulates the rates and billing practices of electricity providers. These commissions ensure that rates are fair and that utilities follow proper procedures for meter readings, billing cycles, and customer service
  6. Large University “Utilities”.   Large colleges and universities that generate and distribute some or all of their electric power consumption have developed practices to distribute the cost of electricity supply to buildings.  We will cover comparative utility billing practices in a dedicated colloquium sometime in 2025.

Michigan Public Service Commission | Consumer’s Energy Customer Billing Rules

Campus Outdoor Lighting

“The Starry Night” | Vincent van Gogh

The IEEE Education & Healthcare Facilities Committee has completed a chapter on recommended practice for designing, building, operating and maintaining campus exterior lighting systems in the forthcoming IEEE 3001.9 Recommended Practice for the Design of Power Systems for Supplying Commercial and Industrial Lighting Systems; a new IEEE Standards Association title inspired by, and derived from, the legacy “IEEE Red Book“.  The entire IEEE Color Book suite is in the process of being replaced by the IEEE 3000 Standards Collection™  which offers faster-moving and more scaleable, guidance to campus power system designers.

Campus exterior lighting systems generally run in the 100 to 10,000 fixture range and are, arguably, the most visible characteristic of public safety infrastructure.   Some major research universities have exterior lighting systems that are larger and more complex than cooperative and municipal power company lighting systems which are regulated by public service commissions.

While there has been considerable expertise in developing illumination concepts by the National Electrical Manufacturers Association, Illumination Engineering Society, the American Society of Heating and Refrigeration Engineers, the International Electrotechnical Commission and the International Commission on Illumination, none of them contribute to leading practice discovery for the actual power chain for these large scale systems on a college campus.   The standard of care has been borrowed, somewhat anecdotally, from public utility community lighting system practice.  These concepts need to be revisited as the emergent #SmartCampus takes shape.

Electrical power professionals who service the education and university-affiliated healthcare facility industry should communicate directly with Mike Anthony (maanthon@umich.edu) or Jim Harvey (jharvey@umich.edu).  This project is also on the standing agenda of the IEEE E&H committee which meets online 4 times monthly — every other Tuesday — in European and American time zones.  Login credentials are available on its draft agenda page.

Issue: [15-199]

Category: Electrical, Public Safety, Architectural, #SmartCampus, Space Planning, Risk Management

Contact: Mike Anthony, Kane Howard, Jim Harvey, Dev Paul, Steven Townsend, Kane Howard


LEARN MORE:

Pathway Illumination

“Nighthawks” 1942 Edward Hopper

The Illumination Engineering Society is one of the first names in standards-setting organizations with a catalog routinely referenced in design guidelines and construction projects.  Because of the money flow into illumination technologies worldwide the IES occupies a domain that is relatively crowded:

  • National Electrical Manufacturers and Medical Imaging Association; whose interest lies in leveling the playing field for about 300 electrical equipment manufacturers
  • Institute for Electrical and Electronic Engineers; whose interest lies in the research activity in seeing sciences, the luminescence sources and the power chain
  • American Society of Heating and Refrigeration Engineers; whose interest lies in energy conservation
  • National Fire Protection Association; whose interest lies in fire safety of lighting systems within building premises.
  • International Code Council; whose interest lies in pulling together all of the relevant standards for lighting egress paths of the built environment
  • International Electrotechnical Commission; whose interest lies in the administration of global electrical and electronic technologies
  • International Commission on Illumination; the international authority on light, illumination, colour, and colour spaces

There are others.  With illumination power requirement on a downward trajectory where footcandles can be driven at information & communication technology voltage and current levels; we find relatively new entrants into the market with deep pockets and for good reason.  In a typical building, the interior lighting load is the major electrical load (on the order of 40 percent) and a major contributor to the functionality of the building.  There are a number of other trade associations that are participants in research and open source standards for faster moving parts of the illumination science.  We will cover these in future, related posts.

Last year a new standardization project was launched by the IES. From the project prospectus:

IES LP-2-201x, Designing Quality Lighting for People in Outdoor Environments (new standard)

Project Need: This document is not intended to supersede existing IES application RPs, rather it will link the various documents together, augmenting them in subject areas not otherwise covered, including but not limited to sidewalks, bikepaths, pedestrian paths, parks, outdoor malls, pedestrian-only business districts, plazas, amphitheaters, large outdoor gathering areas, campuses, pedestrian bridges, and pedestrian underpasses.

Stakeholders: Lighting practitioners, electrical engineers, civic planners, civil engineers, architects, community-based planning groups, general public.  Lighting recommendations for non-vehicular pedestrian applications using recommendations beyond illuminance only, which ultimately fails to provide a complete guideline for the visual experience of pedestrian-based tasks. The RP will be a comprehensive approach for light levels, glare, adaptation, spectrum, and contrast while addressing safety, timing, and perceived security. Application of these recommendations will ultimately enhance the pedestrian’s visual experience while also respecting the environment.

Soon to be released, a related product covering technical specifics of a familiar battleground — lighting controls:

IES LP-12 Lighting Practice: IoT Connected Lighting

The consultation closed May 24th and the agenda of the committee writing this standard is being administered.  Very often technical committees are receptive to new ideas after a comment deadline if those ideas are submitted to a committee member directly.   We invite anyone with an interest in this topic to click in to any of our daily colloquia to begin that process.

Not far into the future: individually controlled luminaires responsive to the use of campus pathways.  There are already some pilot projects on higher education campuses.

IES Standards in Public Review

A few other technical committees relevant to educational communities should be identified, though we will sort through the standards setting activity in separate posts:

Edu-Lib-Ofc Lighting Committee

Outdoor Environmental Lighting Committee

Outdoor Public Spaces Committee

Roadway Lighting Committee  (Many large research universities own miles of roads)

We always encourage direct participation by space planners, workpoint experts and academic unit facility managers in IES standards development process.  Contact: Patricia McGillicuddy, (917) 913-0027, pmcgillicuddy@ies.org. 120 Wall Street, Floor 17, New York, NY.

We  coordinate most of our electrotechnology standards advocacy with the IEEE Education & Healthcare Facilities Committee which meets 4 times monthly in European and American time zones.  Its meeting agendas and login credentials are available on its website.   Since illumination technologies are present in all spaces in education communities, IES consensus products will appear on the standing agenda of most disciplines.  See our CALENDAR.

Issue: [19-50]

Category: Electrical, Space Planning

Colleagues: Mike Anthony, Jim Harvey, Kane Howard, Glenn Keates, George Reiher

*We find that when the SSO has heavy manufacturer support, its standards development facility lies in the upper-quality tier.

Data Center Wiring

The bookwheel, also known as a revolving bookcase, was invented by an Italian scholar and polymath named Agostino Ramelli. Ramelli was born in 1531 in Ponte Tresa, a town in present-day Italy, and he lived during the Renaissance period.

Ramelli’s invention, described in his work titled “Le diverse et artificiose machine del capitano Agostino Ramelli” (The Various and Ingenious Machines of Captain Agostino Ramelli), was published in 1588. This book showcased a collection of 195 mechanical devices.  

Ramelli’s work contributed to the growing interest in mechanical inventions during the Renaissance period. His bookwheel design remains a fascinating example of early engineering and ingenuity, highlighting the desire for knowledge and practical solutions in the pursuit of learning and scholarly endeavors.

2026 NEC Articles 645-646-647 Information Technology Equipment, et. al First Draft Report

2026 NEC Articles 645-646-647 Information Technology Equipment, et. al Second Draft Report

“Bookwheel” Early Data Center

The standard of care for wiring safety for data centers —  a continually expanding presence in education communities even before the pandemic  — is established in National Electrical Code Articles 645 (Information Technology Equipment), Article 646 (Modular Data Centers) and Article 647 (Sensitive Electronic Equipment).   You will notice that these articles cover the topic comprehensively and bear the imprint of competing Producer-Interest groups.  There are no User-Interest representatives on Code-Making Panel 12 that represent the final fiduciary in education communities even though education communities are one of the largest markets for information and communication technology systems.

The current version of NFPA 70 is linked below:

2026 National Electrical Code

2023 National Electrical Code

Transcripts  of technical committee action during the 2026 revision (CMP-16) are linked below because they will inform our recommendations for the 2026 National Electrical Code.  Keep in mind that the Technical Correlating Committee is moving content around the Code in order to make the NEC easier to use by experts.

CMP-16 First Draft Report | Public Input with Committee Response 

CMP-16 Second Draft Report

The transcripts of technical committee action during the 2023 revision are linked below because they will inform our recommendations for the 2026 National Electrical Code.

Code‐Making Panel 12 Public Input Report

Code-Making Panel 12 Public Comment Report

National Electrical Code CMP-12

We will use these in our exploration of what we might propose for improvements in the 2026 revision.  Public comment on the First Draft of the 2026 Edition will be received until August 28th.

The issues that have been in play in these articles of the NEC are familiar to veterans of the “food fight” – occupancy classification, cable specifications, fire protection, ventilation, energy consumption, surge protection, licensing of engineers. etc.  We look for market-making excesses by opposing stakeholders that seek to limit their risk while raising the (financial) risk to education communities.

We encourage our colleagues to participate in the NFPA code development process directly.  We also encourage stakeholders in education communities — students, faculty and staff  to join us during any of the teleconferences we co-host with the IEEE Education & Healthcare Facilities Committee 4 times monthly in both European and American time zones.   See our CALENDAR for the next online meeting.

"One day ladies will take their computers for walks in the park and tell each other, "My little computer said such a funny thing this morning" - Alan Turing

 

Related standards:

NFPA 75: Standard for the Fire Protection of Information Technology Equipment

2024 International Building Code: Special Detailed Requirements Based on Occupancy and Use

2024 International Building Code: Section 304.1 Business Group B

National Electrical Definitions

NFPA Glossary of Terms

International Building Code Chapter 2: Definitions

International Electrotechnical Commission: Electropedia

Because electrotechnology changes continually, definitions (vocabulary) in its best practice literature changes continually; not unlike any language on earth that adapts to the moment and place.

The changes reflect changes in technology or changes in how the technology works in practice; even how the manufacturers create adaptations to field conditions by combining functions.   Any smart electrical component has a digital language embedded in it, for example.

Consider the 2023 National Electrical Code.  Apart from many others the NEC will contain a major change to Article 100 (Definitions); the subject of elevated debate over the past three years.

When we refer “language” we must distinguish between formal language, informal language, colloquial language and dialect which may differ the language spoken, language written at the office and language used on the job site.  “Terms of art”

2026 National Electrical Code | CMP-1 Second Draft Report 

FREE ACCESS: 2020 National Electrical Code (NFPA 70)

2023 NEC Public Input Report CMP-1 (868 pages)

2023 NEC Second Draft Public Comment Report (914 pages)

Are these terms (or, “terms of art”) best understood in context (upstream articles in Chapters 4 through 8) — or should they be adjudicated by the 14 Principals of Code Making Panel 1?   The answer will arrive in the fullness of time.   Many changes to the National Electrical Code require more than one cycle to stabilize.

Code Making Panel 1 has always been the heaviest of all NEC panels.  As explained n our ABOUT, the University of Michigan held a vote in CMP-1 for 20+ years (11 revision cycles) before moving to the healthcare facilities committee for the IEEE Education & Healthcare Facilities Committee.  Standards Michigan continues its involvement on behalf of the US education facility industry — the second largest building construction market.  There is no other pure user-interest voice on any technical committee; although in some cases consulting companies are retained for special purposes.

To serve the purpose of making NFPA 70 more “useable” we respect the Standards Council decision to make this change if it contributes to the viability of the NFPA business model.  We get to say this because no other trade association comes close to having as enduring and as strong a voice:  NFPA stands above all other US-based SDO’s in fairness and consideration of its constituency.  The electrical safety community in the United States is a mighty tough crowd.

If the change does not work, or work well enough, nothing should prohibit reversing the trend toward “re-centralizing” — or “de-centralizing” the definitions.

Public comment on the First Draft of the 2026 Edition will be received until August 28, 2024. 

Technical Committees meet during the last half of October to respond to public comment on the First Draft of the 2026 National Electrical Code. 

Electrical Contractor: Round 1 of the 2023 NEC: A summary of proposed changes (Mark Earley, July 15, 2021)

Electrical Contractor: 2023 Code Article and Definition Revisions: Accepting (NEC) change, part 2 (Mark Earley, March 15, 2022)

“Tea, Earl Grey, Hot”

The command issued by the character Captain Jean-Luc Picard in the television series “Star Trek: The Next Generation” finds its way into the archive of photographs of Nobel Laureates consorting with politicians at the University of Michigan and elsewhere.

Attendees of the Theoretical Physics Colloquium at the University of Michigan in 1929.

American Institute of Physics Archive

Ex Libris Universum

…”There’s not good math explaining forget the physics of it.  Math explaining the behavior of complex systems yeah and that to me is both exciting and paralyzing like we’re at very early days of understanding you know how complicated and fascinating things emerge from simple rules…” — Peter Woit [1:16:00]

Coffee & Tea Standards


Since 1936 the Brown Jug has been the ancestral trough of generations of University of Michigan students and faculty — notably. Donald Glaser (inventor of the bubble chamber) and Samuel C. C. Ting (Nobel Laureate) whose offices at Randall Laboratory were a 2-minute walk around the corner from The Brown Jug.  As the lore goes, the inspiration happened whilst watching beer bubbles one ordinary TGIF Friday.

The Brown Jug is named after the Michigan vs Minnesota football trophy, which is the oldest in college football.

2029 National Electrical Code

Public input on the 2029 Revision will be received until April 9th. Over the next weeks and months — typically meeting twice a day every Tuesday — we will pull forward our previous proposals and draft original proposals relevant to the education and healthcare electrotechnical infrastructure of educational settlements.  Link to Proposed Reorganization.

NFPA 70 2029 Revision Mike Anthony IEEE and Standards Michigan public input April 2026

2029 National Electrical Code Panel 1

2029 National Electrical Code Panel 3

 


Photo at 2723 State Street Office*

Mike was part of the National Electrical Code Quarter Century Club but was at another conference and not able to receive the award at the June conference.  University of Michigan support began in 1993.  IEEE support began in 2014.

*New Office (a short walk across the street) starting October 1: 455 East Eisenhower, Ann Arbor, MI 48108


Current Issues and Recent Research

Today we examine Second Draft transcripts of the Special Equipment Chapter 6 (CMP-12) and product inspection, testing and certification listings that appear Annex A (CMP-1).

 


Once every eighteen months we spend a week drilling into the National Electrical Code by submitting new proposals or comments on proposed revisions.  Today we review the actions taken by the technical committees on the First Draft.   Responses to committee actions will be received until August 26th.

2026 National Electrical Code Workspace


Premise Wiring

Interconnected Electric Power Production Sources “Microgrids”

National Electrical Definitions

Kitchen Wiring

Solarvoltaic PV Systems

Hospital Plug Load

Data Center Wiring

Electrical Inspector Professional Qualifications

Critical Operations Power Systems

Arenas, Lecture Halls & Theaters

Appliances

Emergency and Standby Power Systems

Luminaires, Lampholders, and Lamps

Electric Vehicle Power Transfer System

Art, Design & Fashion Studios

Wiring for Luminaires in High Ceiling Occupancies

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