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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.

wash-u-data-center-expansion-new-5 washington university needs attrib 1921

dassi-banner-1600x600 strathclyde UK univ data center needs attribu data center 1924

jhu-mt-washington-data-center-2 john hopkins needs attrib 1921

wash-u-data-center-expansion-new-1 staff 1917

lg_ut_data_center_4 texas needs attrib 1921

"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

Kahn Health Care Pavilion

Our tenure in the 2026 National Electrical Code will result in at least a 10 percent reduction in the cost of building premise wiring — (mostly in the feeder power chain) — in healthcare facilities; based on the results of last month’s meeting of Code Making Panel 15.

Assuming electrical power infrastructure is 15 percent of in a $920 million facility like this (excluding interior moveable fixtures), that would have meant an approximate $14 million reduction in cost. That cost savings cannot be realized because it was designed to an earlier version of the National Electrical Code.

Facilities and Operations

National Electrical Code CMP-15

Healthcare Facilities Code

Hospital Plug Load

ORT America

$920M Michigan Medicine tower tops out, targets 2025 opening

Communication in the Presence of Noise

Claude E. Shannon

University of Michigan – Bell Telephone Laboratories – Massachusetts Institute of Technology

Abstract. A method is developed for representing any communication system geometrically. Messages and the corresponding signals are points in two “function spaces,” and the modulation process is a mapping of one space into the other. Using this representation, a number of results in communication theory are deduced concerning expansion and compression of bandwidth and the threshold effect. Formulas are found for the maximum rate of transmission of binary digits over a system when the signal is perturbed by various types of noise. Some of the properties of “ideal” systems which transmit at this maxmum rate are discussed. The equivalent number of binary digits per second for certain information sources is calculated.

CLICK HERE to order complete paper

Claude Shannon (30 April 1916 in Petoskey, Michigan, USA – 24 Feb 2001 in Medford, Massachusetts, USA) founded the subject of information theory and he proposed a linear schematic model of a communications system. His Master's thesis was on A Symbolic Analysis of Relay and… pic.twitter.com/d8q8og02oA

— ProfSK (@ProfSK5) February 25, 2026

Transmission Line Right-of-Way

Optimization of Transmission Line Right-of-Way

Ajaykumar Patel, et. al

School of Engineering & Technology, Central Queensland University, Melbourne, Australia

Abstract: A specific land is required to design the transmission line to construct effectively and maintain properly is called right of way of transmission line. It is calculated by considering mainly three electrical quantity related transmission line such as electric field, magnetic field and radio interference. Corona effect is considered for the evolution of right of way. By considering these parameters, it provide idea related to effect surrounding the area nearby transmission line.

The determination of transmission line right of way for public electric utilities typically involves a combination of legal considerations, regulatory requirements, environmental assessments, and public engagement:

Planning and Route Selection: Public electric utilities assess their power transmission needs based on factors such as population growth, energy demand, and infrastructure upgrades. They consider various potential routes and alternatives, taking into account factors like terrain, existing infrastructure, land use, and environmental sensitivities.

Environmental and Impact Assessments: Utilities conduct environmental and impact assessments to evaluate the potential effects of the proposed transmission line routes. These assessments examine factors such as wildlife habitats, endangered species, wetlands, water bodies, cultural or historical sites, and scenic landscapes. The purpose is to identify potential impacts and propose mitigation measures.

Regulatory and Permitting Process: Public utilities must comply with applicable laws and regulations governing transmission line development. This includes obtaining necessary permits and approvals from relevant regulatory agencies at the federal, state, and local levels. The requirements vary depending on the jurisdiction, but they often involve environmental agencies, land management agencies, and public utility commissions.

Public Engagement and Consultation: Utilities engage in public consultation and outreach to gather feedback from affected communities, landowners, and stakeholders. They conduct public hearings, open houses, and meetings to inform the public about the project, address concerns, and consider alternative routes suggested by the community. This engagement helps ensure transparency and public input in the decision-making process.

Negotiations and Eminent Domain: Utilities negotiate with landowners along the proposed transmission line route to acquire the necessary right of way. In some cases, if an agreement cannot be reached, utilities may exercise eminent domain, which is a legal process that allows them to acquire the land for public use while providing just compensation to the affected landowner.

Legal Framework: The legal framework for determining transmission line right of way varies by jurisdiction. Laws related to land use, zoning, environmental protection, and eminent domain play a role in defining the process and requirements for securing right of way.

Procedures vary depending on the country, state, or region where the transmission line is being developed. Local regulations, environmental conditions, and public engagement practices will influence the overall process.

Reducing the duration of right-of-way acquisition process for high voltage transmission power lines projects

Diminishing the Right of Way (RoW) With Multi Voltage Multi Terminal Transmission Tower

Information System for the Vegetation Control of Transmission Lines Right-of-way

Partially underground transmission circuits: safety issue for current and future power systems

2028 National Electrical Safety Code

IEEE Guide to the Installation of Overhead Transmission Line Conductors, IEEE Std. 524, 1992

Pacific Gas & Electric: Overhead Transmission Line Design Criteria

US Department of Agriculture Rural Utilities Service: Design Manual for High Voltage Transmission Lines

Gallery: Supercomputers & Data Centers

Pytorch | TensorFlow | JAX

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print(“Python”)

Wires

Ampere current flows through copper or aluminum conductor due to the movement of free electrons in response to an applied electric field of varying voltages. Each copper or aluminum contributes one free electron to the electron sea, creating a vast reservoir of mobile charge carriers. When a potential difference (voltage) is applied across the ends of the conductor, an electric field is established within the conductor. This field exerts a force on the free electrons, causing them to move in the direction of the electric field. The resulting current flow can be transformed into different forms depending on the nature of the device.

Heating: When current flows through a resistor, it encounters resistance, which causes the resistor to heat up. This is the principle behind electric heaters, toasters, and incandescent light bulbs.

Mechanical Work: Current flowing through an electric motor creates a magnetic field, which interacts with the magnetic field of the motor’s permanent magnets or electromagnets. This interaction generates a mechanical force, causing the motor to rotate. Thus, electrical energy is converted into mechanical energy; including sound.

Light: In an incandescent light bulb, a filament heats up ( a quantum phenomena) due to the current passing through it. This is an example of electrical energy being converted into light energy; including the chemical energy through light emitting diodes

Today we dwell on how conductors are specified and installed in building premise wiring systems primarily; with some attention to paths designed to carry current flowing through unwanted paths (ground faults, phase imbalance, etc). In the time we have we will review the present state of the best practice literature developed by the organizations listed below:

International Electrotechnical Commission

60304 Low voltage installations: Protection against electric shock

Institute of Electrical and Electronic Engineers

National Electrical Safety Code

Insulated Cable Engineers Association

International Association of Electrical Inspectors

National Fire Protection Association

National Electrical Code

Code Making Panel 6

Transcript of CMP-6 Proposals for 2026 NEC

Other organizations such as the National Electrical Manufacturers Association, ASTM International, Underwriter Laboratories, also set product and installation standards. Data center wiring; fiber-optic and low-voltage control wiring is covered in other colloquia (e.g. Infotech and Security) and coordinated with the IEEE Education & Healthcare Facilities Committee.