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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:

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

Power Management For Data Centers Challenges And Opportunities

Power Management For Data Centers Challenges And Opportunities

Erling Hesla and Robert D. Giese

Abstract:  This paper presents a broad view of management of design and implementation of power systems for Data Centers. The paper outlines many challenges that are present because of the demanding requirements of Data Centers both in design and management, then introduces opportunities that recent technological advances have made possible. This paper presents several new approaches of ownership and responsibilities that directly affect financial viability of the Data Center.

IEEE Education & Healthcare Facility Electrotechnology 

IEEE Awards: Erling Hesla

Design of a gateway for ubiquitous classroom

Electrical Resource Adequacy

Gallery: Planetariums

Molėtai Astronomical Observatory

Energy Standard for Data Centers

Consulting-Specifying Engineer (March 4, 2025): Why and how to adopt the IECC for energy-efficient designs

2024 Update to ASHRAE Position Statements

List of Titles, Scopes and Purposes of the ASHRAE Catalog

Public Review Draft Standards

The parent title of this standard is ASHRAE Standard 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings  and is continually under revision; frequently appearing in electrical engineering design guidelines, construction specifications, commissioning and O&M titles in our industry and others.

ASHRAE 90.4 defines an alternate compliance path, specific to data centers, while the compliance requirements for “non-data center” components are contained in ASHRAE 90.1 .  The 90.4 structure also streamlines the ongoing maintenance process as well ensures that Standards 90.1 and 90.4 stay in their respective lanes to avoid any overlap and redundancies relating to the technical and administrative boundaries.  Updates to ASHRAE 90.1 will still include the alternate compliance path defined in ASHRAE 90.4. Conversely the 2022 Edition of 90.4-2022 refers to ASHRAE 90.1-2022; cross-referencing one another synchronously

Links to noteworthy coverage from expert agencies on the 2022 revisions:

Addendum g modifies Sections 3 and 6 to support the regulation of process heat and process ventilation

HPC Data Center Cooling Design Considerations

ASHRAE standard 90.4 updates emphasize green energy

ASHRAE updated its standard for data centers

How to Design a Data Center Cooling System for ASHRAE 90.4

Designing a Data Center with Computer Software Modeling

This title resides on the standing agenda of our Infotech 400 colloquium; hosted several times per year and as close coupled with the annual meetings of ASHRAE International as possible.  Technical committees generally meet during these meetings make decisions about the ASHRAE catalog.  The next all committee conference will be hosted January 20-24, 2024 in Chicago.  As always we encourage education industry facility managers, energy conservation workgroups and sustainability professionals to participate directly in the ASHRAE consensus standard development process.  It is one of the better facilities out there.

Start at ASHRAE’s public commenting facility:

Online Standards Actions & Public Review Drafts

Energy Standard for *Sites* and Buildings

Update: May 30, 2023

Proposed Addendum g makes changes to definitions were modified in section 3 and mandatory language in Section 6 to support the regulation of process heat and process ventilation was moved in the section for clarity. Other changes are added based on comments from the first public review including changes to informative notes.

Consultation closes June 4th

Update: February 10, 2023

The most actively managed consensus standard for data center energy supply operating in education communities (and most others) is not published by the IEEE but rather by ASHRAE International — ASHRAE 90.4 Energy Standard for Data Centers (2019).  It is not required to be a free access title although anyone may participate in its development.   It is copyrighted and ready for purchase but, for our purpose here, we need only examine its scope and purpose.   A superceded version of 90.4 is available in the link below:

Third ISC Public Review Draft (January 2016)

Noteworthy: The heavy dependence on IEEE power chain standards as seen in the Appendix and Chapter 8.  Recent errata are linked below:

https://www.ashrae.org/file%20library/technical%20resources/standards%20and%20guidelines/standards%20errata/standards/90.4-2016errata-5-31-2018-.pdf

https://www.ashrae.org/file%20library/technical%20resources/standards%20and%20guidelines/standards%20errata/standards/90.4-2019errata-3-23-2021-.pdf

We provide the foregoing links for a deeper dive “into the weeds”.  Another addendum has been released for consultation; largely administrative:

ASHRAE 90.4 | Pages 60-61 | Consultation closes January 15, 2023.

It is likely that the technical committee charged with updating this standard are already at work preparing an updated version that will supercede the 2019 Edition.  CLICK HERE for a listing of Project Committee Interim Meetings.

We maintain many titles from the ASHRAE catalog on the standing agenda of our Mechanical, Energy 200/400, Data and Cloud teleconferences.   See our CALENDAR for the next online meeting; open to everyone.

Originally posted Summer 2020.

 

ASHRAE International has released four new addenda to its energy conservation consensus document ASHRAE 90.4-2016 Energy Standard for Data Centers.  This document establishes the minimum energy efficiency requirements of data centers for design and construction, for the creation of a plan for operation and maintenance and for utilization of on-site or off-site renewable energy resources.

It is a relatively new document more fully explained in an article published by ASHRAE in 2016 (Click here).   The addenda described briefly:

Addendum a  – clarifies existing requirements in Section 6.5 as well as introduce new provisions to encourage heat recovery within data centers.

Addendum b  – clarifies existing requirements in Sections 6 and 11 and to provide guidance for taking credit for renewable energy systems.

Addendum d  – a response to a Request for Interpretation on the 90.4 consideration of DieselRotary UPS Systems (DRUPS) and the corresponding accounting of these systems in the Electrical Loss Component (ELC). In crafting the IC, the committee also identified several marginal changes to 90.4 definitions and passages in Section 8 that would add further clarity to the issue. This addendum contains the proposed changes for that aim as well as other minor changes to correct spelling or text errors, incorporate the latest ELC values into Section 11, and to refresh information in the Normative Reference.

Addendum e adds language to Section 11 intended to clarify how compliance with Standard 90.4 can be achieved through the use of shared systems.

Comments are due September 6th.   Until this deadline you may review the changes and comment upon them by by CLICKING HERE

Universitat de Barcelona

 

Proposed Addendum g

Education facility managers, energy conservation workgroups and sustainability professionals are encouraged to participate directly in the ASHRAE standard development process.   Start at ASHRAE’s public commenting facility:

Online Standards Actions & Public Review Drafts

The ASHRAE catalog is a priority title in our practice.  This title appears on the standing agenda of our Infotech sessions.  See our CALENDAR for the next online meeting; open to everyone.

"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

Issue: [12-54]

Category: Telecommunications, Infotech, Energy

Colleagues: Mike Anthony, Robert G. Arno, Neal Dowling, Jim Harvey, Mike Hiler, Robert Schuerger, Larry Spielvogel

Workspace / ASHRAE

 

Why Daycare Is So Expensive In America

 

Bruin Café

“Europe today has little desire to reproduce itself,
fight for itself or even take its own side in a argument.
By the end of the lifespans of most people currently alive,
Europe will not be Europe and the peoples of Europe
will have lost the only place in the world we had to call home”

– Douglas Murry (“The Strange Death of Europe”)

Nederland

Large European universities such as Rijksuniversiteit Groningen are integrated into the fabric of the surrounding city. There are several ways in which this integration takes place:

Physical location: Many European universities are located in the heart of the city, often in historic buildings that have been repurposed for educational use. This central location means that the university is easily accessible to students and the general public, and that it is often surrounded by other cultural institutions, such as museums, theaters, and libraries.

Student life: The presence of a large student population can have a significant impact on the city’s culture and economy. Many European cities have developed a vibrant student culture, with cafes, bars, and other venues catering to the needs and interests of young people. This can help to create a sense of community between the university and the city, and can also bring economic benefits to local businesses.

Facilities Organization

Research and innovation: Large European universities are often at the forefront of research and innovation, and they can be important drivers of economic growth in the surrounding region. Many universities work closely with local businesses and industries, and they may also collaborate with other universities and research institutions in the area.

Cultural exchange: Universities can be important centers of cultural exchange, both for international students and for local residents. Many European universities offer language classes and other cultural programs that are open to the public, and they may also host lectures, concerts, and other events that are designed to promote cross-cultural understanding.

Overall, the integration of large European universities into the city is a complex and multifaceted process that can have a significant impact on the social, cultural, and economic life of the surrounding region.

The origin of brown cafés can be traced back to the 17th century, during the Dutch Golden Age. At that time, the Netherlands was a prosperous and influential trading nation, and Amsterdam was a bustling city with a thriving port. Sailors, merchants, and locals needed places to socialize, relax, and conduct business, leading to the emergence of taverns and pubs.

The term “brown café” is believed to have originated from the brownish stains that formed on the walls and ceilings due to tobacco smoke, candle soot, and other atmospheric elements. These stains gave the cafés a distinct, cozy ambiance and a sense of history.

Brown cafés became an integral part of Dutch culture, serving as communal gathering spots for people of all walks of life. They were places where locals would meet friends, engage in conversations, enjoy a drink, and sometimes play board games like chess or backgammon. Over time, brown cafés became associated with an authentic, unpretentious, and relaxed atmosphere, attracting both locals and tourists.

The unique charm of brown cafés lies in their preserved historical interiors, with old wooden furniture, dim lighting, and a wide selection of local beers and spirits. Many brown cafés still retain their original character, transporting visitors back in time and providing a cozy retreat from the hustle and bustle of modern life.

While the concept of brown cafés originated in the Netherlands, similar types of establishments can also be found in other European countries, such as Belgium and parts of Germany. However, the term “brown café” is primarily associated with the Dutch tradition of cozy, atmospheric, and convivial drinking establishments.

Of Beauty and Consolation: Roger Scruton

 

Nederland

Smart Grid Blockchains

Energy Academy

Media stúdzjes

Promovendus maakt recyclebaar rubber

 

Child Care Center Design

Child Care & Early Learning

2021 International Building Code: 308.5 Institutional Group I-4 Day Care Facilities

General Services Administration: Child Care Design Guide

Fiske Planetarium

Standards Colorado

The largest planetarium on a U.S. college or university campus is the Fiske Planetarium at the University of Colorado Boulder. The Fiske Planetarium features a 65-foot diameter dome and has undergone significant technological upgrades, making it one of the most advanced planetariums in the country. It offers a variety of shows, including live demonstrations and immersive experiences that simulate different cosmic phenomena and environments​ (CU Connections)​.

Observatories & Planetariums

Child Day Care

Group B Proposed Changes to the 2024 Editions Complete Monograph (2650 pages)

For today’s session note the proposals listed below:

ADM1-25 Part I (p. 61)

G39-25 Part I (p. 522)

G40-25 Part I (p. 527)

G39-25 Part II (p. 535)

G144-25 (p. 740)

EB7-25 (p. 1438)

Z1-25 (p. 2582)

2025 ICC Leadership Week + Hearings Committee Action Hearings – Group B #1 | April 26 – May 6 | Orlando, Florida

Link to April Committee Action Hearing Videos

2024 Complete Change Monograph (2658 Pages)

 

“Kindergarten” c. 1885 / Johann Sperl

Safety and sustainability for any facility begins with an understanding of who shall occupy the built environment and how.  University settings, with mixed-use phenomenon arising spontaneously and temporarily, often present challenges.   Educational communities are a convergent settings for families; day care facilities among them.  First principles regarding occupancy classifications for day care facilities appear in Section 308 of the International Building Code, Institutional Group I; linked below:

2018 International Building Code Section 308 Institutional Group I-4 (Superseded in some jurisdictions)

The ICC Institutional Group I-4 classification includes buildings and structures occupied by more than five persons of any age who received custodial care for fewer than 24 hours per day by persons other than parents or guardian, relatives by blood, marriage or adoption, and in a place other than the home of the person cared far.  This group includes both adult and child day care.

We maintain focus on child day care.  Many educational communities operate child day care enterprises for both academic study and/or as auxiliary (university employee benefit) enterprises.

Princeton University Child Care Center

Each of the International Code Council code development groups fetch back to a shared understanding of the nature of the facility; character of its occupants and prospective usage patterns.

The 2024 revision of the International Building code is in production now.   Ahead of the formal, market release of the Group A tranche of titles you can sample the safety concepts in play during this revision with an examination of the documents linked below:

2019 GROUP B PROPOSED CHANGES TO THE I-CODES ALBUQUERQUE COMMITTEE ACTION HEARINGS

2019 REPORT OF THE COMMITTEE ACTION HEARINGS ON THE 2018 EDITIONS OF THE GROUP B INTERNATIONAL CODES

Search on the terms “day care” and “daycare” in the link at the top of this page to get a sample of the prevailing concepts; use of such facilities as storm shelters, for example.

“The Country School” | Winslow Homer

We encourage our safety and sustainability colleagues to participate directly in the ICC Code Development process.   We slice horizontally through the disciplinary silos (“incumbent verticals”) created by hundreds of consensus product developers every week and we can say, upon considerable authority that the ICC consensus product development environment is one of the best in the world.  Privately developed standards (for use by public agencies) is a far better way to discover and promulgate leading practice than originating technical specifics from legislative bodies.   CLICK HERE to get started.  Contact Kimberly Paarlberg (kpaarlberg@iccsafe.org) for more information.

There are competitor consensus products in this space — Chapter 18 Day-Care Occupancies in NFPA 5000 Building Construction and Safety Code, for example; a title we maintain the standing agenda of our Model Building Code teleconferences.   It is developed from a different pool of expertise under a different due process regime.   See our CALENDAR for the next online meeting; open to everyone.

 

Issue: [18-166]

Category: Architectural, Healthcare Facilities, Facility Asset Management

Colleagues: Mike Anthony, Jim Harvey, Richard Robben

Recent concepts in play in transcripts:

  • Tempered water for public hand-washing facilities
  • Walking surfaces
  • Exit signage for non-resident, non-English speaking children
  • Fire rating of corridors 
  • Bathing privacy concepts
  • Water heater controls and monitoring; mixing valves

LEARN MORE:

cdpACCESS Hearing Video Streaming Service

 

“Mainely” Potato Salad

Standards Maine

Wild Blueberry Pie

 

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2723 South State Street | Suite 150
Ann Arbor, MI 48104 USA

888-746-3670

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