D2 Archives - Standards Michigan

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.

San Francisco State University facebook cover night california 1921 721

BROWN UNIVERSITY AERIAL NIGHT 1921 721 featured

Antelope_Valley_College_(3117769733) california nighttime parking lot wiki 1920 719

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Glendale Community College facebook cover night 1921 723

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.

Farm Electrical Power

Many land grant colleges and universities are stewards of agricultural facilities that require reliable electrical power that is safe and sustainable for livestock well off the core campus distribution grid. Today we examine the 2026 National Electrical Code safe electric service rules with an eye toward the close date of April 6th for public input on the 2029 NEC.

2029 National Electrical Code

Updated: September 3, 2024

ACTION ITEMS:

Article 547: Agricultural Buildings

Public Input with Responses from CMP-7 (Start at PDF Page 187)

Public Input with Responses from CMP-2 Article 220 Part V: Farm Load Calculations (Start at PDF Page 28)

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AnimalScienceImpact berry college student animal farm EDU 1919

Facilities-Impact berry college georgia students animal agri 1921 sunday

University of Kentucky College of Agriculture, Food and Environment farm student animal 1921

Warsaw University of Life Sciences students horse farm poland 1926

Many land grant colleges and universities are stewards of agricultural facilities that require reliable electrical power that is safe and sustainable for livestock and animal habitat for sporting.

FREE ACCESS: 2023 National Electrical Code

The premise wiring rules for hazardous university owned buildings have been relatively stable. Electrical professionals are guided by:

Farm Load Calculations of Part V of Article 220,
Corrosion mitigation with appropriate specification of power chain wiring
Stray voltage and the equipotential plane
Interactivity with regulated utility power sources.

Public response to the First Draft of the 2026 National Electrical Code will be received until August 28, 2024. We coordinate our approach to the entire NFPA electrical suite with the IEEE Education & Healthcare Facilities Committee which meets 4 times monthly. We typically refer to previous transcripts of technical committee actions to inform any changes (improvements) that we propose, if any.

2026 National Electrical Code Workspace

We maintain this issue on the standing agenda of our Power and Nourriture (Food) colloquia. Feel free to join us with the login credentials at the upper right of our home page.

More:

2028 National Electrical Safety Code

Stray Voltage: Sources and Solutions

University of Nebraska: G87-845 Electrical Systems for Agricultural Buildings (Recommended Practices)

Cornell University Agricultural Safety and Health Program

Mike Holt

Fred Hartwell

National Safety Council (22 deaths by electrocution on farms per 100,000 in 2017)

National Agricultural Safety Database

Gallery: Supercomputers & Data Centers

Pytorch | TensorFlow | JAX

454c656374726f746563686e6f6c6f6779

print(“Python”)

2028 National Electrical Safety Code

IEEE Standards Association Public Review

“Rain in Charleston” 1951 Thomas Fransioli

This title sets the standard of care for construction, operation and maintenance of power and telecommunication infrastructure on the supply side of the point of common coupling. It is the first title to contemplate when weather disasters happen; with most public utilities bound to its best practice assertions by statute. Pre-print of Change Proposals for changes to appear in 2028 Edition will be available by 1 July 2025; with 24 March 2026 as the close date for comments on proposed changes.

Project Introduction for the 2028 Edition (2:39 minutes)

NESC 2028 Revision Schedule

~~Changes proposals for the Edition will be received until 15 May 2024~~

Proposals for the 2028 National Electrical Safety Code

Project Workspace: Update Data Tables in IEEE Recommended Practice for the Design of Reliable Industrial and Commercial Power Systems

Painting by Linda Kortesoja Klenczar

Federal Energy Regulatory Commission: Electrical Resource Adequacy

Relevant Research

NARUC Position on NFPA (NEC) and IEEE (NESC) Harmonization

The standard of care for electrical safety at high and low voltage is set by both the NEC and the NESC. There are gaps, however (or, at best “gray areas”) — the result of two technical cultures: utility power culture and building fire safety culture. There is also tradition. Local system conditions and local adaptation of regulations vary. Where there is a gap; the more rigorous requirement should govern safety of the public and workers.

The 2023 National Electrical Safety Code (NESC)– an IEEE title often mistaken for NFPA’s National Electrical Code (NEC) — was released for public use about six months ago; its normal 5-year revision cycle interrupted by the circumstances of the pandemic. Compared with the copy cost of the NEC, the NESC is pricey, though appropriate for its target market — the electric utility industry. Because the 2023 revision has not been effectively “field tested” almost all of the available support literature is, effectively, “sell sheets” for pay-for seminars and written by authors presenting themselves as experts for the battalions of litigators supporting the US utility industry. Without the ability to sell the NESC to prospective “insiders” the NESC would not likely be commercial prospect for IEEE. As the lawsuits and violations and conformance interests make their mark in the fullness of time; we shall see the 2023 NESC “at work”.

IEEE Standards Association: Additional Information, Articles, Tools, and Resources Related to the NESC

Office of the President: Economic Benefits of Increasing Electric Grid Resilience to Weather Outages

Change Proposals are now being accepted from the public for revisions to the 2023 Edition of the National Electrical Safety Code® #NESC through 15 May 2024.

Learn more: https://t.co/jbxWtLPS6r pic.twitter.com/FRvZly1DoH

— IEEE Standards Association | IEEE SA (@IEEESA) April 11, 2024

“Science can amuse and fascinate us all, but it is engineering that changes the world.”
– Isaac Asimov pic.twitter.com/IDl3dWLVgn

— World of Engineering (@engineers_feed) February 26, 2024

Research Tracks:

NARUC Resolution Urging Collaboration Between the National Electrical Safety Code and the National Electrical Code

Reliability of Communication Systems needed for the autonomous vehicle transformation

Smart Grid Technologies:
- Investigating advanced technologies to enhance the efficiency, reliability, and sustainability of power grids.
Energy Storage Systems:
- Researching and developing new energy storage technologies to improve grid stability and accommodate intermittent renewable energy sources.
Distributed Generation Integration:
- Studying methods to seamlessly integrate distributed energy resources such as solar panels and wind turbines into the existing power grid.
Grid Resilience and Security:
- Exploring technologies and strategies to enhance the resilience of power grids against cyber-attacks, natural disasters, and other threats.
Demand Response Systems:
- Researching ways to improve demand-side management and develop systems that allow consumers to actively participate in grid balancing.
  University of Groningen: Smart Grid Blockchains
Advanced Sensors and Monitoring:
- Developing new sensor technologies and monitoring systems to enhance grid visibility, detect faults, and enable predictive maintenance.
Power Quality and Reliability:
- Studying methods to improve power quality, reduce voltage fluctuations, and enhance overall grid reliability.
Integration of Electric Vehicles (EVs):
- Researching the impact of widespread electric vehicle adoption on the grid and developing smart charging infrastructure.
Grid Automation and Control:
- Exploring advanced automation and control strategies to optimize grid operations, manage congestion, and improve overall system efficiency.
Campus Distribution Grid Selling and Buying

Relevant Technical Literature

IEC 60050 International Electrotechnical Vocabulary (IEV) – Part 601: Generation, transmission and distribution of electricity | April 16

Recommended Practice for Battery Management Systems in Energy Storage Applications | Comments Due March 26

Medical electrical equipment: basic safety and essential performance of medical beds for children | April 26

Standards:

Presentation | FERC-NERC-Regional Entity Joint Inquiry Into Winter Storm Elliott

IEEE Guide for Joint Use of Utility Poles with Wireline and/or Wireless Facilities

NESC Rule 250B and Reliability Based Design

NESC Requirements (Strength and Loading)

Engineering Analysis of Possible Effects of 2017 NESC Change Proposal to Remove 60′ Exemption

National Electrical Safety Code Workspace

Joint Use of Electric Power Transmission & Distribution Facilities and Equipment

A Framework to Quantify the Value of Operational Resilience for Electric Power Distribution Systems

August 14, 2003 Power Outage at the University of Michigan

Technologies for Interoperability in Microgrids for Energy Access

National Electrical Safety Code: Revision Cycles 1993 through 2023

February 24, 2023

The new code goes into effect 1 February 2023, but is now available for access on IEEE Xplore! Produced exclusively by IEEE, the National Electrical Safety Code (NESC) specifies best practices for the safety of electric supply and communication utility systems at both public and private utilities. The bibliography is expanding rapidly:

NESC 2023: Introduction to the National Electrical Safety Code

NESC 2023: Rule Changes

2023 National Electrical Safety Code® (NESC®) – Redline

2023 National Electrical Safety Code (NESC®) Handbook

NESC 2023: Safety Rules for Installation and Maintenance of Overhead Electric Supply

NESC 2023: Safety Rules for the Installation and Maintenance of Underground Electric Supply and Communication Lines

NESC 2023: Rules for Installation and Maintenance of Electric Supply Stations

IEEE Digital Library

Grid Edge Visibility: Gaps and a road map

~~October 31, 2022~~

The IEEE NESC technical committee has released a “fast track” review of proposed changes to fault-managed power system best practice:

CP5605 Provides a definition of new Fault Managed Power System (FMPS) circuits used for the powering of
communications equipment clearly defines what constitutes a FMPS circuit for the purposes of application of the NESC
Rules of 224 and 344
https://ieee-sa.imeetcentral.com/p/eAAAAAAASPXtAAAAADhMnPs

CP5606 Provides new definitions of Communication Lines to help ensure that Fault Managed Power Systems (FMPS)
circuits used for the exclusive powering of communications equipment are clearly identified as communications lines
and makes an explicit connection to Rule 224B where the applicable rules for such powering circuits are found.
https://ieee-sa.imeetcentral.com/p/eAAAAAAASPXpAAAAAFfvWIs

CP5607 The addition of this exception permits cables containing Fault Managed Power System (FMPS) circuits used for
the exclusive powering of communications equipment to be installed without a shield.
https://ieee-sa.imeetcentral.com/p/eAAAAAAASPXuAAAAAEEt3p4

CP5608 The addition of this exception permits cables containing Fault Managed Power System (FMPS) circuits used for
the exclusive powering of communications equipment to be installed without a shield.
https://ieee-sa.imeetcentral.com/p/eAAAAAAASPXvAAAAAGrzyeI

We refer them to the IEEE Education & Healthcare Facilities Committee for further action, if any.

August 5, 2022

We collaborate closely with the IEEE Education & Healthcare Facilities Committee (IEEE E&H) to negotiate the standard of care for power security on the #SmartCampus since many campus power systems are larger than publicly regulated utilities. Even when they are smaller, the guidance in building the premise wiring system — whether the premise is within a building, outside the building (in which the entire geography of the campus footprint is the premise), is inspired by IEEE Standards Association administrated technical committees.

Northeast Community College | Norfolk, Nebraska

Today we begin a list of noteworthy changes to be understood in the next few Power colloquia. See our CALENDAR for the next online meeting.

New rules 190 through 195 cover photovoltaic generating stations. Rule 116c adds an exception for short lengths of insulated power cables and short-circuit protection if the situation involves fewer than 1,000 volts.
Rule 320B has been revised to clarify separations that apply to communications and supply in different conduit systems.
Table 410-4 is based on the latest arc flash testing on live-front transformers.
Rule 092A adds an exception allowing protection, control, and safety battery systems to not be grounded.
Rules 234 B1, C1, D1 were revised to better present vertical and horizontal wind clearances, and to coordinate requirements with the new Table 234-7.
Rule 120A was revised to provide correction factors for clearances on higher elevations.
Table 253-1 has been revised to reduce the load factor for fiber-reinforced polymer components under wire tension—including dead ends—for Grade C construction.
Rule 410A now requires a specific radio-frequency safety program for employees who might be exposed.
In the Clearances section, as well as in the specification of the Grade of Construction in Table 242-1, the Code further clarifies the use of non-hazardous fiber optic cables as telecom providers continue to expand their networks.
Revisions in the Strength & Loading sections include modified Rule 250C, which addresses extreme wind loading for overhead lines. Two wind maps are now provided instead of the previous single one. A map for Grade B, the highest grade of construction, with a Mean Recurrence Interval (MRI) of 100 years (corresponding to a one percent annual probability of occurrence) is provided in place of the previous 50–90-year MRI map. For Grade C construction, a separate 50-year MRI (two percent annual probability of occurrence) map is now provided. In the previous Code, a factor was applied to the 50–90-year MRI map for application to Grade C.
Changes were also made to the method of determining the corresponding wind loads, consistent with the latest engineering practices as an example of a Code revision focused on public safety, the ground end of all anchor guys adjacent to regularly traveled pedestrian thoroughfares, such as sidewalks, and similar places where people can be found must include a substantial and conspicuous marker to help prevent accidents. The previous Code did not require the marking of every such anchor guy.
Significant revisions were made in Section 14 covering batteries. Previous editions of the code were based on lead-acid technology and batteries only used for backup power. The 2023 Code incorporates the new battery technologies and addresses energy storage and backup power.
A new Section 19 of the code covers photovoltaic generating stations, with sections addressing general codes, location, grounding configurations, vegetation management, DC overcurrent protection, and DC conductors. These new rules accommodate large-scale solar power projects.
In the Clearances section, all rules for wireless antenna structures have been consolidated in the equipment section (Rule 238 and 239), which makes the Code more user-friendly.
A new subcommittee was created focusing on generating stations, with the original subcommittee continuing to address substations.
A working group is investigating Fault Managed Power Systems (FMPS) cables as the technology may be used for 5G networks. The team is looking at possible impacts, including clearances and work rules.

After "slipping a pole" in its revision cadence (owed to the circumstances of the pandemic) the 2023 NESC is rolling out for incorporation by reference into public safety laws relevant to education communities with #WiseCampus ambitions.@ieee_pes @IEEESA https://t.co/7EaTBgxa8X pic.twitter.com/jPvZNYzWBi

— IEEECampus (@IEEECampus) August 5, 2022

February 18, 2021

Several proposals recommending improvements to the 2017 National Electrical Safety Code (NESC) were submitted to the IEEE subcommittees drafting the 2022 revision of the NESC. Some of the proposals deal with coordination with the National Electrical Code — which is now in its 2023 revision cycle. Keep in mind that that NESC is revised every 5 years at the moment; the NEC is revised every 3 years.

The original University of Michigan standards advocacy enterprise has been active in writing the NESC since the 2012 edition and set up a workspace for use by electrical professionals in the education industry. We will be using this workspace as the 2022 NESC continues along its developmental path:

IEEE 2022 NESC Workspace

The revision schedule — also revised in response to the circumstances of the pandemic — is linked below::

NESC 2023 Edition Revision Schedule*

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Carnegie_Mellon_University_as_seen_from_the_Cathedral_of_Learning aerial 1921 721 featured aerial

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loyola university chicago aerial 1921 721

The NESC is a standing item on the 4-times monthly teleconferences of the IEEE Education & Healthcare Facilities committee. The next online meeting is shown on the top menu of the IEEE E&H website:

IEEE E&H Committee

We have a copy of the first draft of the 2023 NESC and welcome anyone to join us for an online examination during any of Power & ICT teleconferences. See our CALENDAR for the next online meeting.

Business unit leaders, facility managers and electrical engineers working in the education facilities industry may be interested in the campus power system reliability database. Forced outages on large research campuses, for example, can have enterprise interruption cost of $100,000 to $1,000,000 per minute. The campus power system forced outage database discriminates between forced outages attributed to public utility interruptions and forced outages attributed to the university-owned power system. The E&H committee will convey some of the discipline applied by the IEEE 1366 technical committee into its study of campus power systems and, ultimately, setting a benchmark for the standard of care for large university power systems.

* The IEEE changed the nominal date of the next edition; likely owed to pandemic-related slowdown typical for most standards developing organizations.

Issue: [16-67]

Contact: Mike Anthony, Robert G. Arno, Lorne Clark, Nehad El-Sharif, Jim Harvey, Kane Howard, Joe Weber, Guiseppe Parise, Jim Murphy

Category: Electrical, Energy Conservation & Management, Occupational Safety

ARCHIVE: University of Michigan Advocacy in the NESC 2007 – 2017

The 2023 National Electrical Safety Code (#NESC) will be published this August. Stay tuned for new resources from #IEEE coming soon! Read about the upcoming changes here:https://t.co/VLXCNaf74S

— IEEE Educational Activities (@IEEEeducation) June 8, 2022

LEARN MORE:

P1366 – Guide for Electric Power Distribution Reliability Indices

University Design Guidelines that reference the National Electrical Safety Code

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:

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.
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.
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.
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.
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
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

Electrical installations and Protection Against Electric Shock

IEC 60364-1:2025 (6th edition, published September 5, 2025) replaces the 2005 edition (5th edition). This is a major technical revision with significant changes which we will cover throughout 2026 — after NESC and NEC work

“View of Lake Geneva” 1881 Gustave Courbet

Technical Committee 64 develops the International Electrotechnical Commission consensus product that covers similar territory for the global electrical power industry as NFPA 70 (National Electrical Code). Keep in mind that the safety traditions of the NFPA suite of consensus products are inspired by fire safety considerations. IEC 60363 Electrical installations and protection against electric shock — the parent document that applies to the wiring systems of education and healthcare facilities — was inspired from voltage safety.

TC 64 Strategic Business Plan

The scope of IEC 60364 is reproduced below:

– concerning protection against electric shock arising from equipment, from installations and from systems without limit of voltage,
– for the design, erection foreseeable correct use and verification of all kind of electrical installations at supply voltage up to 1 kV a.c or 1,5 kV d.c., except those installations covered by the following IEC committees: TC 9, TC 18, TC 44, TC 97, TC99
– in co-ordination with TC 99, concerning requirements additional to those of TC 99 for the design, erection and verification of electrical installations of buildings above 1kV up to 35kV.

The object of the standards shall be:
– to lay down requirements for installation and co-ordination of electrical equipment
– to lay down basic safety requirements for protection against electric shock for use by technical committees
– to lay down safety requirements for protection against other hazards arising from the use of electricity
– to give general guidance to IEC member countries that may have need of such requirements
– and to facilitate international exchanges that may be hampered by differences in national regulations.

The standards will not cover individual items of electrical equipment other than their selection for use. Safety Pilot Function: Protection against electric shock.

IEC Preview 60364-1

KUPDF Commentary on 60364 and comparisons with NFPA 70 National Electrical Code

Since neither the USNA National Committee to the IEC (USNA/IEC), nor the US Technical Advisory Administrator (National Electrical Manufacturers Association) has a workspace set up for responding to IEC 60364 calls for public comment, we set one up for ourselves several years ago for education facility and electrical engineering faculty and students:

IEC | USNA IEC Workspace | Updated 12 June 2023

Note that anyone in the world is welcomed to comment upon IEC documents, contingent upon obtaining (free) login credentials. To review the the strike-and-bold you will need login credentials. Alternatively, you may click in to the 4-times monthly teleconferences of the IEEE Education & Healthcare Facilities Committee. See our CALENDAR for the next online meeting.

Colleagues: Mike Anthony, Jim Harvey, Massimo Mittolo, Giuseppe Parise

International Electrotechnical Commission – Central Office – Geneva

Elettrotecnico Lingua Franca

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

Hegemon Cuyahoga & County Dublin

Financial Presentations & Webcasts

2025 Third Quarter Report

Here we shift our perspective 120 degrees to understand the point of view of the Producer interest in the American national standards system (See ANSI Essential Requirements). The title of this post draws from the location of US and European headquarters. We list proposals by a successful electrical manufacturer for discussion during today’s colloquium:

2026 National Electrical Code

CMP-1: short circuit current ratings, connections with copper cladded aluminum conductors, maintenance to be provided by OEM, field markings

CMP-2: reconditioned equipment, receptacles in accessory buildings, GFCI & AFCI protection, outlet placement generally, outlets for outdoor HVAC equipment⁽¹⁾

(1) Here we would argue that if a pad mount HVAC unit needs service with tools that need AC power once every 5-10 years then the dedicated branch circuit is not needed. Many campuses have on-site, full-time staff that can service outdoor pad mounted HVAC equipment without needing a nearby outlet. One crew — two electricians — will run about $2500 per day to do anything on campus.

CMP-3: No proposals

CMP-4: solar voltaic systems (1)

(1) Seems reasonable – spillover outdoor night time lighting effect upon solar panel charging should be identified.

CMP-5: Administrative changes only

CMP-6: No proposals

CMP-7: Distinction between “repair” and “servicing”

CMP-8: Reconditioned equipment

CMP-9: Reconditioned equipment

CMP-10: Short circuit ratings, service disconnect, disconnect for meters, transformer secondary conductor, secondary conductor taps, surge protective devices, disconnecting means generally, spliced and tap conductors, more metering safety, 1200 ampere threshold for arc reduction technology, reconditioned surge equipment shall not be permitted, switchboard short circuit ratings

CMP-11: Lorem

CMP-12: Lorem

CMP-13: Lorem

Lorem ipsum

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 Internati onal 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.