Electropedia is produced by the world’s peak standardization organization that oversees 214 technical committees that provide a neutral and independent platform where agreement can be found on electrotechnical solutions with global relevance and reach.
International Electrotechnical Commission | CDV Consultations
Open consultations:
ISO/NP 25199 – Guidelines for Processing Multiple Use Healthcare Textiles – Deadline: 1 July 2024 (Send Mike a message)
“Une leçon clinique à la Salpêtrière” 1887 André Brouillet
Many large research universities have significant medical research and healthcare delivery enterprises. The leadership of those enterprises discount the effect of standards like this at their peril. It is easy to visualize that this document will have as transformative effect upon the healthcare industry as the ISO 9000 series of management standards in the globalization of manufacturing.
Standardization in the field of healthcare organization management comprising, terminology, nomenclature, recommendations and requirements for healthcare-specific management practices and metrics (e.g. patient-centered staffing, quality, facility-level infection control, pandemic management, hand hygiene) that comprise the non-clinical operations in healthcare entities.
Excluded are horizontal organizational standards within the scope of:
Also excluded are standards relating to clinical equipment and practices, enclosing those within the scope of TC 198 Sterilization of health care products.
This committee is led by the US Technical Advisory Group Administrator —Ingenesis. The committee is very active at the moment, with new titles drafted, reviewed and published on a near-monthly basis,
DPAS ballot for ISO PAS 23617- Healthcare organization management: Pandemic response (respiratory) —Guidelines for medical support of socially vulnerable groups – Comments due 16 October
[Issue 14-99]
Contact: Lee Webster (lswebste@utmb.edu, lwebster@ingenesis.com), Mike Anthony (mike@standardsmichigan.com), Jack Janveja (jjanveja@umich.edu), Richard Robben (rrobben1952@gmail.com), James Harvey (jharvey@umich.edu), Christine Fischer (chrisfis@umich.edu), Dr Veronica Muzquiz Edwards (vedwards@ingenesis.com)
Category: Health, Global
More
ISO Focus Special Issue on Healthcare
ISO/TC 48 Laboratory equipment
ISO/TC 212 Clinical laboratory testing and in vitro diagnostic test systems
ISO/TC 198 Sterilization of health care products
Four years ago Mom made a surprise visit to the ‘Hyacinth Chen School of Nursing’. Was always her dream that young women, especially from poor families, fulfil theirs to become nurses. The students were ecstatic to actually see a lady they only knew as a painting on the wall. pic.twitter.com/LBHHCLVhKy
— Wayne Chen (@wcchen) June 1, 2022
Project Introduction for the 2028 Edition (2:39 minutes)
Changes proposals for the Edition will be received until 15 May 2024
Draft 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
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”.
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:
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
Joint Use of Electric Power Transmission & Distribution Facilities and Equipment
A Framework to Quantify the Value of Operational Resilience for Electric Power Distribution Systems
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: Safety Rules for Installation and Maintenance of Overhead Electric Supply
NESC 2023: Rules for Installation and Maintenance of Electric Supply Stations
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.
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 @IEEESAhttps://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:
The revision schedule — also revised in response to the circumstances of the pandemic — is linked below::
NESC 2023 Edition Revision Schedule*
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:
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
“Python is the programming equivalent
of a Swiss Army Knife.”
— Some guy
Open source standards development is characterized by very open exchange, collaborative participation, rapid prototyping, transparency and meritocracy. The Python programming language is a high-level, interpreted language that is widely used for general-purpose programming. Python is known for its readability, simplicity, and ease of use, making it a popular choice for beginners and experienced developers alike. Python has a large and active community of developers, which has led to the creation of a vast ecosystem of libraries, frameworks, and tools that can be used for a wide range of applications. These include web development, scientific computing, data analysis, machine learning, and more.
Another important aspect of Python is its versatility. It can be used on a wide range of platforms, including Windows, macOS, Linux, and even mobile devices. Python is also compatible with many other programming languages and can be integrated with other tools and technologies, making it a powerful tool for software development. Overall, the simplicity, readability, versatility, and large community support of Python make it a valuable programming language to learn for anyone interested in software development including building automation.
As open source software, anyone may suggest an improvement to Python(3.X) starting at the link below:
Python can be used to control building automation systems. Building automation systems are typically used to control various systems within a building, such as heating, ventilation, air conditioning, lighting, security, and more. Python can be used to control these systems by interacting with the control systems through the building’s network or other interfaces.
There are several Python libraries available that can be used for building automation, including PyVISA, which is used to communicate with instrumentation and control systems, and PyModbus, which is used to communicate with Modbus devices commonly used in building automation systems. Python can also be used to develop custom applications and scripts to automate building systems, such as scheduling temperature setpoints, turning on and off lights, and adjusting ventilation systems based on occupancy or other variables. Overall, Python’s flexibility and versatility make it well-suited for use in building automation systems.
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
The National Electrical Safety Code® sets the ground rules and guidelines for practical safeguarding of utility workers and the public.
Submit your changes and review proposals by 15 May 2024: https://t.co/kpf4JyhJSY pic.twitter.com/926L1g8Vxj
— IEEE Standards Association | IEEE SA (@IEEESA) April 21, 2024
PROCESS, PROCEDURES & 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
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.
WRITTEN BY Kalani Simpson PUBLISHED May 25, 2021
Ingredients:
Directions:
(Note: This soup freezes well.) Matzo balls were prepared according to the recipe on the back of the box of matzo meal (Manischewitz).
b
Celebrating a decade of leadership!
Today marks the 10th anniversary of Chancellor Jeffrey P. Gold’s remarkable journey with UNMC. Thank you, @jeffreypgold, for your unwavering commitment to excellence and your visionary guidance to the UNMC community. https://t.co/jgGhyMH55r pic.twitter.com/fPxvyMsnz2
— University of Nebraska Medical Center (@unmc) February 1, 2024
“Starry Night Over the Rhône” 1888 Vincent van Gogh
Today we refresh our understanding of the moment in illumination technologies for outdoor lighting systems— related but different from our exploration of building interior illumination systems in Illumination 200. Later in 2023 we will roll out Illumination 500 which explores litigation related to public illumination technology. As cities-within-cities the shared perimeter of a campus with the host municipality has proven rich in legal controversy and action.
Illumination technology was the original inspiration for the electric utility industry; providing night-time security and transforming every sector of every economy on earth. Lighting load remains the largest component of any building’s electric load — about 35 percent– making it a large target for energy regulations.
Our inquiry begins with selections from the following documents…
International Electrotechnical Commission TC 34 Lighting
IEC 60364 Electrical Installations in Buildings
2023 National Electrical Safety Code
IEEE P3001.9 – Recommended Practice for the Design of Power Systems Supplying Lighting Systems in Commercial and Industrial Facilities (under development)
2020 National Electrical Code: Article 410 (While the bulk of the NEC concerns indoor wiring fire hazards, there are passages that inform outdoor lighting wiring safety)
2019 ASHRAE 90.1: Chapter 9 Lighting
Illumination Engineering Society: Various titles
Salt Water River Project: Outdoor Lighting Standards
…and about 20 other accredited, consortia or ad hoc standards developers and publishers aligned principally with vertical incumbents. Illumination was the original inspiration (i.e. the first “killer app”) for the electrical power industry in every nation. Its best practice literature reflects a fast-moving, shape-changing domain.
Click in today with the login credentials at the upper right of our home page.
Upper Wharfedale Primary Federation School District Yorkshire Dales
McGill University: Before electricity, streets were filled with gas lights
Outdoor lighting systems can be owned and maintained by different entities depending on the context and location. Here are some examples of ownership regimes for outdoor lighting systems:
The ownership regime of an outdoor lighting system can have implications for issues such as installation, maintenance, and cost-sharing. It is important to consider ownership when designing and implementing outdoor lighting systems to ensure their long-term effectiveness and sustainability.
More
International Commission on Illumination
National Electrical Manufacturers Association
National Electrical Contractors Association
Representative Specifications
Sam Houston State University | Division 26500 Interior and Exterior Lighting
University of Delaware | Division 265100 Interior Lighting
Cal Poly University San Luis Obispo | Division 265100 Interior Lighting
Relevant Research
Enhancing the Sustainability of Outdoor Floodlighting for Cultural Heritage Buildings
Christian Wiman ✨ pic.twitter.com/r95fWwZZmP
— Dr. Maya C. Popa (@MayaCPopa) May 28, 2023
National Building Code of Canada
Dal Student Life: Our Favorite Coffee Shops
Sam Harris: Take Back Control Of Your Mind
This is what Canadians built before the country went insane pic.twitter.com/iZ5xZiMJxH
— Jeremy Wayne Tate (@JeremyTate41) February 2, 2024
Halifax Nova Scotia c. 1762
Standards Michigan, spun-off in 2016 from the original University of Michigan Business & Finance Operation, has peppered NFPA 70 technical committees writing the 2016-2026 National Electric Code with proposals to reduce the size of building premise feeder infrastructure; accommodating the improvements made in illumination and rotating machinery energy conservation since the 1980’s (variable frequency drives, LED lighting, controls, etc.)
These proposals are routinely voted down in 12-20 member committees representing manufacturers (primarily) though local inspection authorities are complicit in overbuilding electric services because they “bill by the service panel ampere rating”. In other words, when a municipality can charge a higher inspection fee for a 1200 ampere panel, what incentive is there to support changes to the NEC that takes that inspection fee down to 400 amperes?
The energy conservation that would result from the acceptance of our proposals into the NEC are related to the following: reduced step down transformer sizes, reduced wire and conduit sizes, reduced panelboard sizes, reduced electric room cooling systems — including the HVAC cooling systems and the ceiling plenum sheet metal carrying the waste heat away. Up to 20 percent energy savings is in play here and all the experts around the table know it. So much for the economic footprint of the largest non-residential building construction market in the United States — about $120 billion annually.
The market incumbents are complicit in ignoring energy conservation opportunity. To paraphrase one of Mike Anthony’s colleagues representing electrical equipment manufacturers:
“You’re right Mike, but I am getting paid to vote against you.”
NFPA Electrical Division knows it, too.
University of Michigan
Rightsizing Commercial Electrical Power Systems: Review of a New Exception in NEC Section 220.12
Michael A. Anthony – James R. Harvey
University of Michigan, Ann Arbor
University of Houston, Clear Lake, Texas
For decades, application of National Electrical Code (NEC) rules for sizing services, feeders and branch circuits has resulted in unused capacity in almost all occupancy classes. US Department of Energy data compiled in 1999 indicates average load on building transformers between 10 and 25 percent. More recent data gathered by the educational facilities industry has verified this claim. Recognizing that aggressive energy codes are driving energy consumption lower, and that larger than necessary transformers create larger than necessary flash hazard, the 2014 NEC will provide an exception in Section 220.12 that will permit designers to reduce transformer kVA ratings and all related components of the power delivery system. This is a conservative, incremental step in the direction of reduced load density that is limited to lighting systems. More study of feeder and branch circuit loading is necessary to inform discussion about circuit design methods in future revisions of the NEC.
CLICK HERE for complete paper
University of Houston
New update alert! The 2022 update to the Trademark Assignment Dataset is now available online. Find 1.29 million trademark assignments, involving 2.28 million unique trademark properties issued by the USPTO between March 1952 and January 2023: https://t.co/njrDAbSpwB pic.twitter.com/GkAXrHoQ9T
— USPTO (@uspto) July 13, 2023
Standards Michigan Group, LLC
2723 South State Street | Suite 150
Ann Arbor, MI 48104 USA
888-746-3670
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