#Snowstorms ❄️ are no match for our facilities team. Watch to see what it takes to keep our #Northeastern community safe and our #Boston campus clean. https://t.co/lDcjFRRhlw
— Northeastern U. (@Northeastern) January 20, 2023
#Snowstorms ❄️ are no match for our facilities team. Watch to see what it takes to keep our #Northeastern community safe and our #Boston campus clean. https://t.co/lDcjFRRhlw
— Northeastern U. (@Northeastern) January 20, 2023
Today our focus turns to outdoor electric deicing and snow melting wiring systems identified as suitable for the environment and installed in accordance with the manufacturer’s instructions. They work silently to keep snow load from caving in roofs and icicles falling from gutters onto pedestrian pathways.
While the voltage and ampere requirement of the product itself is a known characteristic, the characteristic 0f the wiring pathway — voltage, ampere, grounding, short circuit, disconnect and control — is relatively more complicated and worthy of our attention. Articles 426-427 of the National Electrical Code is the relevant part of the NEC
Free Access 2023 National Electrical Code
Insight into the ideas running through technical committee deliberations is provided by a review of Panel 17 transcripts:
2023 NEC Panel 17 Public Input Report (633 pages)
2023 NEC Panel 17 Public Comment Report (190 pages)
We hold Articles 427 in the middle of our priority ranking for the 2023 NEC. We find that the more difficult issues for this technology is the determination of which trade specifies these systems — architectural, electrical, or mechanical; covered in previous posts. Instead, most of our time will be spent getting IEEE consensus products in step with it, specifically ANSI/IEEE 515 and IEEE 844/CSA 293.
Comments on the Second Draft of the 2026 NEC will be received until April 18th.
…
We collaborate with the IEEE Education & Healthcare Facility Committee which meets online 4 times per month in European and American time zones. Since a great deal of the technical basis for the NEC originates with the IEEE we will also collaborate with IEEE Standards Coordinating Committee 18 whose members are charged by the IEEE Standards Association to coordinate NFPA and IEEE consensus products.
Issue: [19-151]
Category: Electrical, Energy
Colleagues: Mike Anthony, Jim Harvey, Kane Howard, Jose Meijer
LEARN MORE:
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:
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:
Michigan Public Service Commission | Consumer’s Energy Customer Billing Rules
IEC technical committees and subcommittees Ω SMB Tabulation
Much economic activity in the global standards system involves products — not interoperability standards. Getting everything to work together — safely, cost effectively and simpler — is our raison d’etre.
Manufacturers, testing laboratories, conformance authorities (whom we call vertical incumbents) are able to finance the cost of their advocacy — salaries, travel, lobbying, administration — into the cost of the product they sell to the end user (in our cases, estate managers in educational settlements). To present products — most of which involve direct contact with a consumer — at a point of sale it must have a product certification label. Not so with systems. System certification requirements, if any, may originate in local public safety requirements; sometimes reaching into the occupational safety domain.
Our readings of the intent of this technical committee is to discover and promulgate best practice for “systems of products” — i.e. ideally interoperability characteristics throughout the full span of the system life cycle.
To quote Thomas Sowell:
“There are no absolute solutions to human problems, there are only tradeoffs.”
Many problems have no solutions, only trade-offs in matters of degree. We explain our lament over wicked problems in our About.
IEC technical committees and subcommittees
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The United States National Committee of the International Electrotechnical Commission (USNA/IEC) seeks participants and an ANSI Technical Advisory Group (US TAG) Administrator for an IEC subcommittee (Multi-Agent System) developing standards for power system network management. From the project prospectus:
Standardization in the field of network management in interconnected electric power systems with different time horizons including design, planning, market integration, operation and control. SC 8C covers issues such as resilience, reliability, security, stability in transmission-level networks (generally with voltage 100kV or above) and also the impact of distribution level resources on the interconnected power system, e.g. conventional or aggregated Demand Side Resources (DSR) procured from markets.
SC 8C develops normative deliverables/guidelines/technical reports such as:
– Terms and definitions in area of network management,
– Guidelines for network design, planning, operation, control, and market integration
– Contingency criteria, classification, countermeasures, and controller response, as a basis of technical requirements for reliability, adequacy, security, stability and resilience analysis,
– Functional and technical requirements for network operation management systems, stability control systems, etc.
– Technical profiling of reserve products from DSRs for effective market integration.
– Technical requirements of wide-area operation, such as balancing reserve sharing, emergency power wheeling.
Individuals who are interested in becoming a participant or the TAG Administrator for SC 8C: Network Management are invited to contact Adelana Gladstein at [email protected] as soon as possible.
This opportunity, dealing with the system aspects of electrical energy supply (IEC TC 8), should at least interest electrical engineering research faculty and students involved in power security issues. Participation would not only provide students with a front-row seat in power system integration but faculty can collaborate and compete (for research money) from the platform TC 8 administers. We will refer it to the IEEE Education & Healthcare Facilities Committee which meets online 4 times monthly in European and American time zones.
Section 8 Key points:
Metering for New Buildings: New buildings larger than 25,000 square feet must be equipped with metering to measure the electrical energy usage of the entire building.
Tenant Spaces: In buildings with tenant spaces, individual tenant spaces larger than 10,000 square feet must also be separately metered.
Subsystem Metering: Buildings with electrical loads exceeding specified thresholds must have additional metering to measure energy use for various subsystems, including:
HVAC systems
Lighting systems
Plug loads
Process loads
These metering requirements are intended to help building owners and operators monitor energy consumption, identify opportunities for energy savings, and comply with building energy codes and standards.
Despite best intentions a fair question to ask: What does over metering look like? (University of Alberta Research)
The American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) is an ANSI-accredited continuous-maintenance standards developer (a major contributor to what we call a regulatory product development “stream”). Continuous maintenance means that changes to titles in its catalog can change in as little as 30-45 days. This is meaningful to jurisdictions that require conformance to the “latest” version of ASHRAE 90.1
Among the leading titles in its catalog is ASHRAE 90.1 Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings. Standard 90.1 has been a benchmark for commercial building energy codes in the United States and a key basis for codes and standards around the world for more than 35 years. Free access to ASHRAE 90.1 version is available at the link below:
READ ONLY Version of 2022 ASHRAE 90.1
If you cannot access it with the link above, try the link below and select 90.1 from the title list:
Current Popular ASHRAE Standards and Guidelines
Chapter 9: Lighting, begins on Page 148, and therein lie the tables that are the most widely used metrics (lighting power densities) by electrical and illumination engineers for specifying luminaires and getting them wired and controlled “per code”. Many jurisdictions provide access to this Chapter without charge. Respecting ASHRAE’s copyright, we will not do so here but will use them during today’s Illumination Colloquium, 16:00 UTC.
Keep in mind that recently ASHRAE expanded the scope of 90.1 to include energy usage in the spaces between buildings:
25 January 2023: Newly Released ASHRAE 90.1-2022 Includes Expanded Scope For Building Sites
At this time, there are no redlines open for public comment
Online Standards Actions & Public Review Drafts
Education industry facility managers, energy conservation workgroups, sustainability officers, electric shop foreman, electricians and front-line maintenance professionals who change lighting fixtures, maintain environmental air systems are encouraged to participate directly in the ASHRAE consensus standard development process.
We also maintain ASHRAE best practice titles as standing items on our Mechanical, Water, Energy and Illumination colloquia. See our CALENDAR for the next online meeting; open to everyone.
Issue: [Various]
Category: Mechanical, Electrical, Energy Conservation, Facility Asset Management, US Department of Energy, #SmartCampus
Colleagues: Mike Anthony, Larry Spielvogel, Richard Robben
Under Construction: ASHRAE WORKSPACE
More:
US Department of Energy Codes Program: Power and Lighting
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
2025-2026 NESC Revision Schedule
Mike Anthony is ID Number 469 | Proposal period closes 11:59 PM US Pacific Time | May 15
Meeting Notes in red
Loss of electric power and internet service happens more frequently and poses at least an equal — if not greater threat — to public safety. So why does neither the National Electrical Code or the National Electrical Safety Code integrate reliability into their core requirements? Reliability requirements appear in a network of related documents, either referenced, or incorporated by reference; sometimes automatically, sometimes not.
NESC Main Committee Membership: Page xii
Apart from the IEEE as the accredited standards developer, there are no “pure non-government user-interests” on this committee; although ANSI’s Essential Requirements for balance of interests provides highly nuanced interpretation. The Classifications on Page xiii represents due diligence on meeting balance of interest requirements.
In our case, we are one of many large universities that usually own district energy plants that both generate and purchase generate electric power (as sometimes provide var support to utilities when necessary; as during the August 2003 North American outage). For University of Michigan, for example, has about 20 service points at 4.8 – 120 kV. Its Central Power Plant is the largest cogeneration plant on the DTE system.
Contents: Page xxviii | PDF Page 29
Absence of internet service is at least as much a hazard, and more frequent, than downed wires. Is there a standards solution? Consideration of interoperability of internet service power supported on utility poles should track in the next revision.
No mention of any reliability related IEEE reliability standards in the present edition. Why is this?
Section 2: Definitions of Special Terms | PDF Page 46
In the 2023 Handbook, the term “reliability” shows up 34 times.
availability (from Bob Arno’s IEEE 3006-series and IEEE 493 Gold Book revision)
reliability (Bob Arno)
utility (PDF Page 57)
communication | PDF Page 47
list of terms defined in the 2023 National Electrical Code that are new and relevant to this revision: (Article 100 NEC)
Bonding jumper, system and supply
Survivability of communication network signaling
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.
Bridge Michigan: Researchers say a copper shortage could imperil Michigan’s EV future
Copper can’t be mined fast enough to electrify the US
Copper cannot be mined quickly enough to keep up with current U.S. policy guidelines to transition the country’s electricity and vehicle infrastructure to renewable energy, according to a University of Michigan study.
The… pic.twitter.com/wm2qNrlAZB
— Michigan News (@UMichiganNews) May 15, 2024
Related:
The requirement for a licensed electrician and a certified inspector to perform and certify any electrical work above $100 is prohibitive for homeowners and facility managers. To the best of our knowledge, no other US state imposes this requirement. There are more efficacious approaches to supporting effective public electrical safety services.
Licensing and Regulatory Affairs | Electrical Administrative Board
Next Meeting: February 13, 2025 10:00 am
Meeting Minutes: August 8, 2024 (not yet available)
Meeting Minutes: October 31, 2024 (submittals for agenda items due September 26th)
Related:
Michigan Public Service Commission
MPSC takes next steps in enabling interconnection and distributed energy resources
Of considerable importance is the criteria set by this board to determine whether a journeyman electrician is permitted to practice his or her trade in the State of Michigan.
We have been advocating for changes to the State of Michigan Electrical Administrative Act that currently requires all electrical work valued above $100 to be installed by a licensed journeyman electrician and inspected by an accredited electrical inspector. The $100 threshold was set decades ago and has never been challenged by another other advocacy enterprise representing the user interest. Almost all of the stakeholders on the present Electrical Administrative Board are stakeholders who benefit economically from the $100 threshold. Much of the reason for the apparent imbalance of interests lies in tradition; but also because no user interest has been present to advocate for an update of the formal, fee schedule.
This advocacy priority was on the Do-List of the original University of Michigan codes and standards advocacy enterprise which was focused on strengthening the voice of the user/owner/final fiduciary in the promulgation of regulations affecting Michigan educational facilities (CLICK HERE for link to the legacy Advocacy Project 14-1). Of all the trades covered in the parent legislation — Stille-Derossett-Hale Single State Construction Code Act (Act 230 of 1972) — the electrical power discipline is the only discipline in Michigan building technology regulations that sets a dollar criteria for electrical work to be performed and inspected. While we recognize the need for safe installation of the electrical power chain within a building; we propose another criteria for establishing the requirement for a licensed electrician and a licensed inspector should be determined (as it is in all other construction disciplines administered by the Bureau of Construction Codes, a division of the Department of Licensing and Regulatory Affairs).
The actual text of the present regulation is available by clicking here: 338.881 Definitions | Electrical Administrative Act 217 of 1956
As a consequence of former Governor Snyder’s Office of Regulatory Reinvention significant changes to both the Bureau of Construction Codes, a division of the Department of Licensing and Regulatory Affairs) have taken place within the past twelve months; which make us optimistic about political support for our proposals. We will be collaborating with our colleagues at Michigan State University to make necessary legislative changes we believe will lower the #TotalCostofOwnership of education facilities in the State of Michigan.
We will refer the Michigan Electric Code, and other state electrical codes to the IEEE Education and Healthcare Facilities Committee which hosts bi-weekly breakout teleconferences with electrical professionals in the education facilities industry as required by the demand for them.
Electrical Administrative Board Responsibilities and Meeting Schedule
The next meeting of the Michigan Electrical Board is November 2nd. We have been attending the meetings in Lansing and have made our proposal to revisit the dollar criteria known to the entire board. We hope the Electrical Administrative Board will develop another criteria; inspired by the electrical administrative boards of other states.
Issue: [14-1]
Contact: Mike Anthony, Jack Janveja, Richard Robben, Kane Howard
Category: Electrical, State & Local Legislation
Link to Issue 14-1 Legacy Website
LEARN MORE:
Wide Variations in State Adoptions of the NEC® Reveal Neglect of Electrical Safety
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
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