Author Archives: mike@standardsmichigan.com

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Falsus in uno, Falsus in omnibus

To what degree does the endless and, frankly shameless, on-air fundraising by an organization with widely tolerated bias constitute de facto political fundraising for the Democratic Party? In Southeastern Michigan — in less than a 50 mile region — you can hear the same NPR “content” from six different universities: Ann Arbor, Ypsilanti, Toledo, Detroit, East Lansing, and Flint.

There has been some relatively recent legislative proposals to restore NPR to its original charter of cultural content (music, book reviews, agricultural information, etc.) but these proposals never moved beyond the relevant committee.



NPR CEO Katherine Maher was a no-show at the House Oversight Subcommittee Hearing

Related:

National Public Radio Inc | 2022 Tax Filing

National Public Radio | IRS 990 Return of Organization Exempt from Income Tax

American Public Media Group | 2022 Tax Filing

“Hotseat heats up for NPR CEO Katherine Maher — and her life is the ultimate woke-elite bingo card”

National Public Radio follows guidelines and best practices when conducting fundraising campaigns, but they’re not so much strict “rules” as they are principles and standards upheld by NPR and its member stations. Here are some common practices and considerations:

  1. Transparency: NPR and its member stations are typically transparent about their funding needs and where the money goes. They often provide detailed breakdowns of their budgets and expenses.
  2. Ethical Solicitation: Fundraising efforts should be conducted ethically and in accordance with NPR’s values. This means avoiding misleading tactics and being honest about the need for funding.
  3. Listener Support: NPR often emphasizes the importance of listener support in funding their programming. They encourage individuals to contribute at various levels, often with incentives like member benefits.
  4. Corporate Sponsorship: NPR also receives funding from corporate sponsors,but they are careful to maintain editorial independence.” Sponsored content is clearly labeled, and NPR maintains strict guidelines to ensure that sponsors do not influence editorial decisions.
  5. Member Stations: NPR member stations across the country conduct their own fundraising campaigns, often in conjunction with national NPR campaigns. These stations rely heavily on listener support and may have their own guidelines and practices.
  6. Regulatory Compliance: NPR and its member stations must comply with relevant laws and regulations governing fundraising, including those related to nonprofit organizations and broadcasting.
  7. Stewardship: NPR and its member stations typically prioritize stewardship of donor funds, ensuring that donations are used effectively and efficiently to support their mission and programming.

While there may not be hard and fast rules for NPR fundraising, adherence to these principles helps maintain trust with listeners and supporters.

Swarthmore College Pennsylvania

 

To become a National Public Radio (NPR) member station or broadcaster, certain criteria must be met. NPR is a mission-driven organization that partners with independently owned and operated public radio stations across the United States to deliver its programming. Here are the typical criteria for becoming an NPR member station:

  1. Nonprofit Status: NPR member stations must be nonprofit organizations, often affiliated with universities, community organizations, or governmental bodies.
  2. Broadcast License: Stations must hold a valid broadcast license issued by the Federal Communications Commission (FCC) in the United States. This license authorizes the station to broadcast on a specific frequency within a designated geographic area.
  3. Commitment to NPR’s Mission: Member stations are expected to share NPR’s mission of providing high-quality, non-commercial programming that serves the public interest. This includes delivering news, cultural content, and educational programming to their local communities.
  4. Financial Stability: Stations must demonstrate financial stability and viability to ensure they can fulfill their commitments to NPR and their local communities over the long term.
  5. Technical Requirements: Stations must meet certain technical requirements to ensure they can receive and broadcast NPR programming effectively. This includes having appropriate transmission equipment and meeting FCC regulations for broadcast quality and coverage.
  6. Membership Dues: Member stations are required to pay annual membership dues to NPR, which help support NPR’s operations and programming.
  7. Compliance with NPR Policies: Stations must adhere to NPR’s policies and guidelines regarding programming standards, ethics, and editorial independence.
  8. Community Engagement: NPR values stations that are actively engaged with their local communities, including through outreach, events, and partnerships with local organizations.
  9. Programming Commitment: Member stations are expected to broadcast a significant portion of NPR programming, including flagship shows like “Morning Edition” and “All Things Considered,” as well as other NPR-produced content.
  10. Commitment to Diversity, Equity, and Inclusion: NPR values diversity in its member stations and encourages stations to reflect the diversity of their communities in their programming and staffing.

Overall, becoming an NPR member station involves a combination of legal, financial, technical, and cultural considerations, all aimed at supporting NPR’s mission of providing high-quality public radio programming to audiences across the United States.

A significant portion of NPR member stations are associated with universities or colleges. These stations are often operated by the educational institution’s media departments or affiliated broadcasting organizations. They serve as valuable training grounds for students studying journalism, communications, broadcasting, and related fields.

While the exact number of NPR member stations associated with universities or colleges may vary over time, it’s safe to say that a substantial portion of the network falls into this category. Many universities and colleges across the United States operate their own radio stations, and a portion of these stations choose to affiliate with NPR to access its programming and resources.

Errors of omission, lost opportunities, are generally more critical than errors of commission. Organizations fail or decline more frequently because of what they did not do than because of what they did. - Russell L. Ackoff

Related:

Radio Transmission Power & Frequency Allocation

Pew Research Center: Public Broadcasting Fact Sheet

Urban Dictionary: Affluent White Female Liberal

NPR names Katherine Maher President and CEO

Tucker Carlson: Radicalized NPR on verge of destroying itself

Congresswoman Tenney Moves to Defund NPR

Outrageous bias in the media: NPR “National Public Radio “

 National Center for Charitable Statistics

H.R. 3410 Prohibit Federal funding of National Public Radio

“A half truth is a whole lie” — Yiddish proverb


National Public Radio (NPR) member stations are permitted to transmit from facilities supported by federally funded colleges or universities, as many are licensed as noncommercial educational (NCE) stations under the Federal Communications Commission (FCC). These stations, often operated by or affiliated with public colleges and universities, meet FCC requirements for NCE licenses, which allow them to broadcast educational and cultural programming without commercial advertisements.

Key Points:NCE Licensing: NPR member stations are typically licensed as NCE stations, which can be owned or operated by nonprofit entities, including public colleges and universities. These institutions often receive federal funding, and their facilities (e.g., campus buildings or transmission equipment) can be used for broadcasting.

Funding Structure: Stations affiliated with colleges or universities may receive funding from the institution, listener contributions, corporate underwriting, and federal grants via the Corporation for Public Broadcasting (CPB). Federal funding, while a small portion (e.g., ~10% of public radio revenue), is often channeled through CPB to support station operations.

Examples: Many NPR member stations, such as WBEZ (operated by Chicago Public Media but affiliated with educational institutions) or KUT (operated by the University of Texas), transmit from university-supported facilities. Approximately half of NPR’s member stations are affiliated with colleges, sometimes operating directly from campus facilities.
FCC Regulations: The FCC allows NCE stations to broadcast from such facilities as long as they adhere to noncommercial guidelines, prohibiting promotional advertisements for for-profit entities while permitting donor acknowledgments.

Impact of Federal Funding Cuts: Recent reductions in federal funding for public media, as reported in 2025, may strain these stations, particularly those reliant on university support, as budget-strapped institutions face additional financial pressures.

There are no explicit FCC restrictions preventing NPR stations from using federally funded college or university facilities, provided they comply with NCE regulations.

Mechanical 330

Today’s Handout: Radon, et al (For future dedicated session)

During today’s colloquium we audit the literature that sets the standard of care for mechanical engineering design, construction operations and maintenance of campus district energy systems — typically miles (kilometers) of large underground pipes and wires that characterize a district energy system.  Topically, Mechanical 400 deals with energy systems “outside” or “between” buildings; whereas Mechanical 200 deals with energy systems within an individual building envelope.

2024 International Mechanical Code

Mechanical Engineering Courses

A campus district energy system is a centralized heating and cooling network that supplies thermal energy to multiple buildings within a defined area, such as a college or university campus. The system generates steam, hot water, or chilled water at a central plant, which is then distributed through an underground network of pipes to individual buildings for space heating, domestic hot water, and air conditioning. By consolidating energy production and distribution, campus district energy systems can achieve significant energy and cost savings compared to individual building systems, as well as reduce greenhouse gas emissions and improve reliability and resiliency of the energy supply.

"I've always been interested in building systems that can understand and respond to natural language. It's one of the most challenging and fascinating problems in AI" - Stephen Wolfram"The golden rule of elevator safety states 'Its either you're in or out'" - Facilities Management

School Construction News (September 24) | Arizona State University: Helping Higher Ed: Solutions to Advance Sustainability Goals in Campus Mechanical Systems

We track standards setting in the bibliographies of the following organizations:

AHRI | Air Conditioning, Heating & Refrigeration Institute

ASHRAE | American Society of Heating & Refrigeration Engineers

ASHRAE Guideline 14: Measurement of Energy and Demand Savings

ASHRAE Guideline 22: Instrumentation for Monitoring Central Chilled Water Plant Efficiency

Facility Smart Grid Information Model

ASME | American Society of Mechanical Engineers

ASPE | American Association of Plumbing Engineers

ASTM | American Society for Testing & Materials

AWWA | American Water Works Association

AHRI | Air Conditioning, Heating & Refrigeration Institute

IAPMO | International Association of Plumbing and Mechanical Officials

IEC | International Electrotechnical Commission

Institute of Electric and Electronic Engineers

Research on the Implementation Path Analysis of Typical District Energy Internet

Expansion Co-Planning of Integrated Electricity-Heat-Gas Networks in District Energy Systems

Towards a Software Infrastructure for District Energy Management

 

IMC | International Mechanical Code

IDEA | International District Energy Association

District Energy Best Practices Handbook

District Energy Assessment Tool

IPC | International Plumbing Code

ISEA | International Safety Equipment Association

NFPA | National Fire Protection Association

SMACNA | Sheet Metal Contractors National Association

UL | Underwriters Laboratories

UpTime Institute

(All relevant OSHA Standards)

It is a large domain and virtually none of the organizations listed above deal with district energy systems outside their own (market-making) circle of influence.  As best we can we try to pull together the peak priorities for the real asset managers and engineers who are responsible for these system.

* Building services engineers are responsible for the design, installation, operation and monitoring of the technical services in buildings (including mechanical, electrical and public health systems, also known as MEP or HVAC), in order to ensure the safe, comfortable and environmentally friendly operation. Building services engineers work closely with other construction professionals such as architects, structural engineers and quantity surveyors. Building services engineers influence the architectural design of building, in particular facades, in relation to energy efficiency and indoor environment, and can integrate local energy production (e.g. façade-integrated photovoltaics) or community-scale energy facilities (e.g. district heating). Building services engineers therefore play an important role in the design and operation of energy-efficient buildings (including green buildings, passive houses and zero energybuildings.  uses. With buildings accounting for about a third of all carbon emissions] and over a half of the global electricity demand, building services engineers play an important role in the move to a low-carbon society, hence mitigate global warming.


More:

Practical Essay on the Stength of Cast Iron and Other Metals  Thomas Tredgold (1882)

Dutch Institute for Fundamental Energy Research

Installation of Air-Conditioning and Ventilating Systems

Design, construction, operation and maintenance of environmental air, piping and drainage systems is one of the largest cost centers in education facilities.  We find subtle tradeoffs between fire safety, energy conservation and indoor air quality goals.   With solid data and enlightened debate which include the user-interest (the final fiduciary in the education facility industry, for example) those tradeoffs are reconciled by technical committees administered by three ANSI-accredited standards developers:

American Society of Heating and Refrigeration Engineers (ASHRAE)

American Society of Mechanical Engineers (ASME)

IAPMO Group (IAPMO)

National Fire Protection Association (NFPA)

Sheet Metal & Air Conditioning Contractors National Association

Today we focus on the leading safety practice of NFPA 90A Standard for the Installation of Air-Conditioning and Ventilating Systems.  From the NFPA 90A prospectus:

[NFPA 90A] shall cover construction, installation, operation, and maintenance of systems for air conditioning and ventilating, including filters, ducts, and related equipment, to protect life and property from fire, smoke, and gases resulting from fire or from conditions having manifestations similar to fire.

[Explanation A.1.1] An air duct system has the potential to convey smoke, hot gases, and flame from area to area and to supply air to aid combustion in the fire area. For these reasons, fire protection of an air duct system is essential to safety to life and the protection of property. However, an air duct system’s fire integrity also enables it to be used as part of a building’s fire protection system. Guidance for the design of smoke-control systems is provided in NFPA 92, Standard for Smoke Control Systems. Pertinent information on maintenance is provided in Annex B. Maintenance of fire dampers, ceiling dampers, smoke dampers, and combination fire/smoke dampers requirements can be found in NFPA 80, Standard for Fire Doors and Other Opening Protectives, and NFPA 105, Standard for Smoke Door Assemblies and Other Opening Protectives.

The original University of Michigan codes and standards advocacy enterprise spoke loud and clear about duct smoke detector application, control signaling and maintenance requirements from the user point of view.   Owing to the re-organization we missed the 2018 revision but we are now recovering from where we left off for the 2021 revision.

The First Draft Report for the 2021 edition is linked below:

First Draft Ballot / Final Results

90A_A2020_AIC_AAA_SD_PCResponses

NFPA 90A is heavily referenced in an interlocking matrix of related fire safety consensus products but it is not very lengthy document.   We include it on the standing agenda of our periodic Mechanical and Prometheus Bound teleconference.  See our CALENDAR for the next online meeting.

 

Issue: [13-118]

Category: Fire Protection, Mechanical

Colleagues: Mike Anthony, Richard Robben, Larry Spielvogel

:

 

International Mechanical Code

2024 / 2025 / 2026 Code Development: Group B (2025)

“Plaza Italia” 1971 | Giorgio de Chirico

 

After architectural trades, the mechanical technologies occupy the largest part of building construction:

  1. HVAC:
    • Heating Systems: Technologies include furnaces, boilers, heat pumps, and radiant heating systems.
    • Ventilation Systems: Incorporating technologies like air handlers, fans, and ductwork to ensure proper air circulation.
    • Air Conditioning Systems: Including central air conditioning units, split systems, and variable refrigerant flow (VRF) systems.
  2. Plumbing:
    • Water Supply Systems: Involving technologies for water distribution, pumps, and pressure regulation.
    • Sanitary Systems: Including drainage, sewage systems, and waste disposal technologies.
    • Fixtures and Faucets: Incorporating technologies for sinks, toilets, showers, and other plumbing fixtures.
  3. Fire Protection:
    • Fire Sprinkler Systems: Employing technologies like sprinkler heads, pipes, pumps, and water tanks.
    • Fire Suppression Systems: Including technologies such as gas-based or foam-based suppression systems.
  4. Energy Efficiency Technologies:
    • Energy Management Systems (EMS): Utilizing sensors, controllers, and software to optimize energy consumption in HVAC systems.
    • Energy Recovery Systems: Incorporating technologies like heat exchangers to recover and reuse energy from exhaust air.
  5. Building Automation (BAS):
    • Control Systems: Using sensors, actuators, and controllers to manage and automate various mechanical systems for optimal performance and energy efficiency.
    • Smart Building Technologies: Integrating with other building systems for centralized control and monitoring.
  6. Materials and Construction Techniques:
    • Piping Materials: Selecting appropriate materials for pipes and fittings based on the application.
    • Prefab and Modular Construction: Leveraging off-site fabrication and assembly for mechanical components.

Our examination of the movement in best practice in the mechanical disciplines usually requires an understanding of first principles that appear in the International Building Code

2024 International Mechanical Code

Current Code Development Cycles (2024-2026)

2024/2025/2026 Code Development Schedule

“On the Mechanical Equivalent of Heat” | 1850 James Prescott Joule | Proceedings of the Royal Society of London

Representative Design Guidelines:

Michigan State University

Florida State University

US Department of Energy: Sandia National Laboratories

Related:

ICC Releases 2024 International Codes

Group A Model Building Codes

We are waiting for the link to the Complete Monograph for the Group A cycle in which one of our proposals (Chapter 27 Electrical) will be heard at the April 2023 Committee Action Hearings in Orlando.


Superceded:

Because of the larger, disruptive concepts usually require more than one revision cycle — i.e. 3 to 9 years — it is wise to track those ideas in the transcripts of public hearings on the revisions.   For example, the ICC Group A Committee Action Hearings were completed (virtually) in May 2021.  The complete monograph of proposals is linked below:

2021 Group A Complete Proposed Changes

Transcript of committee response is linked below:

2021 REPORT OF THE COMMITTEE ACTION HEARINGS ON THE 2021 EDITIONS OF THE GROUP A INTERNATIONAL CODES

A sample of the topics that need attention that involve the mechanical disciplines (e.g. energy, environmental air, water) :

  • Soil gas and carbon monoxide detection and mitigation
  • Minimum number of required plumbing fixtures in schools and higher education community facilities
  • Fixtures for adult changing stations and gender neutral toilet and bathing facilities
  • Fat, oil and grease interceptors in kitchens
  • Dormitories, residence halls

There are others ideas that can be tracked in the most recent Group B Hearings included April 6th:

LIVE: I-Code Group B Public Comment Hearings

Proposals for the 2024 IMC revision will be accepted until January 7, 2024.  We maintain this title among our core titles during our periodic Mechanical teleconferences.   See our CALENDAR for the next online meeting; open to everyone.

"Microgrids represent a transformational opportunity in how energy is generated, delivered, and consumed" - Robert F. Kennedy, Jr.

2024/2025/2026 ICC CODE DEVELOPMENT SCHEDULE

Issue: [Various]

Colleagues:  Mike Anthony, Richard Robben, Larry Spielvogel


Group A includes the following codes:

  • International Building Code (IBC) – Egress, Fire Safety, General Portions
  • International Fire Code (IFC)
  • International Fuel Gas Code (IFGC)
  • International Mechanical Code (IMC)
  • International Plumbing Code (IPC)
  • International Private Sewage Disposal Code (IPSDC)
  • International Residential Code (IRC) – Mechanical, Plumbing
  • International Swimming Pool and Spa Code (ISPSC)
  • International Zoning Code (IZC)
  • International Property Maintenance Code (IPMC)
  • International Wildland-Urban Interface Code (IWUIC)

ICC Code Development Process: Important Links

 

Workspace / ICC

 

 

 

 

 

Grandma’s Chicken Soup

Nebraska

WRITTEN BY Kalani Simpson PUBLISHED May 25, 2021

 

Ingredients:

  • 1 5- to 6-pound stewing hen or baking chicken
  • 1 package of chicken wings
  • 3 large onions
  • 1 large sweet potato
  • 3 parsnips
  • 2 turnips
  • 11 to 12 large carrots
  • 5 to 6 celery stems
  • 1 bunch of parsley
  • Salt and pepper to taste

Directions:

  1. Clean the chicken, put it in a large pot and cover it with cold water. Bring the water to boil.
  2. Add the chicken wings, onions, sweet potato, parsnips, turnips and carrots. Boil about 1 and a half hours. Remove fat from the surface as it accumulates.
  3. Add the parsley and celery. Cook the mixture about 45 min. longer.
  4. Remove the chicken. The chicken is not used further for the soup. (The meat makes excellent chicken parmesan.)
  5. Put the vegetables in a food processor until they are chopped fine or pass through a strainer. Both were performed in the present study.
  6. Add salt and pepper to taste.

(Note: This soup freezes well.)  Matzo balls were prepared according to the recipe on the back of the box of matzo meal (Manischewitz).

PRINT Recipe

b

 

Technical Barriers to Trade

World According to Marco Polo

 

We track action in international administrative procedures that affect the safety and sustainability agenda of the education facility industry.  From time to time we find product purchasing contracts that contain “boilerplate” requiring conformity to applicable regulations found in the Agreement on Technical Barriers to Trade (TBT).   Common examples are found in contracts for the acquisition of information technology and specialty laboratory equipment.

The World Trade Organization TBT Agreement obliges all Parties  to maintain an inquiry point that is able to answer questions from interested parties and other WTO Members regarding technical regulations, standards developed by government bodies, and conformity assessment procedures, as well as provide relevant documents.  The TBT Agreement also requires that WTO Members notify the WTO of proposed technical regulations and conformity assessment procedures so interested parties can become acquainted with them and have an opportunity to submit written comments.

Technical Barriers to Trade Information Management System

The inquiry point and notification authority for the United States is operated by the National Institute of Standards and Technology an agency within the U.S. Department of Commerce.  We provide a link here for the convenience of faculty, specifiers and purchasing professionals.

Notify U.S. Standards Coordination Office USA WTO Enquiry Point

We include the TBT on the agenda of our Hello World! colloquium; open to everyone.  See our CALENDAR for the next online meeting.

 


More

 

Eurocodes

CLICK ON IMAGE TO LAUNCH INTERACTIVE MAP

The Eurocodes are ten European standards (EN; harmonised technical rules) specifying how structural design should be conducted within the European Union. These were developed by the European Committee for Standardization upon the request of the European Commission.  The purpose of the Eurocodes is to provide:

  • A means to prove compliance with the requirements for mechanical strength and stability and safety in case of fire established by European Union law.[2]
  • A basis for construction and engineering contract specifications.
  • A framework for creating harmonized technical specifications for building products (CE mark).

Since March 2010 the Eurocodes are mandatory for the specification of European public works and are intended to become the de facto standard for the private sector. The Eurocodes therefore replace the existing national building codes published by national standard bodies, although many countries have had a period of co-existence. Additionally, each country is expected to issue a National Annex to the Eurocodes which will need referencing for a particular country (e.g. The UK National Annex). At present, take-up of Eurocodes is slow on private sector projects and existing national codes are still widely used by engineers.

Eurocodes appear routinely on the standing agendas of several of our daily colloquia, among them the AEDificare, Elevator & Lift and Hello World! colloquia.    See our CALENDAR for the next online meeting; open to everyone.


More

REGULATION (EU) No 305/2011 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL

Building Environment Design

Design Standard Readability

Fry readability formula

How Consistent Are the Best-Known Readability Equations in Estimating the Readability of Design Standards?

Shixiang Zhou & Heejin Jeong
Industrial and Operations Engineering Department, University of Michigan, Ann Arbor, MI, USA
Transportation Research Institute Driver Interface Group
Department of Industrial and Operations Engineering, University of Michigan, Ann Arbor, MI, USA

 

Abstract.  Research problem: Readability equations are widely used to compute how well readers will be able to understand written materials. Those equations were usually developed for nontechnical materials, namely, textbooks for elementary, middle, and high schools. This study examines to what extent computerized readability predictions are consistent for highly technical material – selected Society of Automotive Engineers (SAE) and International Standards Organization (ISO) Recommended Practices and Standards relating to driver interfaces. Literature review: A review of original sources of readability equations revealed a lack of specific criteria in counting various punctuation and text elements, leading to inconsistent readability scores. Few studies on the reliability of readability equations have identified this problem, and even fewer have systematically investigated the extent of the problem and the reasons why it occurs.  Research questions:

(1) Do the most commonly used equations give identical readability scores?
(2) How do the scores for each readability equation vary with readability tools?
(3) If there are differences between readability tools, why do they occur?
(4) How does the score vary with the length of passage examined?

Method: Passages of varying lengths from 12 selected SAE and ISO Recommended Practices and Standards were examined using five readability equations (Flesch-Kincaid Grade Level, Gunning Fog Index, SMOG Index, Coleman-Liau Index, and Automated Readability Index) implemented five ways (four online readability tools and Microsoft Word 2013 for Windows). In addition, short test passages of text were used to understand how different readability tools counted text elements, such as words and sentences. Results and conclusions: The mean readability scores of the passages from those 12 SAE and ISO Recommended Practices and Standards ranged from the 10th grade reading level to about 15th. The mean grade reading levels computed across the websites were: Flesch-Kincaid 12.8, Gunning Fog 15.1 SMOG 12.6, Coleman-Liau 13.7, and Automated Readability Index 12.3. Readability score estimates became more consistent as the length of the passage examined increased, with no noteworthy improvements beyond 900 words. Among the five readability tools, scores typically differed by two grade levels, but the scores should have been the same. These differences were due to how compound and hyphenated words, slashes, numbers, abbreviations and acronyms, and URLs were counted, as well other punctuation and text elements. These differences occurred because the sources for these equations often did not specify how to score various punctuation and text elements. Of the tools examined, the authors recommend Microsoft Word 2013 for Windows if the Flesch-Kincaid Grade Level is required.

 

Wires

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

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

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

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

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

International Electrotechnical Commission

60304 Low voltage installations: Protection against electric shock

Institute of Electrical and Electronic Engineers

National Electrical Safety Code

Insulated Cable Engineers Association

International Association of Electrical Inspectors

National Fire Protection Association

National Electrical Code

Code Making Panel 6

Transcript of CMP-6 Proposals for 2026 NEC

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

Use the login credentials at the upper right of our home page.


Related:

2017 National Electrical Code § 110.5

Neher-McGrath Calculation: Cable Calculation ampacity and Thermal Analysis

ETAP: Cabling Sizing – Cable Thermal Analysis

 

System Aspects of Electrical Energy

Impedance Grounding for Electric Grid Surviability

Electric Power Availability: Cold Weather Preparedness

Architecture of power systems: Special cases

Outdoor Deicing & Snow Melting

Campus Outdoor Lighting

High Voltage Electric Service

Campus Bulk Electrical Distribution

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