International Building Code: Chapter 27 Electrical

Loading
loading...

International Building Code: Chapter 27 Electrical

November 12, 2024
[email protected]
No Comments

§ 2701.1 Scope.  The provisions of this chapter and NFPA 70 shall govern the design, construction, erection and installation of electrical components, appliances, equipment and systems used in buildings and structures covered by this code.  The International Fire Code, the International Property Maintenance Code and NFPA 70 shall shover the use and maintenance of electrical components, appliances, equipment and systems.  The International Existing Building Code and NFPA 70 shall govern the alteration, repair, relocation, replacement and addition of electrical components, appliances, or equipment and systems.

CHAPTER 27 ELECTRICAL

Workspace / ICC

Healthcare Facilities Code

November 12, 2024
[email protected]
, , ,
No Comments

“The Doctor”  1891 Sir Luke Fildes

The NFPA 99 Healthcare Facilities Code committee develops a distinct consensus document (i.e. “regulatory product”) that is distinct from National Electrical Code Article 517; though there are overlaps and gaps that are the natural consequence of changing technology and regulations.  It is worthwhile reviewing the scope of each committee:

NFPA 99 Scope: This Committee shall have primary responsibility for documents that contain criteria for safeguarding patients and health care personnel in the delivery of health care services within health care facilities: a) from fire, explosion, electrical, and related hazards resulting either from the use of anesthetic agents, medical gas equipment, electrical apparatus, and high frequency electricity, or from internal or external incidents that disrupt normal patient care; b) from fire and explosion hazards; c) in connection with the use of hyperbaric and hypobaric facilities for medical purposes; d) through performance, maintenance and testing criteria for electrical systems, both normal and essential; and e) through performance, maintenance and testing, and installation criteria: (1) for vacuum systems for medical or surgical purposes, and (2) for medical gas systems; and f) through performance, maintenance and testing of plumbing, heating, cooling , and ventilating in health care facilities.

NFPA 70 Article 517 Scope:  The provisions of this article shall apply to electrical construction and installation criteria in healthcare facilities that provide services to human beings.  The requirements in Parts II and III not only apply to single-function buildings but are also intended to be individually applied to their respective forms of occupancy within a multi-function building (e.g. a doctor’s examining room located within a limited care facility would be required to meet the provisions of 517.10)   Informational Note: For information concerning performance, maintenance, and testing criteria, refer to the appropriate health care facilities documents.

In short, NFPA 70 Article 517 is intended to focus only on electrical safety issues though electrotechnology complexity and integration in healthcare settings (security, telecommunications, wireless medical devices, fire safety, environmental air control, etc.) usually results in conceptual overlap with other regulatory products such as NFPA 101 (Life Safety Code) and the International Building Code.

Several issues were recently debated by the Article 517 technical committee during the 2023 National Electrical Code Second Draft meetings

  • The conditions under which reconditioned electrical equipment be installed in healthcare settings; contingent on listing and re-certification specifics.
  • Relaxation of the design rules for feeder and branch circuit sizing through the application of demand factors.
  • Application of ground fault circuit interrupters.
  • “Rightsizing” feeder and branch circuit power chains (Demand factors in Section 517.22)
  • Patient care space categories
  • Independence of power sources (517.30)

There are, of course, many others, not the least of which involves emergency management.  For over 20 years our concern has been for the interdependency of water and electrical power supply to university hospitals given that many of them are part of district energy systems.

We need to “touch” this code at least once a month because of its interdependence on other consensus products by other standards developing organizations.  To do this we refer NFPA 99 standards action to the IEEE Education & Healthcare Facilities Committee which meets online four times monthly in European and American time zones.

The transcript of NEC Article 517 Public Input for the 2023 revision of NFPA 70 is linked below.  (You may have to register your interest by setting up a free-access account):

Code-Making Panel 15 (NEC-P15) Public Input Report

Code-Making Panel 15 (NEC-P15) Public Comment Report

Technical committees will meet in June to endorse the 2023 National Electrical Code.

Public consultation on the Second Draft closes May 31st. Landing page for selected sections of the 2024 revision  of NFPA 99 are linked below:

Electrical Systems (HEA-ELS)

Fundamentals (HEA-FUN)

Health Care Emergency Management and Security (HEA-HES)

Second Draft Comments are linked below:

Electrical Systems (HEA-ELS)

Fundamentals (HEA-FUN)

Health Care Emergency Management and Security (HEA-HES)

NITMAM closing date: March 28, 2023

We break down NFPA 70 and NFPA 99 together and keep them on the standing agenda of both our Power and Health colloquia; open to everyone.  See our CALENDAR for the next online meeting.

"The trained nurse has become one of the great blessings of humanity, taking a place beside the physician and the priest" - William Osler"While we try to teach our children all about life, our children teach us what life is all about" - Angela Schwindt "The true art of pediatrics lies not only in curing diseases but also in preventing them" - Abraham JacobiGermany

Issues: [12-18, [15-97] and [16-101]

Contact: Mike Anthony, Jim Harvey, Robert Arno, Josh Elvove, Joe DeRosier, Larry Spielvogel

NFPA Staff Liaison: Jonathan Hart

Archive / NFPA 99

 

 

 

Red, White and Blue Smoothie

November 11, 2024
[email protected]
, , ,
No Comments

University System of Maryland | $12.225B

Strawberries

Blueberries

University of Maryland Extension

Standards Maryland

The choice of red, white, and blue in national flags often carries historical, cultural, and political significance. Here are some reasons why various nations have chosen these colors:

  1. Historical Connections:
    • United States: The colors were chosen for their flag in 1777 and have been interpreted to symbolize valor (red), purity (white), and justice (blue). The colors were influenced by the British Union Jack.
    • France: The Tricolour flag adopted during the French Revolution represents liberty (blue), equality (white), and fraternity (red).
    • United Kingdom: The Union Jack combines elements from the flags of England (red and white), Scotland (blue and white), and Ireland (red and white).
  2. Cultural and Political Significance:
    • Russia: The flag’s colors were adopted from the Dutch flag, symbolizing pan-Slavism (red for bravery, blue for faithfulness, and white for honesty).
    • Netherlands: The Dutch flag’s colors (originally derived from the Prince’s Flag) have historical roots, symbolizing the struggle for independence and liberty.
    • Czech Republic and Slovakia: Both countries use red, white, and blue to represent their Slavic heritage.
  3. Influence and Inspiration:
    • Chile, Costa Rica, and Panama: These countries were influenced by the colors and symbolism of other flags (e.g., the French and American flags) during their independence movements.
    • Australia and New Zealand: Both countries incorporate the Union Jack in their flags, reflecting their colonial history with the United Kingdom.
  4. Symbolism:
    • Croatia, Serbia, and Slovenia: The colors are traditional pan-Slavic colors, representing freedom and national unity.
    • Iceland and Norway: The colors reflect their historical and cultural ties to other Scandinavian countries.

The exact reasons can vary, but often the colors reflect a mix of historical alliances, cultural heritage, and political ideals.

 

MIL-STD

November 11, 2024
[email protected]
No Comments

Today at the usual hour we take will take a broad view of the technical standards catalog of all military branches as they apply to the educational settings of each of the US military branches. Use the login credentials at the upper right of our home page.

“Overgrown military establishments are under any form of government inauspicious to liberty, and are to be regarded as particularly hostile to republican liberty.” Farewell Address, September 19, 1796.

United States defense standards are used to help achieve standardization objectives by the U.S. Department of Defense. Standardization is beneficial in achieving interoperability, ensuring products meet certain requirements, commonality, reliability, total cost of ownership, compatibility with logistics systems, and similar defense-related objectives. Defense standards are also used by other non-defense government organizations, technical organizations, and industry.

Military technical standards and public sector technical standards differ primarily in their purposes, scope, and requirements. Military standards — such as MIL-STD and MIL-SPEC — are designed to ensure high reliability, durability, and performance under extreme conditions, as they often pertain to defense systems, weaponry, and other critical applications. These standards prioritize security, robustness, and interoperability in challenging environments, and typically involve stringent testing and certification processes.

In contrast, public sector technical standards, like those developed by the International Organization for Standardization  or the Institute of Electrical and Electronics Engineers, are geared towards broader civilian applications. They focus on safety, quality, efficiency, and compatibility for a wide range of industries, including manufacturing, technology, and services. These standards aim to facilitate trade, ensure consumer safety, and promote innovation and best practices. While public sector standards also emphasize reliability and performance, they are generally less rigid than military standards, reflecting a broader range of use cases and operational conditions.

United States Defense Logistics Agency

 

Allied Trade Specialist

November 11, 2024
[email protected]
, , , , , ,
No Comments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The MIL-SPEC catalog and its evolution have had a significant impact on various industries beyond the military sector. Many civilian industries have adopted military standards as a benchmark for quality, reliability, and compatibility in their products and processes.

World War II Era:

The MIL-SPEC system traces its roots back to the World War II era when the U.S. military faced challenges in coordinating manufacturing efforts across multiple suppliers.  To address these challenges, the military began developing specifications and standards that detailed the requirements for various equipment and materials, including dimensions, materials, performance criteria, and testing procedures.

Post-World War II:

After World War II, the MIL-SPEC catalog expanded significantly to cover a wide range of military equipment, ranging from electronics and aircraft components to clothing and food supplies.  The standards were continuously updated and revised based on technological advancements, lessons learned, and evolving military needs.

Evolution into MIL-STD:

In the 1950s and 1960s, the MIL-SPEC system evolved into the Military Standard (MIL-STD) system to provide even more comprehensive and detailed specifications.  MIL-STD documents incorporated a broader scope of requirements, including design criteria, quality control processes, and test methodologies.  The MIL-STD system aimed to ensure consistent design and manufacturing practices across contractors and suppliers.

MIL-STD Transition to Commercial Standards:

Over time, the reliance on MIL-STDs started to decline, and there was a shift towards adopting commercial standards whenever possible.  This transition allowed the military to benefit from the advancements and cost efficiencies of commercial technologies.  However, certain critical military-specific standards, such as those related to security and specialized equipment, continued to be maintained within the MIL-STD framework.

DoD’s Transition to Performance-Based Specifications:

In recent years, the DoD has been moving away from prescriptive specifications (MIL-STDs) towards performance-based specifications. Performance-based specifications focus on defining the desired outcomes and performance requirements while allowing contractors greater flexibility in meeting those requirements. This approach encourages innovation, cost-effectiveness, and broader industry participation in military contracts.

Welding Standards

Retrodiction

November 11, 2024
[email protected]
, ,
No Comments

“In a world of infinite information,

the scarce resource is attention.”

Eric Weinstein

 

By design, we do not provide a SEARCH function. We are a niche practice in a subtle, time-sensitive domain with over 30 years of case history in which we have been first movers. We provide links to the most accessed topics in recent days. All queries presented during our “Open Office Hours” every work day, or via email, are gratefully received and prompt a near-immediate response.

 

The American National Standards Institute invites all of its members to recommend qualified candidates for the 2025 ANSI Board of Directors, the National Policy Advisory Group (NPAG), the International Policy Advisory Group (IPAG), the Intellectual Property Rights Policy Advisory Group (IPRPAG), and the Committee on Education (CoE).

Traditional Latin Mass

Preparing Your Garden for Winter

Create a Winter Bird Haven

Code ignis MMXXVII

International Fire Code

Gallery: School Bond Referenda (August & November Ballots)

Refrigeration Systems: Cadaver Preservation

Mortuary Arts

Standard for Interactions Between Medical Examiner, Coroner and Death Investigation Agencies

The Halloween Problem

Waterfowl Research

Monster Culture

Gross Anatomy Lab Renovation

Falsus in uno, Falsus in omnibus

Construction Technology Careers: Carpentry, HVAC, Plumbing

Data Centers

Data Center Wiring

Refrigeration Systems: Cadaver Preservation

Energy Standard for Data Centers

August 14, 2003

Social networks and culture in birds

Color Metrology

Interior Finishes

Color Calculation Standard E3415

GET TO KNOW YOUR CREWS: PAINT SHOP

What Is A Standard Drink?

Uniform Swimming Pool, Spa & Hot Tub Code

Paint Hazard Management

Electrical Commissioning Specifications

Construction Technology Careers: Carpentry, HVAC, Plumbing

Sport Lighting

City Chickens 101

LIVE: 91.3 FM Cal Poly Student Radio

Data Center Wiring

High-voltage switchgear and controlgear

Lingua Franca

Water and Sanitation

Bleachers, Folding Seating & Grandstands

Classroom Furniture

First Day of School

Uniform Swimming Pool, Spa & Hot Tub Code

“The Boys in the Boat”

Group A Model Building Codes

Acceptable Performance Standard for District Cooling Systems

Farm Electrical Power

Keeping Animals Cool

Farm Electrical Power

Evensong “Knoxville: Summer of 1915”

Peach Mountain Radio Observatory

Uniform Plumbing Code

Uniform Swimming Pool, Spa & Hot Tub Code

International Zoning Code

Energy Standard for *Sites* and Buildings

Protecting Animals When Disaster Strikes

H.R. 10019: Amend PURPA to prohibit smart grid project cost recovery

Entertainment Occupancies

Steeplechase Water Jump

C++

The Best Student-Friendly Brownies

print(“Python”)

Michigan State University

Oxford College Student Center

Sacred Spaces

Laboratory Fume Hood Safety

University of Iowa | Johnson County

2028 National Electrical Safety Code

Национа́льный иссле́довательский То́мский госуда́рственный университе́т

Robie House

Making Greenwich the centre of the world

Roger Scruton Memorial Lectures

Electrical heat tracing: international harmonization-now and in the future


Winter Vegetable Soup

Electrical heat tracing: international harmonization-now and in the future

Brankscom Hall Toronto

Fire Alarm & Signaling Code

Ice Swimming

Uniform Plumbing Code


Banished Words 2024

Ædificare


“It is a truth universally acknowledged, that a single man in possession

of a good fortune, must be in want of a wife.”

Pride and Prejudice by Jane Austen

 

 

Flags

November 11, 2024
[email protected]
, , , , , , ,
No Comments

A flag stands for a set of principles; the reach for the ideals of a civilization–
not for the lapses of adherence to them.

“After School” 1959 Norman Rockwell

Flag Day in the United States, observed on June 14th, commemorates the adoption of the American flag by the Second Continental Congress in 1777. It’s a day to honor the symbol of the nation’s unity, freedom, and democracy. The flag represents the ideals and principles upon which the country was founded, including liberty, justice, and equality.

On Flag Day, Americans typically display the flag at their homes and businesses, participate in patriotic ceremonies, and reflect on the significance of the flag in American history and culture. It’s also a time to remember the sacrifices made by those who have served and continue to serve in defense of the nation. Flag Day serves as a reminder of the values that bind Americans together as one nation, under the banner of the stars and stripes.

United States Independence Day

There are no rigorous standard heights for flagpoles displaying the American flag in educational settlements but there are general guidelines and recommendations.

Commercial Use: In commercial settings, flagpoles can vary widely depending on the size of the building and the surrounding landscape. They can range from 20 feet for smaller businesses to over 100 feet for large corporate buildings.

Government Buildings: Flagpoles at government buildings or public spaces often range from 30 to 60 feet or more, depending on the size and prominence of the building.

Proportions: A general guideline for the American flag is that the length of the flag should be about one-quarter to one-third the height of the flagpole.

Regulations: Some local ordinances or homeowner associations may have specific guidelines regarding flagpole height, so it’s a good idea to check local regulations before installing one.

Ultimately, the height of a flagpole for the American flag depends on the context and purpose of display, as well as practical considerations such as the size of the flag itself and local regulations.

Flagpoles

University of Michigan

Hillsdale College Michigan

Western University Ontario

Universitetet i Oslo

Northeastern University Massachusetts

University at Buffalo New York

Università Ca’ Foscari Venezia

Pepperdine University / California

Colby College Maine

Finley Public School New South Wales Australia

St. Olaf College Minnesota

College of the Ozarks Missouri

University of Alaska Fairbanks

 

Neuqua Valley High School Illinois

Hillsdale College Michigan

Abilene Christian University Texas

University of Southern Mississippi | Image: Courtland Wells

Québec

Queensborough Community College

Bucknell University Pennsylvania

Flagpoles

 

NB: “The flag stands for a set of principles, not the lack of adherence to them.” ― Craig D. Lounsbrough.  We are not sure about this source; nor the author.  We have adapted the sentiment for our home page excerpt.

Flagpoles

Layout mode
Predefined Skins
Custom Colors
Choose your skin color
Patterns Background
Images Background
Skip to content