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Alternating Current Generators

March 18, 2025
mike@standardsmichigan.com
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Today we scan the status of the literature governing the specification, installation, operation and maintenance of the larger commercial-scale generators that provide backup power for emergency egress, hospitals, data centers, critical operations and the like.  These are three phase units – larger than residential generators (in kilowatts terms) but smaller than regulated utility generators.  This topic is further breakdown of coverage in previous sessions, spanning decades.  Use the login credentials at the upper right of our home page.

  • IEC 60034 – Rotating Electrical Machines (General requirements for electric machines, including generators).
  • ISO 8528: Reciprocating Internal Combustion Engine Driven Alternating Current Generating Sets
  • NEMA MG 10012-2023: Safety Standard for Construction and Guide for Selection, Installation, and Use of Electric Motors and Generators
  • ANSI C84.1 – Voltage ratings for electric power systems and equipment.
  • UL 2200: Standard for Stationary Engine Generator Assemblies
  • UL 142 – Safety standard for fuel tanks used in generator installations.
  • IEEE 446: Recommended Practice for Emergency and Standby Power Systems for Industrial and Commercial Applications
  • ASCE 24: Flood Resistant Design and Construction
  • ASME B31.9 – Building Services Piping (applies to piping for fuel and exhaust systems in commercial buildings).
  • NFPA 37: Standard for the Installation and Use of Stationary Combustion Engines and Gas Turbines
  • NFPA 70:  National Electrical Code
  • NFPA 110 & 111: Standard for emergency and standby power systems.
  • ANSI/NETA Acceptance Testing Specifications
  • EPA Regulations (e.g., 40 CFR Part 60) | EPA Tier Regulations – Emission standards for diesel and gas-powered generators in the U.S.
  • OSHA 29 CFR 1910 – Occupational safety and health standards for electrical systems, including generators.

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Emergency and Standby Power Systems

Critical Operations Power Systems

Transfer Equipment

Emergency and Standby Power Systems

March 18, 2025
mike@standardsmichigan.com

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Sporty weather season in the United States inspires a revisit of best practice for designing, building and maintaining the systems that provide limited electricity when the primary source fails. We have been active in the development of this and related titles for decades and have presented several proposals to the technical committee. Public input for the 2028 Revision will be received until June 4, 2025.

Electrical building, World’s Columbian Exposition, Chicago (1892)

FREE ACCESS to the 2022 Edition of NFPA 110 Standard for Emergency and Standby Power Systems

The scope of NFPA 110 and NFPA 111 are close coupled  and summarized below:

NFPA 110 Standard for Emergency and Standby Power Systems. This standard contains requirements covering the performance of emergency and standby power systems providing an alternate source of electrical power to loads in buildings and facilities in the event that the primary power source fails.

NFPA 111 Stored Electrical Energy for Emergency and Standby Power Systems. This standard shall cover performance requirements for stored electrical energy systems providing an alternate source of electrical power in buildings and facilities in the event that the normal electrical power source fails.

FIRST DRAFT AGENDA | August 2022

Public comment on the First Draft of the 2025 Edition will be received until May 31, 2023.  

We have advocated in this standard since 1996 and still use the original University of Michigan Workspace; though those workspaces must be upgraded to the new Google Sites during 2021.  We provide a link to the Standards Michigan Workspace and invite you to join any of our electrical colloquia which are hosted jointly with the IEEE Education & Healthcare Facilities Committee four times per month in European and American time zones.  See our CALENDAR for the next online meeting; open to everyone.

Issue: [96-04]

Category: Electrical, Risk

Contact: Mike Anthony, Robert Arno, Neal Dowling, Jim Harvey, Robert Schuerger, Mike Hiler

More

ITM of Emergency Power Systems

Planning for Higher Education Journal: Revisiting the Campus Power Dilemma: A Case Study

Tom is a long-time colleague and friend so Mike happily posts his content:

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Copper can’t be mined fast enough to electrify the United States

March 18, 2025
mike@standardsmichigan.com

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Edison electric vehicle | National Park Service, US Department of the Interior

Bridge Michigan: Researchers say a copper shortage could imperil Michigan’s EV future

Related:

2017 NEC Section 110.5 | Aluminum wiring

Cow to Cone

March 17, 2025
mike@standardsmichigan.com
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Milk

Do cows mind being milked?

Nourriture d’automne

Krían í vanda

March 17, 2025
mike@standardsmichigan.com
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Iceland


Finian’s Rainbow

March 15, 2025
mike@standardsmichigan.com
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“Finian’s Rainbow” is a musical (written by E.Y. Harburg – University of Michigan 1918) that tells the story of an Irishman named Finian McLonergan who comes to the United States with his daughter Sharon to bury a pot of gold stolen from a leprechaun. Finian believes that if he buries the gold in the soil of Fort Knox, it will grow and multiply, allowing him to live a life of luxury.

However, the town they settle in, Rainbow Valley, is owned by a racist senator named Billboard Rawkins, who wants to evict the sharecroppers living on the land. With the help of a local activist named Woody, Sharon and the sharecroppers team up to stop Rawkins’ eviction plans.

Meanwhile, Og, the leprechaun whose gold Finian stole, comes to America to get his gold back. Og meets and falls in love with Susan, the mute daughter of the sharecropper Woody, and realizes that he wants to stay in America with her.

The story deals with themes of racism, prejudice, and the American dream, and features memorable like “Old Devil Moon,” “How Are Things in Glocca Morra?” and “If This Isn’t Love.”

Lively Arts 300

Kentucky Hot Brown

March 14, 2025
mike@standardsmichigan.com

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An American hot sandwich originally created at the Brown Hotel in Louisville, Kentucky, by Fred K. Schmidt in 1926. It is a variation of traditional Welsh rarebit and was one of two signature sandwiches created by chefs at the Brown Hotel shortly after its founding in 1923. It was created to serve as an alternative to ham and egg late-night dinners requested by its guests in the early hours of the morning after an evening of dancing; its ballroom accommodating upwards 1200 guests.

Standards Kentucky


Related:

Kentucky

“All Glory, Laud and honour”

March 13, 2025
mike@standardsmichigan.com
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“All Glory, Laud and Honour” is a hymn written by Theodulf of Orléans around 820 AD, originally in Latin as “Gloria, laus et honor.” Composed during his imprisonment in Angers, France, it was meant for Palm Sunday, celebrating Jesus’ triumphal entry into Jerusalem.

The hymn became part of liturgical traditions, sung during processions. Translated into English by John Mason Neale in 1854, it gained widespread use in Anglican and other churches. Its enduring melody, often paired with the text, is attributed to Melchior Teschner (1615). The hymn remains a staple in Christian worship, especially during Holy Week.

King’s College Chapel

Solar Panels on King’s College Chapel Roof

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