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The Struggle for Control of Mother’s Day
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Mother’s Day is celebrated on different days in different countries and regions. However, here is a list of some countries and the dates:
United States: Second Sunday in May
United Kingdom: Fourth Sunday in Lent
Australia: Second Sunday in May
Canada: Second Sunday in May
New Zealand: Second Sunday in May
India: Second Sunday in May
Mexico: May 10th
Japan: Second Sunday in May
France: Last Sunday in May or First Sunday in June
Germany: Second Sunday in May
Italy: Second Sunday in May
Brazil: Second Sunday in May
Egypt, Mother’s Day is celebrated on March 21st.
Israel, Mother’s Day is celebrated on the 30th day of the Jewish month of Shvat, which usually falls in February.
India, Mother’s Day is not an official holiday, but it is celebrated on the second Sunday of May, the same as in the United States.
Japan, Mother’s Day is celebrated on the second Sunday of May, but it is not a public holiday.
South Africa, Mother’s Day is celebrated on the second Sunday of May, the same as in the United States.
Thailand, Mother’s Day is celebrated on August 12th, which is the birthday of Queen Sirikit, the current queen consort of Thailand.
Electrical heat tracing: international harmonization-now and in the future
Electrical heat tracing: international harmonization-now and in the future
C. Sandberg
Tyco Thermal Controls
N.R. Rafferty – M. Kleinehanding – J.J. Hernandez
E.I. DuPont de Nemours & Company, Inc
Abstract: In the past, electrical heat tracing has been thought of as a minor addition to plant utilities. Today, it is recognized as a critical subsystem to be monitored and controlled. A marriage between process, mechanical, and electrical engineers must take place to ensure that optimum economic results are produced. The Internet, expert systems, and falling costs of instrumentation will all contribute to more reliable control systems and improved monitoring systems. There is a harmonization between Europe and North America that should facilitate design and installation using common components. The future holds many opportunities to optimize the design.
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Outdoor Deicing & Snow Melting
“Snow at Argenteuil” | Claude Monet (1875)
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.
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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
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CFRU 93.3FM
Student radio stations are learning platforms for aspiring broadcasters and media professionals. They offer practical training and hands-on experience in radio production, programming, and broadcasting. Many educational institutions with student radio stations integrate these stations into their curriculum, providing students with the opportunity to apply theoretical knowledge in a real-world broadcasting setting.
Standards Ontario | Financial Position 2023 (-$35,047,000) Page 19
Canadian Parliament Debate on Standards Incorporated by Reference
Maxwell equations: A complete description of electromagnetism and light
University of Alberta: The evolution of elite hockey culture in Canada
Stirling’s Coffee House
https://www.stirlingvenues.com/visiting-us/eating-drinking
Data Center Product Standards
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Microgrids
We were doing microgrids before microgrids were cool. We did not call our school boiler plants or campus district energy systems “microgrids” until the EPACT flooded the electrical power industry with a new cadre of policy makers, regulators and litigators and we were forced into a vocabulary upgrade.
National Electrical Code Article 705 Interconnected Power Sources: Second Draft Transcript
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We resume our engagement (and advocacy) for a few concepts which have tracked in the NFPA and IEEE standards development catalogs since the early 1990’s:
- Nudge development of the National Electrical Code to recognize that loss of electrical power presents (i.e. reliability, availability) a greater hazard, and more frequent hazard, than wiring fire hazard.
- The application of stand-alone AC to DC inverters in the 100 – 1000 watt range to convert DC power from an automobile to households. A portable vehicle to home 120 VAC outlet strip is effectively a “microgrid” and costs less than $100 not including the extension cords.
- Expansion of the hybrid vehicle fittings with a built-in inverter to provide power to households in the 1000-2000 watt range. In contemporary parlance this arrangement is now referred to as “vehicle to home” (different than vehicle to grid)
- Relaxation of NEC prohibitions against the sharing of residential backup generators and electric storage equipment between two or more separate houses. This can reduce cost significantly. Earthing, ground fault, disconnect, overcurrent protection can easily be solved if the vertical incumbents we describe in our ABOUT stop voting against us in the National Electrical Code
- Stepping up the backup power systems that maintain the needed power for neighborhood internet access. Not all students and faculty live on campus.
- Policy makers and regulators should think in terms of setting standards for 10-day, 30-day and 90-day survivability contingencies to limit civil unrest.
- Preservation of contingencies with a judicious combination of absorption and electric chillers no matter what the electric rate. During a major regional contingency power is priceless.
- Promote a “cultural change” among specifiers and university design guideline writers to permit use of aluminum wiring which cost 1/3 less than copper wiring. Use of aluminum wiring for backup “swing feeders” at medium voltage reduces the cost of an additional contingency by 2/3rds.
- Reduce National Electrical Code circuit sizing rules so that distribution transformers within buildings can be reduced, thereby reducing material, heat waste and the reduction of wet-stacking in backup generators which reduces reliability.
This should be enough for an hour. We continue the conversation 4 times monthly with the IEEE Education & Healthcare Facilities Committee. Feel free to join us today with the login credentials at the upper right of our home page.
University of Delaware Vehicle to Grid Research
P2030.12/D1.4, Jun 2022 – IEEE Draft Guide for the Design of Microgrid Protection Systems
A Review on Microgrids’ Challenges & Perspectives
Long-term experience of DC-microgrid operation
Hierarchical Network Management of Industrial DC-Microgrids
— Electrical Knowledge (@electric_4u) July 11, 2024
Mark your calendar for the Microgrid Knowledge Conference session, “Benefits of an Off-grid Microgrid-enabled Community”. This panel will describe the residential site, microgrid, fit to the city’s sustainability goals, and benefits & challenges of going off-grid. Register now! pic.twitter.com/hsAKrERIkj
— MicrogridNews (@MicrogridNews) January 15, 2025
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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