Abstract. Stray voltage is caused by voltage drop and ground faults and may have its origin on the primary electrical distribution system or on the customer’s secondary electrical system. The rms value of the neutral-to-earth voltage along a primary distribution line may be at a value of zero some distance from the substation depending on the condition of the conductor resistances, grounding resistances, and the amount of load. Neutral-to-earth resistance is not the cause of stray voltage; however, the value of this resistance to earth at a particular location will affect the level of stray voltage. A four-wire single-phase feeder system supplying farm buildings from a single metering point is effective in preventing on-farm secondary neutral voltage drop, provided the four-wire system is extended to all farm loads, and provided no high-magnitude ground faults are present. Isolation of the primary and secondary neutral systems at the distribution transformer is effective in preventing off-farm sources from entering the customer’s system. This separation may be accomplished using a number of commercially available devices.
Abstract:Â 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.
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
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.
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Issue: [19-151]
Category: Electrical, Energy
Colleagues: Mike Anthony, Jim Harvey, Kane Howard, Jose Meijer
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.
In the November 2022 elections, a significant number of school bond referenda were presented to voters across the United States. For example, in Wisconsin alone, there were 57 successful capital referenda amounting to nearly $2.1 billion in authorized debt​ (Wisconsin Policy Forum)
In Texas, Central Texas schools had a total of $4.24 billion in bonds on the ballot, covering various propositions for school facilities, technology improvements, and athletic facilities​ (Fox 7 Austin)
In California and Arkansas, bond measures totaling $74 million — including school choice — were aimed at addressing school facility improvements​ (The74Million)
Voters in 16 North Carolina counties approved bond issues totaling $4.27 billion, with $3.08 billion dedicated to K-12 public school construction and improvements​ (EducationNC)
“The cure for high prices, is high prices” — They say.
Today we explore fiscal runaway in the US education “industry” with particular interest in the financing instruments for building the real assets that are the beating heart of culture in neighborhoods, cities, counties and states. We steer clear of social and political issues.  The marketing of these projects — and how the loans are paid off — provides insight into the costs and benefits of this $100+ billion industry; the largest non-residential building construction market in the United States.
We cannot do much to stop the hyperbolically rising cost of administrative functionaries but we can force the incumbents we describe in our ABOUT to work a little harder to reduce un-used (or un-useable) space and reduce maintenance cost. Sometimes simple questions result in obvious answers that result in significant savings.
More recently hybrid teaching and learning space, owing the the circumstances of the pandemic, opens new possibilities for placing downward pressure on cost.
After Architect-Engineers and Building Construction Contractors (many of whom finance election advocacy enterprises) the following organizations are involved in placing a bond on the open market:
School Districts: Individual school districts issue bonds to fund construction or renovation of school facilities, purchase equipment, or cover other educational expenses. Each school district is responsible for managing its own bond issuances.
Colleges and Universities: Higher education institutions, such as universities and colleges, issue bonds to finance campus expansions, construction of new academic buildings, dormitories, research facilities, and other capital projects.
State-Level Agencies: Many states have agencies responsible for overseeing and coordinating bond issuances for schools and universities. These agencies may facilitate bond sales, help ensure compliance with state regulations, and provide financial assistance to educational institutions.
Municipal Finance Authorities: Municipal finance authorities at the state or local level often play a role in facilitating bond transactions for educational entities. They may act as intermediaries in the bond issuance process.
Investment Banks and Underwriters: Investment banks and underwriters assist educational institutions in structuring and selling their bonds to investors. They help determine bond terms, market the bonds, and manage the offering.
Bond Counsel: Bond counsel, typically law firms, provide legal advice to educational institutions on bond issuances. They help ensure that the bond issuance complies with all legal requirements and regulations.
Rating Agencies: Rating agencies, such as Moody’s, Standard & Poor’s, and Fitch Ratings, assess the creditworthiness of the bonds and assign credit ratings. These ratings influence the interest rates at which the bonds can be issued.
Investors: Various institutional and individual investors, including mutual funds, pension funds, and individual bond buyers, purchase school and university bonds as part of their investment portfolios.
Financial Advisors: Financial advisory firms provide guidance to educational institutions on bond issuances, helping them make informed financial decisions related to borrowing and debt management.
Regulatory Authorities: Federal and state regulatory authorities, such as the U.S. Securities and Exchange Commission (SEC) and state-specific agencies, oversee and regulate the issuance of bonds to ensure compliance with securities laws and financial regulations.
These organizations collectively contribute to the process of issuing, selling, and managing school and university bonds in the United States, allowing educational institutions to raise the necessary funds for their capital projects and operations. The specific entities involved may vary depending on the size and location of the educational institution and the nature of the bond issuance.
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/njrDAbSpwBpic.twitter.com/GkAXrHoQ9T
