• Carbon Monoxide Detection Requirements Life Safety Systems

    Oct 15, 2024 | Thomas P. Hammerberg

    How well do you know the carbon monoxide (CO) requirements of the 2022 NFPA 72 and the 2021 International Building Code (IBC)? Take this quiz to test your knowledge.

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  • Grounding Definitions: Keep your definitions straight and stay safe National Electrical Code

    Oct 15, 2024 | Michael Johnston

    Basic grounding and bonding concepts and related performance provisions are contained in the National Electrical Code, as they are essential for safe electrical systems. While the concepts are fairly straightforward, many people find them complex and challenging. Having definitions for concepts such as ground, grounding and bonding, and knowing how and why these circuit elements work will clarify these misunderstandings and help Code users master electrical grounding and bonding.

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  • More Confusing Stuff About Fiber Optics Cabling

    Sep 13, 2024 | Jim Hayes

    In this month’s fiber optics column (see page 112) and July’s quiz, I discussed some of the most confusing topics in fiber optics, but there are more. Here’s additional questions about bending specs for cables and bend-insensitive fibers, which is a topic that confuses people in fiber optics.

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  • Safety and Health Planning Safety

    Sep 13, 2024 | Wesley L. Wheeler

    The ASSP A10 Committee for Construction and Demolition Operations standards and others are developed through consensus and approved by the American National Standards Institute, which governs the process. Let’s familiarize ourselves with some highlights of ANSI/ASSP A10.1, Pre-Project and Pre-Task Safety and Health Planning, a consensus standard designed to move construction and demolition safety and health forward, provide additional support to OSHA regulatory requirements and supplement guidance from other governmental bodies.

    For more information on the series of ASSP A10 standards from the Committee on American National Standard Construction and Demolition Operations, please visit www.assp.org/standards/standards-topics/construction-and-demolition-operations-a10.

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  • Hot Stuff Safety

    Aug 14, 2024 | Wesley L. Wheeler

    The Occupational Safety and Health Administration has released its proposed rule for heat injury and illness prevention, which includes specific requirements that employers must have in place to be in compliance. For more information on this regulation, please visit www.osha.gov/heat-exposure/rulemaking

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  • Transformer Requirements National Electrical Code

    Aug 14, 2024 | Michael Johnston

    Article 100 of the National Electrical Code defines a transformer as equipment, either single-phase or polyphase, that uses electromagnetic induction to convert current and voltage in a primary circuit into current and voltage in a secondary circuit. Transformers are general-use equipment and are required to follow the general provisions in the NEC, and specifically the rules in Article 450. Transformers are typically provided with a nameplate that meets the requirements in 450.11(A). These data nameplates usually include current values, but this is not a required marking.

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  • Fire Alarm System Documentation Life Safety Systems

    Aug 14, 2024 | Thomas P. Hammerberg

    How well do you know the documentation requirements of 2022 NFPA 72? Take this quiz and test your knowledge. 

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  • Confounded Fiber Optics Cabling

    Jul 15, 2024 | Jim Hayes

    Every technical field has its confusing jargon or enigmatic technology, and fiber optics is no exception. Let’s test your knowledge of the most commonly misunderstood principles.

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  • Wiring for Healthcare National Electrical Code

    Jun 15, 2024 | Michael Johnston

    In the National Electrical Code, electrical wiring rules for healthcare facilities are often more restrictive than general wiring requirements in chapters 1–4. Many of these restrictive requirements center around redundancy of systems and continuity of power. For example, the branch circuits serving patient care spaces require two separate equipment grounding conductors in compliance with Section 517.13. The idea is to install a minimum of two, and thus always be assured of having one.

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  • Heat Detector Requirements Life Safety Systems

    Jun 15, 2024 | Thomas P. Hammerberg

    Although heat detectors are not used in the majority of fire alarm systems, it is a good idea to understand the applications and requirements. Test your knowledge to see how well you know them.

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  • Call Before You Dig—But Don’t Stop There! Cabling

    May 14, 2024 | Jim Hayes

    Every contractor knows to call 811 before starting work on an underground cable plant installation, but that’s not all. The Excavation Safety Alliance’s “Pre-Excavation Checklist” is included in its Excavation Safety Guide and Directory, which I used as a reference for this month’s quiz.

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  • One Month, All Kinds of Safety Safety

    May 14, 2024 | Wesley L. Wheeler

    May is a busy month for safety. From mental health awareness to electrical safety, professionals across the board are busy addressing safety and training for employers and employees. From May 6–10, we celebrated Construction Safety Week and the OSHA National Safety Stand-Down to Prevent Falls in Construction. Test yourself below on a variety of safety issues. And to all safety professionals, thank you for all you do to protect our construction employees.

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  • Wire-Type EGC Sizing Requirements National Electrical Code

    Apr 15, 2024 | Michael Johnston

    The National Electrical Code contains minimum requirements, which means users must do at least that much. Sometimes the Code is modified to be more restrictive and specify larger sizes of wire-type equipment grounding conductors (EGCs) due to factors that require larger than table minimums. This is a case where the specific rules in Article 430 amend the general EGC sizing requirements in Article 250, and for good reason.

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  • 2023 NEC Fire Alarm Requirements Life Safety Systems

    Apr 15, 2024 | Thomas P. Hammerberg

    Test your knowledge of the fire alarm requirements in the 2023 National Electrical Code.

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  • Cabling Evolution for Ethernet Networks Cabling

    Mar 15, 2024 | Jim Hayes

    Structured cabling in building communications has been driven mainly by one network—ethernet—which has become the most widespread network standard. Ethernet turned 50 last year, making it an appropriate time to review how it was created and how it has driven the development of cabling.

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  • Emergency Management Response Safety

    Mar 15, 2024 | Wesley L. Wheeler

    Everyone should be familiar with emergency management systems and response. OSHA will be releasing new emergency management response regulations in the near future. How much do you know about this topic?

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  • How Should the NEC Be Applied? National Electrical Code

    Feb 15, 2024 | Michael Johnston
    Section 90.3 provides two key elements that help users with applying the National Electrical Code. This section provides the general arrangement, by chapter and chapter titles, and more importantly, indicates how the NEC should be applied to installations and systems. Chapters 1-4 provide the general application rules and 5-7 may modify or amend the general rules (often to be more restrictive and address specific situations, locations, conditions and equipment). 
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  • NFPA 72 Fire Alarm Requirements Life Safety Systems

    Feb 15, 2024 | Thomas P. Hammerberg
    This test of your general knowledge provides an opportunity to better understand requirements of NFPA 72-2022.
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  • Electric Vehicle Safety Safety

    Feb 15, 2024 | Wesley L. Wheeler
    With all the emphasis on electric vehicles and expanding infrastructure around green energy, let's consider some safety-related topics. It is important to understand the different types of EVs and EV charging equipment available, as well as installation considerations. 
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  • Planning for Disasters Cabling

    Jan 15, 2024 | Jim Hayes

    Natural disasters wreak havoc with communications networks because they can cause widespread damage to cable plants and communications systems. Restoration can be a time-consuming and expensive process. Can advance planning help mitigate the problems?

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