Section 110.26 of the National Electrical Code (NEC) requires specific minimums for working space around electrical equipment. Section 110.26 is divided into six subsections, and some of them contain even more subsections.
Understanding the third article of the National Electrical Code (NEC), Article 110, Requirements for Electrical Installations, is essential to having a Code-compliant installation of the electrical system.
Addressable fire alarm systems are the typical choice for new installations. The programmability gives designers and installers an astounding array of operational features. However, occupants may not understand their responsibilities or how to interpret an alarm.
In the past year, fiber optics underwent some important developments, some technical and some market-related. For those of you working in fiber optic network design and installation, the changes present opportunities and challenges.
When the final camera, intrusion detection, or integrated solution is installed and the security system is commissioned, what comes next? Do you simply collect your final payment and move on to the next project?
Contractors and their customers are looking at the specification possibilities for long-range transmission-reading technologies as a standalone solution or piggybacked on proximity (hands-free) and smart card access control.
I am always amused when I hear, “No one uses heat-cured epoxy connectors anymore.” In fact, about 95 percent of all connectors, including every factory-made patchcord, uses heat-cured epoxy for its ease of use, low cost and high reliability.
Since fiber optics is growing in market share for all kinds of applications, I am hearing more stories about problems with installations. At The Fiber Optic Association, I handle most of the technical inquiries, so I tend to see the trends develop.
A contractor installed a new fire alarm system in a college dormitory and asked the owner, “How thoroughly do you want me to test the fire alarm system?” I was there to witness the system’s pre-acceptance test before we called the authority having jurisdiction (AHJ) to arrange for the final acceptan