By Thomas P. Hammerberg
Many new requirements have been added in the codes and standards for carbon monoxide (CO) detection in the last few years. Test your knowledge of CO gas and detection requirements.
National Electrical Code
By Michael Johnston
Article 100 of the National Electrical Code (NEC) contains definitions that are used in more than two articles of the Code. Several revisions in the 2017 version of the NEC include both new and revised definitions. Check your Code proficiency using defined terms. All answers are based on the 2017 NEC.
By Wesley L. Wheeler
Safety professionals need a vast knowledge of safety regulations and standards, an understanding of electrical industry work and the communication skills to train all levels of employees. Staying up to date is necessary to deliver the safety message and provide assistance to company employees.
We’re all familiar with the usual ways to install fiber—trenching and burying cable or placing cable on poles outdoors and placing cables in trays or conduit indoors. But there are many other ways to install fiber optic cable that are sometimes easier and more economical. How familiar are you with those techniques?
Outside plant fiber optic networks are getting faster. Upgrading older cable plants to higher speeds or testing new installations to ensure they can support future needs requires testing fibers more extensively—a process called fiber characterization. How well do you understand it?
A lot has changed in NFPA 72 regarding fire alarm systems monitoring in the last two code cycles. Here is a chance to review your knowledge of the changes.
When designing, building, testing or operating a fiber optic network, is “close enough” good enough?
A new type of local area network—passive optical local area networks (OLANs)—is becoming widely accepted because it costs less than half as much as traditional LANs. How much do you know about passive OLANs?