Quizzes

Systems
By Thomas P. Hammerberg
This quiz is based on the requirements of NFPA 72, 2019 edition.
National Electrical Code
By Michael Johnston
Chapter 3 of the National Electrical Code provides rules related to wiring methods and materials, specifically the electrical wiring of branch circuits and feeders installed in premises wiring systems. Article 300 provides the general requirements while the other articles contain rules specifically related to wiring methods. How well do you know Chapter 3?
Safety
By Wesley L. Wheeler
Two recent emphasis programs that OSHA has initiated are Trench Safety and Fall Protection. These are enforcement strategies designed and implemented at the regional and area office levels. With the recent increase in excavation and fall incidents around the country, let’s review a few important requirements.
Cabling
By Jim Hayes
Data centers and wireless networks are two of the largest and fastest growing fiber optic applications. Both are rapidly evolving to meet customer needs. What’s your knowledge of today’s data centers? Answers are on page 103. To take the quiz electronically, visit ecmag.com.
National Electrical Code
By Michael Johnston
Some key general requirements in the National Electrical Code (NEC) address minimum working spaces around equipment, equipment markings and underground conduit installation depths. The authority having jurisdiction (AHJ) has significant interpretation and approval responsibilities. The NEC establishes minimum requirements.
Systems
By Thomas P. Hammerberg
One of the greatest challenges when installing a fire alarm is determining what you have to do when elevators are installed. Test your knowledge of the fire alarm requirements for elevators in NFPA 72 2019 edition.
Safety
By Wesley L. Wheeler
Next month, OSHA will be celebrating Safe + Sound Week, Aug. 12–18, 2019. There are many ways you can participate. Visit www.osha.gov/safeandsoundweek for more information and celebrate your safety successes and efforts at #SafeAndSoundAtWork.
Cabling
By Jim Hayes
Fiber optic connectors and connections can be the most important (and troublesome) part of a fiber optic cable plant. How well do you understand them?
National Electrical Code
By Michael Johnston
In my May Code Comments column, I wrote about the NEC and NFPA 70E definitions of a “qualified person.” Test your memory and your knowledge of this NEC term in the quiz below.
Systems
By Thomas P. Hammerberg
How well do you know the application, design and installation factors for audible fire alarm notification appliances? These are some details that should be known for a more effective fire alarm.