Quizzes

Systems
By Thomas P. Hammerberg
Test your knowledge of NFPA 72 2016 secondary power requirements.
National Electrical Code
By Michael Johnston
Test your knowledge of the National Electrical Code (NEC).
Safety
By Wesley L. Wheeler
Mobile apps, online training and video conferencing have made managing safety and adhering to OSHA and NFPA requirements for safety documentation easier and more streamlined. What do you know about managing these safety requirements?
Cabling
By Jim Hayes
Multimode fiber has been around a long time and is still being used in many premises cabling applications. There also are continuous upgrades in multimode technology. How well have you kept up with multimode fiber technology and applications?
National Electrical Code
By Michael Johnston
These days, multiple power sources can be present in a single building or structure. Many of these are what the National Electrical Code (NEC) calls separately derived systems. Transformers, batteries, fuel cells and generators can supply these systems. An electrical system produced by a generator is either required to be grounded as a separately derived system or it is not, and the key to this is the transfer equipment.
Systems
By Thomas P. Hammerberg
Pathway survivability requirements are an often-misunderstood area of fire alarm systems. Test your knowledge of the requirements in NFPA 72, 2016 edition.
Safety
By Wesley L. Wheeler
This month, ELECTRICAL CONTRACTOR is profiling the electrical contractor, so let’s look at a few of the components in an electrical contractor’s safety program.
Cabling
By Jim Hayes
As they say, the devil is in the details. Knowing the little things that count can help get the job done, and save time and money. Let’s look at some little things that matter for fiber optics.
National Electrical Code
By Michael Johnston
Per the National Electrical Code (NEC), electrical equipment must be rated for voltage and ampacity, and it is required to carry normal current and the amount of available fault current during ground-fault or short-circuit conditions. Warnings also must be on equipment that is likely to need examination, adjustment, servicing or maintenance while energized.
Systems
By Thomas P. Hammerberg
Now that the 2015 edition of NFPA 4, Standard for Integrated Fire Protection and Life Safety System Testing, has been adopted in the 2018 codes, let’s see what you know about integrated systems testing requirements.