Quizzes

National Electrical Code
By Michael Johnston
Chapter 4 of the NEC, Equipment for General Use, includes the minimum requirements for equipment such as motors, transformers, appliances, heating equipment and more. According to Section 90.3, these rules are general in nature but could be amended by the specific requirements in chapters 5–7. Properly applying the NEC requires steady use and accurate navigation, so students of the Code are always learning.
Systems
By Thomas P. Hammerberg
How well do you know the requirements for duct smoke detectors? Requirements come from a number of different codes and standards. Take this quiz and test your knowledge.
Cabling
By Jim Hayes
Some safety issues are unique to working with fiber optics, while others are common to all aspects of cable installation. How well do you know the safety concerns for fiber optics?
Safety
By Wesley L. Wheeler
According to OSHA, falls are the leading cause of death in construction. During the first week of Electrical Safety Month, OSHA held its National Stand-Down to Prevent Falls. Test your fall-protection knowledge here.
National Electrical Code
By Michael Johnston
NEC Chapter 6, Special Equipment, covers photovoltaic systems, wind electrical systems, fuel cell systems, welders, IT equipment and more. As indicated in Section 90.3, the requirements in Chapter 6 can modify or amend the general rules in chapters 1–4, 5 and 7. Often the amendments or modifications are more restrictive than the general rules, but equal and effective safety requirements attained allow for the modifications by the later chapters.
Systems
By Thomas P. Hammerberg
How well do you know NFPA 72 requirements for fire alarm power supplies? Take this quiz and test your knowledge.
Safety
By Wesley L. Wheeler
What are the general voltage and current limitations on cables for electrical installations involving network cabling, low-voltage control systems, occupancy sensors and power over ethernet (PoE) cables? Refer to the National Electrical Code and other industry literature to perform a safe, efficient installation.
Cabling
By Jim Hayes
During the pandemic, many people worked and studied at home, all needing broadband internet to do so. Robust home internet is best achieved with fiber to the home (FTTH) using passive optical networks (PONs). How well do you understand FTTH using PONs?
National Electrical Code
By Michael Johnston
Chapter 6, Special Equipment, addresses equipment installations such as fire pumps, electric signs, elevators and electric vehicle supply equipment (EVSE). In addition to the electrical general installation rules, Chapter 6 requirements often modify general rules in a more restrictive fashion.
Systems
By Thomas P. Hammerberg
How well do you know the characteristics for application and selection of fire alarm notification appliances? Try this quiz and see how well you know them.