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.

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.

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?

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.

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.

Fiber optic communications has been around so long that we don’t think much about how it got started and developed into the powerful communications systems of today. Let’s test your knowledge of fiber optics history (and give you some trivia to impress your colleagues with).

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?

We’re always talking about how fast fiber optic networks are, but “fast” has several meanings. How well do you understand fast in fiber optics?

Understanding OSHA regulations is a constant challenge, and navigating OSHA requirements when dealing with a citation is critical to an investigation’s outcome. With penalties increasing in recent years, it is important to understand the monetary impact on an employer and how it can affect them if a second violation or citation is received. Managing safety is always important for the employer and employees. How much do you know about violations?

How well do you know the inspection and testing requirements for fire sprinklers connected to a fire alarm system? Take this quiz to find out.

Conductors and equipment covered by the NEC are acceptable only if the authority having jurisdiction (AHJ) approves them. Certified (listed) electrical products and equipment often serve as the AHJ’s basis for approval. A product must be listed where the NEC includes a requirement that equipment be listed. Are you familiar with other installation factors that the AHJ will verify in the approval process?

It’s important to remind ourselves about the basic principles and requirements for a safe workplace.

We’re bombarded by news of fiber optic networks—fiber to the home, 5G cellular backhaul, data centers and more. Managers involved with designing, installing and operating these networks need to be familiar with them. How well do you understand fiber optic networks?

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.