While May is recognized as Electrical Safety Month, everyone should always practice safety when working with or around electrical circuits and equipment. Ensure proper ground prongs are in place and not removed from attachment plugs. Don’t swim around docks and marinas where electrical shock hazards could be present in the water. Test your safety know-how.
Unlike many communication networks that use a standard cable type, fiber optic networks are generally built with custom cables engineered for each installation. Ultimately, a manager must approve the cable plant design and sign the purchase order. They have to make a decision—is this the right cable? Well, is it?
OSHA’s Falls Safety Stand Down Week and Construction Safety Week programs featuring job-site safety talks, hazard identification and employee training programs help workers recognize safety issues and use the proper control methods. Test your knowledge here.
Grounding methods can vary and include solid grounding, impedance or resistance grounding, grounding through surge arresters and grounding through an inductor. The method is not always a matter of choice or a design consideration because, in many cases, it is required by the NEC.
Chapter 7, “Documentation,” was added in the 2013 edition of NFPA 72 National Fire Alarm and Signaling Code. New requirements were added and some of the information was relocated from other chapters. Without documentation, there is no proof that requirements were met. How well do you know the documentation requirements?
Proper material selection has never been more critical for electrical needs with power over ethernet installations increasing and fire alarm cabling protecting life and property. You also need to know how to install safely.
In my last quiz, I challenged your knowledge on fiber optic testing. Fiber optic test results are usually expressed in decibels (dB), a term that can be very confusing. Do you understand decibels, and do you know how to interpret test data expressed in decibels?
Ensuring proper selection, use and implementation of personal protective equipment (PPE) safeguards workers as a last line of defense—following elimination, substitution, engineering controls and administrative controls according to the hierarchy of risk control methods. How familiar are you with the details of PPE?
Do you think the requirements for inspecting and testing fire alarms and fire sprinklers are the same? Do you know the different requirements between NFPA 25 and NFPA 72?
National Electrical Code
Article 770 and Chapter 8 of the National Electrical Code apply to fiber optic cables and communications systems. Chapter 8 covers communications systems and is not subject to the requirements of Chapters 1 through 7, except where they are referenced in Chapter 8.