Question

Commercial fire alarm cables that run from floor to floor must be rated at least as _______. a. general-purpose cable b. water-resistant cable c. riser cable d. plenum cable

   Commercial fire alarm cables that run from floor to floor must be rated at least as _______.
a. general-purpose cable
b. water-resistant cable
c. riser cable
d. plenum cable

Electrical Trainee Guide, Level 4

Electrical Trainee Guide, Level 4

NCCER 9th Edition

Chapter 5, Problem 16

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The question is asking about the type of cable that is required for commercial fire alarm systems that run vertically between floors. Show more…

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Commercial fire alarm cables that run from floor to floor must be rated at least as _______. a. general-purpose cable b. water-resistant cable c. riser cable d. plenum cable

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Key Concepts

Cable Rating Systems

Cable rating systems classify wiring based on the environmental conditions in which they are installed and the necessary fire and smoke safety standards. This classification helps determine whether a cable must have general-purpose, water-resistant, riser, or plenum characteristics, ensuring that the cable performs safely under different installation scenarios.

Riser Cable

Riser cable is specifically designed for vertical runs in multi-story buildings, such as between floors. It is engineered to slow the spread of fire and smoke through riser shafts, and its use is mandated when cables traverse between floors to meet building code and safety requirements.

Fire Alarm System Wiring

Wiring for fire alarm systems must meet stringent safety standards to ensure functionality during emergencies. This includes selecting cable types that are rated appropriately for their installation environment, ensuring they can withstand potential fire hazards while maintaining system reliability.

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