CompTIA
220-801 · Question #1187
220-801 Question #1187: Real Exam Question with Answer & Explanation
The correct answer is C: Plenum. Plenum-rated cables use special low-smoke, flame-retardant jacket materials designed to minimize toxic fumes when burned, making them required in air-handling spaces.
Question
Which of the following cable types should be installed to minimize toxic fumes in the event of a fire?
Options
- AFiber
- BSTP CAT6
- CPlenum
- DCoaxial
Explanation
Plenum-rated cables use special low-smoke, flame-retardant jacket materials designed to minimize toxic fumes when burned, making them required in air-handling spaces.
Common mistakes.
- A. Fiber optic cable does not carry electrical current and has reduced fire risk, but its jacket material is not specifically rated to minimize toxic fumes in the same standardized way as plenum cable.
- B. STP CAT6 refers to a shielding specification for reducing electromagnetic interference, not to the fire or smoke characteristics of the jacket material.
- D. Coaxial cable uses standard PVC or polyethylene jackets that can produce toxic fumes when burned and has no plenum-rated definition.
Concept tested. Plenum-rated cable fire safety requirements
Reference. https://www.nfpa.org/codes-and-standards/nfpa-70-standard-for-the-national-electrical-code
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