CFAA Fire Alarm Technician · Question
Which of the following cable types is inherently permitted for use in 2-hour fire-rated applications without additional protection?
Mineral Insulated (MI) cable is a specialized cable that is inherently 2-hour fire rated without being inside a rated shaft, used for critical fire alarm paths.
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Question: Which of the following cable types is inherently permitted for use in 2-hour fire-rated applications without additional protection?
Answer options: ✅ MI (Mineral Insulated) cable
- FAS 105 PVC cable
- BX cable (AC90)
- Cat6 plenum cable
Correct answer: MI (Mineral Insulated) cable
Explanation: Mineral Insulated (MI) cable is a specialized cable that is inherently 2-hour fire rated without being inside a rated shaft, used for critical fire alarm paths.
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Question explanations
- The primary power for a fire alarm system must be:
- If a 120VAC primary power circuit for a fire alarm control unit is consuming 60 Watts of power, what is the cu
- In a steady-state DC circuit, if the conductor length is doubled while maintaining voltage and wire gauge, wha
- A resistor is rated at 10 Watts at 24VDC. If the voltage drops to 20VDC, what is the new power dissipation?
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