Which code permits the installation of Power Limited Fire Alarm Circuits with Class 1 conductors under specific circumstances where barriers are in place, or in hoistways?

Which code permits the installation of Power Limited Fire Alarm Circuits with Class 1 conductors under specific circumstances where barriers are in place, or in hoistways?

• A. NFPA 72
• B. National Electrical Code
• C. NFPA 101
• D. IEEE 802.3

Answer: (B)

The main concept is identifying which code governs the wiring rules for power-limited circuits using Class 1 conductors in special locations. The National Electrical Code covers these installation details, including the use of barriers to separate power-limited conductors and the allowance to run such circuits through hoistways under specific conditions. NFPA 72 governs how the fire alarm system operates, not where or how the wiring is routed. NFPA 101 deals with life safety requirements at a broader level, and IEEE 802.3 is about data networking, not fire alarm power circuits. So, the NEC is the code that permits this installation under those described circumstances.

The main concept is identifying which code governs the wiring rules for power-limited circuits using Class 1 conductors in special locations. The National Electrical Code covers these installation details, including the use of barriers to separate power-limited conductors and the allowance to run such circuits through hoistways under specific conditions. NFPA 72 governs how the fire alarm system operates, not where or how the wiring is routed. NFPA 101 deals with life safety requirements at a broader level, and IEEE 802.3 is about data networking, not fire alarm power circuits. So, the NEC is the code that permits this installation under those described circumstances.