The Standard for the Installation of Carbon Monoxide (CO) Detection and Warning Equipment is ____ ?

• A. NFPA 70
• B. NFPA 731
• C. NFPA 730
• D. NFPA 72

Answer: (B)

CO detectors rely on clear, well-planned installation guidelines so they can detect harmful leaks quickly and with minimal nuisance alarms. These guidelines cover where to place detectors (for example, in bedrooms and hallways, away from vents or humid areas), how high or low to mount them, what power sources and back‑ups to use, and how to test, maintain, and interconnect them with other alarms. The standard that specifically addresses these installation aspects for carbon monoxide detection and warning equipment is NFPA 731. NFPA 72, the fire alarm signaling code, deals with fire alarm systems in general; NFPA 70 is the electrical code; NFPA 730 is a different CO-related guide, not the installation standard for CO detectors.