How many multi-station devices may be installed on a supervised loop?

The reason 64 is the correct answer regarding the number of multi-station devices that may be installed on a supervised loop lies in standard fire alarm system design specifications. A supervised loop, often referred to as a Class A or Class B circuit in the context of fire alarm systems, can typically accommodate up to 64 devices. This is due to the electrical characteristics and communication protocols that govern how devices communicate within the loop. Each device must be able to reliably send and receive signals, which is efficiently managed within this limitation.

Understanding the capacity of these devices is crucial for ensuring not just compliance with safety standards, but also the operational efficiency of the fire alarm system. Exceeding this number could lead to communication failures, making the system less reliable in an emergency scenario. Proper training on these specifications allows fire safety professionals to design and maintain systems that ensure maximum reliability and effectiveness in safeguarding lives and property.