NAC stands for ___.

NAC stands for ___.

• A. nominal alternating current
• B. notification appliance circuit
• C. non-addressable class
• D. non-arcing conductor

Answer: (B)

NAC stands for Notification Appliance Circuit—the part of a fire alarm system that powers and signals the notification devices (horns, bells, strobes) so occupants are alerted. It is a dedicated, power-limited circuit designed specifically to supply the current needed for those devices. The other options don’t fit fire-alarm terminology: it isn’t a generic nominal alternating current, nor a term like non-addressable class, and it isn’t a safety term like non-arcing conductor.

NAC stands for Notification Appliance Circuit—the part of a fire alarm system that powers and signals the notification devices (horns, bells, strobes) so occupants are alerted. It is a dedicated, power-limited circuit designed specifically to supply the current needed for those devices. The other options don’t fit fire-alarm terminology: it isn’t a generic nominal alternating current, nor a term like non-addressable class, and it isn’t a safety term like non-arcing conductor.