🔔 NFPA 72 Notification NAC (24VDC End-of-Line Voltage Drop <16VDC, 14/12 AWG)

NFPA 72 Fire Alarm NAC Voltage Drop Calculator

Size commercial fire alarm Notification Appliance Circuits (NAC) under NFPA 72 Chapter 18: calculate cumulative lumped-sum and point-to-point voltage drop (ensuring operating voltage at the furthest strobe/horn never drops below 16.0VDC on a 20.4VDC battery cutoff baseline using 14 AWG or 12 AWG FPLP wire), and fire alarm contractor profits.

1. Project & Operating Inputs

Total Notification Appliances (Strobe / Horn Count e.g. 24 Appliances)

Total Circuit Run Length (Feet e.g. 450 ft to Furthest Strobe)

Customer Bid Price for Supplied & Wired Fire Alarm System ($)

Addressable FACP, Synchronized Power Boosters, FPLP Wire & Techs ($)

2. Financial Breakdown & Yield

NFPA 72 NOTIFICATION CIRCUITS

Turnkey Fire Alarm Package Profit

Life Safety Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost