8.7.2.28 Emergency Operations and Signaling Devices
Where an alteration is made to car emergency signaling devices, the alteration shall conform to 2.27.1.
Where an alteration is made to an emergency or standby power system, the installation shall conform to 2.27.2.
Where an alteration is made to firefighters' emergency operation, the installation shall conform to 2.27.3 through 2.27.8.