Section 400.18701. Power supplies.  


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  • Section 3-1.1.1 of the standard is amended, section 3-2.3 of the standard is deleted, and section 3-5 is added to the standard, to read as follows:

    3-1.1.1. For electrically powered detectors, an AC primary power source shall be utilized in all new and existing construction.

    3-2.3. Deleted.

    3-5. A secondary source of power is required and it shall be of sufficient capacity to operate the system for 24 hours and thereafter  to sound alarm devices for not less than 4 minutes. A distinctive trouble signal shall be given before the secondary power supply   is   incapable   of operating the equipment for alarm purposes.

History: 1994 AACS.