Strobe Panel tap ahead of main lugs of nearest 120/208V panel?

ReemDDC

Member
I have designed a partial fire alarm system consisting of smoke detectors, pull stations, horns and a strobe panel that will serve only 2 floors of a high rise building. This partial fire alarm system is connected to the building's main fire alarm system. On the drawings approved by FDNY, the power for the partial fire alarm system is tapped ahead of the main lugs of the nearest 120/208V panel. To my understanding, this is a common practice but I received letter of defect from FDNY specifying to "provide for power to be tied and fused in street side of electrical service prior to meter, transformer disconnect switch as per code". I was considering complying but that would require the contractor to run almost 300 ft run into a garage to achieve this. I am preparing to dispute the inspector's claim but I can not find in the code to support wiring connections for partial systems. Please help? Thank you
 

jumper

Senior Member
I found this for NYC:

760.41 Power Source Requirements. The power source for fire alarm circuits shall comply with the following:
(A) Primary Power Source. All fire alarm circuits shall be provided with a primary power source. The primary power source shall be generated electric power not exceeding 277/480 volts, supplied by utility company power or isolated plant. The primary power supply to the fire alarm system shall comply with the following:

(1) Primary power supply for the fire alarm system shall be connected to the primary power source ahead of all building service disconnecting means so that the building service disconnecting means can be opened without de-energizing the fire alarm supply. All utility metering of the fire alarm system, including disabling or removal of meters, shall maintain power continuity to the fire alarm system at all times.

(2) Primary power supply for sub-systems or other limited interior fire alarm systems may be connected to the power supply through the protected area of such systems by means of a connection ahead of the disconnecting means for the power supply to the protected area.

http://www.nyc.gov/html/dob/downloads/rules/1_RCNY_4000-06.pdf
 

ReemDDC

Member
I found this for NYC:

760.41 Power Source Requirements. The power source for fire alarm circuits shall comply with the following:
(A) Primary Power Source. All fire alarm circuits shall be provided with a primary power source. The primary power source shall be generated electric power not exceeding 277/480 volts, supplied by utility company power or isolated plant. The primary power supply to the fire alarm system shall comply with the following:

(1) Primary power supply for the fire alarm system shall be connected to the primary power source ahead of all building service disconnecting means so that the building service disconnecting means can be opened without de-energizing the fire alarm supply. All utility metering of the fire alarm system, including disabling or removal of meters, shall maintain power continuity to the fire alarm system at all times.

(2) Primary power supply for sub-systems or other limited interior fire alarm systems may be connected to the power supply through the protected area of such systems by means of a connection ahead of the disconnecting means for the power supply to the protected area.

http://www.nyc.gov/html/dob/downloads/rules/1_RCNY_4000-06.pdf
Thanks Jumper
 
Top