Remote fire alarm battery question

MichaelGP3

Senior Member
Location
San Francisco bay area
Occupation
Fire Alarm Technician
Should a fire marshal stamped and approved drawing require the fire alarm batteries in an enclosure not in the same room as the FACP, is it a standard practice in the industry to furnish voltage drop calculations for the battery cables?
 

gadfly56

Senior Member
Location
New Jersey
Occupation
Professional Engineer, Fire & Life Safety
Should a fire marshal stamped and approved drawing require the fire alarm batteries in an enclosure not in the same room as the FACP, is it a standard practice in the industry to furnish voltage drop calculations for the battery cables?
I would say "no", but then that's because I've never heard of the backup batteries for a fire alarm control panel being in a different room. We are talking about 24 VDC, so depending on the distance, it might not be a bad idea.
 

MichaelGP3

Senior Member
Location
San Francisco bay area
Occupation
Fire Alarm Technician
I've seen this before but never thought about it. In the one I'm talking about the cabinets are 30' apart . A calculation did not appear in the voltage drop page of the drawings.
 
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