[Do Fire Alarm Circuits Need To Be Segregated From All Other Circuits]

Quote

— electromagnetic interference to any fire alarm circuit as a result of the proximity of another circuit; By following 7671 this is a non issue.

Scotmod. What part of 7671 are you quoting on this? 

 

Previously I have run mains cabling and fire alarm/ELV/data in the same tray but with a divider to separate them. This was agreed by everyone and signed off by the Clients consultant. 

 

in the NON-mains side, I was under the impression that the voltages in fire alarm, data and security (Power Over Ethernet - in our case) were so low that they would not cause any interference with each other. 

 

This has always been a grey area in 5839. I think a lot of older generations do not agree with running fire alarm and data together!