Fire Alarm Systems

[bfletcher]

I am doing a fire alarm renovation project and am confused about power-limited and nonpower-limited circuits. Can someone please explain the difference between the two to me? The new fire alarm system will be an addressable system.

 

[qcroanoke]

I am doing a fire alarm renovation project and am confused about power-limited and nonpower-limited circuits. Can someone please explain the difference between the two to me? The new fire alarm system will be an addressable system.

Try this for an explanation.


http://www.usfa.dhs.gov/downloads/pdf/coffee-break/cb-2007-12.pdf

 

[bfletcher]

Thanks, this is a good explaination of the two.