Can you use NM to feed power to a fire alarm in resdential homes? Reading Article 760 say BC must be in rmt,imc,emt. It talks physical protection of the branch circuit etc. If I run PVC up from the basement to the attic, can I run NM to my alarms through this conduit. Looking in" Analysis of Changes" book it say branch circuits must be installed in a metallic wiring method when in those ares requring AFIC protection. I think I just answer my question but what do you think?