Kingswillfall
New User
- Location
- Atlanta
- Occupation
- Superintendent
I have to provide “positive confirmation” according to NFPA92 sec 6.4.8.2. The presence of power for a dual zone smoke control system. VFDs are housed inside with local disconnects at the fans (outside). Power monitoring must be downstream of all circuit disconnects. This means load side of the last disco and the fan motor. My dilemma is that the system is only powered when commanded by Fire Alarm input to the VFDs. How do I show status without power downstream of the disco and still meet the requirement?