jahilliard
Senior Member
So we were drilling through a solid block wall when we hit a conduit and shorted the wires. The elevators shut down and the FA panel went to flashing on all zones. It's an older simplex panel and all the expansion cards were flashing even the ones resistored out BUT there was never any audible alarms and one elevator just stopped in place. Turns out there is a 120V circuit that we have yet to identify running through the conduit along with the 24V FA circuits. This 120V has something to do with the elevators obviously but not sure exactly why or if it has anything to do with the FACP. We have completely shut down the FA panel due to the fact it will have to be repaired because of the surge. The bigger question is...if the 120V has nothing to do with FACP as far as we know, is it allowed in the conduit with the 24V zone wires or is the original installation incorrect. Something doesn't seem right and we are still searching but this should have been a fairly easy repair and it has turned into a fairly giant one. Also, we replaced a few fuses and the elevators are fine once we bypassed the FACP.