Fire alarm NAC’s are not supposed to put out enough voltage to kill someone
I feel like that’s not right. I’m pretty sure that @KBM_Fire_andSecurity Got voltage and Current mixed up in that calculation.
For my calculations, I got this, (Math is probably wrong tho)
Lets say each alarm takes 0.1 Amps (That’s what my alarms get on average)
At 24 volts on a single circuit, it would need 85 Amps. (520/0.1) or 1248 Watts of power (Amps *24v)
Remember, I may be wrong as well. My knowledge of electronics combined with math is Very Limited.
I tried to use a voltage calculator for my guess
The Acme pull is likely from building 3 (Marriott Hotel) or building 6 (US Custom House).
The Cerberus Pyrotronics systems were only in buildings 1, 2, 4, and 5, as well as the retail concourse.
Yeah. Your probably right
Does anyone know what tones/messages are used in 1WTC today???
I know of a video that shows the current building’s alarms sounding, but I can’t seem to find it for some reason.
I’m also wondering what it sounds like
I don’t know if Firecom still uses the same tones that were used in WTC7 to this day (whoop and chime)
They probably don’t use those tones any more
Here’s another video of the same tone but a different building: Henry Nazar P.E. on Instagram: "Top of Staircase smoke relief hatch releasing upon activation of top of stairs smoke detector"
The one I’m thinking of but can’t seem to find has a close-up of one of the mall’s unique curved-plate speaker/strobes in the thumbnail.
Cool, sounded very different than I expected
Another video of wtc1: World Trade Center Alarm System - YouTube
That pull station needs a bit of restoration. But probably from WTC7? The FireCom 8500 system?
As I said, no: 7 WTC wouldn’t have had those kinds of pull stations since it had a Firecom system (in fact you can see the manual stations it would have most likely had some posts above). A few people guessed that that ACME pull came from another building at the WTC complex.
Like I said “ the WTC rubble was mixed up”
Then that must be a replacement then…
As has been said, it could have come from any of the buildings at the WTC complex, not just 7 WTC (which most likely didn’t have them anyway). Besides, that pull station is most likely way older than the 8500 system that was in 7 WTC going by the way it looks.