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Re: Sprinklers in elevator Shafts



Thats the problem  The shunt trip breakers are unrelaible and have been know
to fail to trip and shut power off.
i have 2 such cases were they were used to shut down multiple power sources.
NEC no longer allows there use becuse of this but ANSI says to use them.
Either way after talking to AHJ he hasdetermined he does not want the
liabilty. and is using the option were car contrcution design allows
sprinkler head to be exempted.




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