Mixing Fire Systems from 2 different buildings?

[nietzj]

I have a situation with a tunnel connecting 2 separate buldings and would like to share the same raceway with 2 totally different fire alarm systems. I know this is not ideal but it would be nearly impossible to add a new conduit and open wiring is not an option. Is this a code violation?

 

[charlie b]

Duplicate. Closed. The discussion is here:

Mixing Fire Alarm Systems from 2 buildings?

I have a situation with a tunnel connecting 2 separate buldings and would like to share the same raceway with 2 totally different fire alarm systems. I know this is not ideal but it would be nearly impossible to add a new conduit and open wiring is not an option. Is this a code violation?

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