Did you know you could direct bury fire alarm cables if codes and standards are followed?
Have you ever used direct burial cable in your fire alarm installations? Typically in fire alarm you will not see much of it as most of our outdoor work is typically in Rigid conduit or schedule 80 PVC. Also a small portion of our fire alarm designs involve running out side for connections. Without getting too deep in the design aspects, more than likely, if you are running circuits outside, are likely for a PIV (Post Indicator Valve), or Backflow Preventor with OS&Y switches (OS&Y standards for Outside Screw and Yoke)
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An easy way to notice the difference between standard non-metallic sheathed cable (NM) and underground feeder cable (UF) is the coating around each cable within the jacket. NM cable is simply a jacket to house multiple conductors whereas the UF cable separately coats each conductor.
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