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  1. Rref

    ground fault and shunt trip devices in commercial kitchens

    If you are suppose to shunt trip any 125v devices underneath an exhaust hood, and all 125v, 15-20amp devices in the same kitchen shall be protected by ground fault devices (breakers or receptacles), Then what do you do when you have a device that falls under both of thos rules and requires shunt...
  2. Rref

    NFPA's unit shutdown code

    NFPA 72 (5.14) talks about the installation of duct mounted smoke detectors, and may I am just looking all over it and not seeing it, but I don't see the specific code referencing the automatic shut down of heating and air units. I am really looking for the code reference that mentions the size...
  3. Rref

    connecting new fire alarm system to existing system

    Are there any codes in NFPA or International Fire Codes that address the following? I am designing an electrical system for a 8500 square foot school addition. The existing and new building are being joined together via connecting corridor. I am planning to introduce a new fire alarm system to...

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