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  1. G

    Ionization system to reduce OA requirements

    No response because their claims are bogus. Welcome back.
  2. G

    Can a Furnace Closet Serve as a Return Plenum? Here’s What the Code Actually Says

    The other item to note is to my knowledge, there is no condensing furnace made with a metal intake and exhaust.
  3. G

    Porch posts

    Use a Strong-Tie plinth that allows you to bolt to deck
  4. G

    Wood heated Spa

    You don't need to worry about the copper melting. If the boiler box gets to 1`984 degrees F they have worse problems to worry about
  5. G

    Auditorium allowable differences in Riser height

    Exception: The tolerance between adjacent treads shall not exceed 3/16 inch (4.8 mm) Shall not exceed
  6. G

    Return Air in Laundry Room

    A return air alone would cause a deeper negative pressure for both gas and electric. Make-up air for combustion would come from the make-up air provided to the room for the gas required by M614.6
  7. G

    Return Air in Laundry Room

    [M]614.6 make up air. I believe this is what was needed
  8. G

    Skylights and LED lighting

    Look under C 402.3.1
  9. G

    Return Air in Laundry Room

    I agree
  10. G

    Tap off of domestic water in place of jockey pump

    It is apparent by the size it is tapped into that it is a large building. I am only speculating what it is used for. Since it is tapped into the sprinkler and only a 3/4 inch line it is used to keep the system primed. Perhaps if you had taken the pic from the other side, we could have read the...
  11. G

    Tap off of domestic water in place of jockey pump

    I would say used to keep prime. It appears to be 3/4 inch copper line and at 52 psi with a velocity of 6 feet per second it would supply about 12 gallons per minute. Even though there is a double check valve installed, I would think it should have a reduced-pressure vacuum backflow preventer.
  12. G

    2024 NEC Change for AC Disconnects

    This would pertain to the actual "service disconnect"; the other would be the emergency shut-off switch in case the room was filled with smoke or other egregious issues preventing your access to the service switch that is required to be within reach of interior equipment. NEC 422.31a
  13. G

    2024 NEC Change for AC Disconnects

    The switch at the top of the stairs is not a disconnect with a door; it is not required to be serviced while energized, so there is no need to lock it. NFPA 31 10.5.1 covers the switch requirements, but is not universally required in IMC or IFGC etc.
  14. G

    When You Have To Crawl To The Disconnect

    NEC 110.26
  15. G

    AIC Ratings: The Most Overlooked Yet Critical Safety Check in Electrical Plan Review NEC 110.9

    Try a 480 contactor inside unit when you are soaking wet with sweat, and do not even touch the contactor. When it was all said and done, and I got my wits back, I was soaked with another type of liquid. Not fun
  16. G

    Condensate Traps — Why Manufacturer Instructions Matter

    Critical on rooftop units when the coil is on the negative side, the trap has to be designed to overcome the negative pressure of the blower or water will back up into ceiling ,ducts etc.
  17. G

    TikTok

    I have never been on either and will stay right here. I will pay double, and here is a thought: lifetime membership. $500
  18. G

    EGC Pass or Fail?

    110.12 Mechanical Execution of Work Failed
  19. G

    I Was Just Sent There To Troubleshoot

    NEC110.26a
  20. G

    Accessible Electrical Panel

    I can't remember every number on the fly, but you agree both 312.3 and 314.20 should be joined in verbiage yes.
  21. G

    EGC Pass or Fail?

    This looks like something from Ice's neighborhood!
  22. G

    Accessible Electrical Panel

    NEC 314.20 314.20 Flush-Mounted Installations. Installations within or behind a surface of concrete, tile, gypsum, plaster, or other noncombustible material, including boxes employing a flush-type cover or faceplate, shall be made so that the front edge of the box, plaster ring, extension ring...
  23. G

    13 Amps at the Ground Plate

    Do you know the answer, or are you looking for suggestions? Multiple scenarios can be the cause. I have several scenarios if needed.
  24. G

    Hub drain for three basin dish sink

    When you say "hub drain" are you referencing an open site drain? What size drain?
  25. G

    Connection to Bathroom Exhaust

    Yes that would be a mechanical connection
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