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  1. G

    Confused by CMC - “combined” exhaust system?

    1502.2 requires the air not to be recirculated. However, if a motorized damper were used as a backdraft check valve, one in each line, it would work. Not a very logical remedy
  2. G

    Calif. multifamily rec room warming kitchen - recirculating or no hood?

    Try 507 through 518 UMC
  3. G

    Commercial induction burner - hood needed?

    Whatever you heat on it could still catch fire. There are clas1 non vented hoods available for this purpose.
  4. G

    Calif. multifamily rec room warming kitchen - recirculating or no hood?

    Take a look at IMC 507.2.2 exceptions
  5. G

    Confused by CMC - “combined” exhaust system?

    Klarenbeek is on the right track: a mechanical exhaust system that delivers different types of gases and air. etc need to be independent of each other. Flue gas from a fossil fuel appliance can not be joined with exhaust from a dryer, bathroom, kitchen etc.
  6. G

    When Are Ground Rods Required at a Generator?

    OSHA 29 CFR1926.404[f][3]{I] [A] and B
  7. G

    When Are Ground Rods Required at a Generator?

    I know the answer to this, but I will wait for more stimulation on this subject since it is important and highly misunderstood.
  8. G

    What Amperage Are These Fuses

    All this time I thought I was the only one take the time to make the calculations. Great job. Looking at the age, this was pre-lead-free.
  9. G

    The NEC Now Requires Compliance with Maximum Voltage Drop

    Installation instructions are considered to be a part of the UL Listing.The UL Standards for Safety used to investigate products contain specific requirements regarding the content and appearance of the instructions. Installation instructions are not required to be marked with the UL Mark, but...
  10. G

    Replacing a Magnetically Locked Breaker (Mag-Loclk) with a Fused Disconnect - NEC 695

    I agree, I was making a point as to why an ATS would be involved.
  11. G

    The Building Department is Next on the Hit List - New Home Plumbing Problems

    Odor in the bathroom indicates poor venting and could also be part of the flushing issue.
  12. G

    Replacing a Magnetically Locked Breaker (Mag-Loclk) with a Fused Disconnect - NEC 695

    An automatic transfer switch would be for an"on-site power production Facility," correct, in case the main power from POCO is interrupted
  13. G

    Replacing a Magnetically Locked Breaker (Mag-Loclk) with a Fused Disconnect - NEC 695

    How many disconnects can you have for a fire pump motor? 1
  14. G

    Replacing a Magnetically Locked Breaker (Mag-Loclk) with a Fused Disconnect - NEC 695

    Not a requirement, but listed in NFPA 20 Annex A 10.2.1, recommended when located exterior of room for observation of pump.
  15. G

    Replacing a Magnetically Locked Breaker (Mag-Loclk) with a Fused Disconnect - NEC 695

    In the pump room, or visible through a window pane
  16. G

    What is 'Nominal' in Voltage

    Nominal voltage does not take into consideration a plus or minus 10%. Nominal is used for load design calculations. NEMA design criteria for motor design can use a plus or minus value for run performance.
  17. G

    Water line to toilet, can I T from sink?

    Correct or single line with T and a valve on two ports.
  18. G

    Water line to toilet, can I T from sink?

    I'm not clear about what you are asking about T after shut off. It can be done with a double-handed valve which meets individual cut-off requirements
  19. G

    IRC footing rebar requirements, Seismic Zone A

    I have used galvanized chain link fencing many times
  20. G

    What is 'Nominal' in Voltage

    NEC 220.5aNEC® section 220.5(A), unless other voltages are specified, for purposes of calculating branch-circuit and feeder loads, nominal system voltages of 120, 120/240, 208Y/120, 240, 347, 480Y/277, 480, 600Y/347, and 600 volts shall be used.
  21. G

    Why That Extra Ground Rod Might Be Making Things Worse

    Wow we agre again
  22. G

    Should Inspectors Remove Electrical Panel Covers?

    Contractors' responsibility is to open and close, in my opinion.
  23. G

    Radon Control Methods

    Correct whole-house ventilation would eliminate this issue and resolve many others simultaneously for less money. Unfortunately, scare tactics have been used to embellish this issue. I have seen companies that supposedly are industry experts charge exorbitant amounts of money to cut a hole in a...
  24. G

    Radon Control Methods

    I am not disputing that radon is not really real. If I install a mitigation system with barriers, a fan, etc., and radon from a shower on the second floor comes out of the solution, the system will not remove it as designed. It will dissipate with passive ventilation. 2021 to present has led to...
  25. G

    Radon Control Methods

    may, might, possibly,could have, etc. along with no certainties in code required mitigation to perform, is questionable at best. EPA's own documentation states that their findings are based upon uranium miners over forty who are exposed to high levels during an 8-hour shift. Taking a shower for...
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