• Fire & Alarm Inspectors Opportunities

    @Cennox is a nationwide corporation looking for a  Commercial Systems Inspector.   Part- Time in the Cleveland,OH; North Dayton, OH;  Full- Time in Richmond, VA;  Norfolk, VA; St. Louis, MO  &...
    last modified by michelle.dyer
  • NFPA 70B Applicatiions

    For NFPA 70B, 2010, can someone interpret for me what types of facilities this document covers? Particularly, I am investigating a fire that occurred in a small commercial establishment (4 stories with basement, maybe...
    last modified by sereemba
  • Evaporated Nitrogen gas is not a conductor of electricity.   How can I get this in the electrical code(s)?  Which ones?

    Greetings,     Here is what I'd like to achieve:     Evaporated Nitrogen gas is not a conductor of electricity.   (1) How can I get this in the electrical code(s)?  (2) Which o...
    last modified by denysedbq
  • NFPA Conference  - BFSS Section Meeting

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    created by lozmun
  • Re: [Electrical] - Re: Use of multipurpose socket outlets in a Hospital

    Thanks for your reply. Please find the attachment as you asked for it in your email.  These are the multupurpose sockets.Your reply will be highly appreciated.  Thanks and regardsMonis Ansari     ...
    last modified by 2917143
  • NFPA 99 ( )Clarification Required

    With refer to NFPA 99 Older versions Ref Wiring Requirements Separation from other circuits .The life safety branch and critical branch shall be kept independent of all other wiring...
    last modified by vijay.r1986
  • Hot Stick Use

    What is or is there a specific requirement to wear insulated gloves while using a hot stick to close a fuse on an overhead line or switch a transformer off or on since a hot stick is considered the primary protection.
  • Bonding Cable's

    I'm working on an incident in an aerosol manufacturing facility. The following question has nothing to do with the incident. However while doing a quick walk through from the incident area, I noticed a bonding/gr...
    created by jdugger
  • NEMA 3R Dry Type transformer installed in Class I Div 2 area

    What does the NEC say about installing a dry type transformer (480:208/120V) with a weather-proof enclosure in a Class I Div 2 area?  This is not an encapsulated transformer; just a general dry typ...
    last modified by rstuart
  • Work space requirements

    110.26.(A)(3) states "other equipment that is associated with the electrical installation and is located above or below the electrical equipment shall be permitted to extend no more than 6 in. beyond th...
    last modified by davis.mk
  • Fire Rated Cables

    Can fire rated cables used for fire alarm system be pulled in pvc conduits?  What is the restriction for the cable conduits.
    last modified by hijazihasan
  • NFPA70 Article 424 Fixed Electric Space Heating Equipment Question

    Under Article 424.38 Part B it states the uses which are not permitted. It states it cannot be installed over the top of walls where the wall intersects the ceiling and cannot be installed under or through walls. Now...
    last modified by ronanmcnicholas
  • Neutral position for single phase socket outlet

    Dear All, At my apartement project today was found some single phase socket outlet with different position for Neutral, please give me advice for it, if there any regulation about Neutral posisition for single phase ...
    last modified by yayatsumirat
  • Atlanta Interstate Collapses Due to Fire During Rush Hour Traffic

    Q: Is this much Hazardous Material being stored under a bridge really a good idea? Its a miracle that no one injured during this fire.    --------------------------------------------------------------------...
    last modified by nickdawe
  • NFPA 70E NEC question

    I work for a company that is going through a big growth phase.  In dealing with all this growth, we have had to rent additional HVAC equipment to handle the additional heat load of the plant.  Now my questio...
    last modified by robert.allen2
  • nfpa 70 (2014)

    my home was built in the 1950s and I have been told that to meet standards I will need to replace all my internal wiring with wire that has a ground wire. I need to go from a 2 phrase to a 3phrase wiring.  Where ...
    last modified by pearlseale
  • Arc Rated Goggles and 70E

    I can find nowhere in the 2015 NFPA 70E any information regarding use of AR goggles.  However one company out there is selling an AR goggle with the specification stating "Designed to meet the performance sp...
    last modified by george.cole
  • How often do battery packs for emergency lighting need to be replaced if the manufacture has no replacement recommendations?

    Does CMS require battery packs be replaced at any specific time frame ie every two years, three years ect?
    last modified by rasberry1953
  • Power Point Presentation of the 2017 NEC Code Changes

    jsargent Is it possible to obtain a copy of that nifty 2017 NEC changes power point presentation?
    last modified by grant.hightower
  • USB Powered Devices - SAFE?

    I am in a large office environment and I am seeing more and more devices that are powered by USB. The most common are fans, coffee cup warmers, and Christmas type lights. I know these are low voltage (I think 5 volts)...
    last modified by jason.mitera