• OSHA - 70E Adoption

    Has OSHA adopted 70E as part the regulation? My understanding is that OSHA use 70E as their reference for enforcement. How to be safe.
    last modified by felixprbase
  • 480 Drop Connectors

    I have a question about adding quick disconnect plugs into a 480 drop. Right now we have cables going from the Bus Bar down to the equipment, Does it require a electrician to turn the bus bar off, cut it in half, add ...
    last modified by justin.trim
  • Plugging a UPS into another UPS or power conditioner

    Can anyone tell me if it is OK to plug a UPS into a Line Conditioner?  We have a fairly large piece of hospital lab equipment that a representative suggested we get a power conditioner to plug the UPS into. ...
    last modified by medina.gentry
  • Machine Frame grounding

    A machine section has a 480V motor driven roll. The motor is grounded per 430.242. Under 250.110, I say the machine frame itself needs to be grounded but the electrician says no, that’s a NFPA 79 thing. I say ma...
    last modified by kevin_wood
  • Energy Storage Systems

    Our data centre client is proposing to locate Lithium-ion batteries (energy storage system) into the server racks in the data centre halls. I have read the Fire Protection Research Foundation report from May 2019 rega...
    last modified by pcharman
  • Soow cable from ceiling

    Just need a second opinion I have a customer that has soow cord hanging from the ceiling connected to cnc machines if I am correct this is against code they have conduit running to the boxes and soow cord coming down ...
    last modified by erick.martinez
  • Good afternoon, I would like to know if there exists a code, law, or rule that indicates it is mandatory to do electrical safety inspections periodically, at buildings and homes in order to avoid home fires.Thanks in advance. Cordially, Loraine

    Good afternoon, I would like to know if there exists a code, law, or rule that indicates it is mandatory to do electrical safety inspections periodically, at existing buildings and homes in order to avoid home f...
    last modified by lorainejulio81
  • NFPA 72 Form for Mobile / Tablet

    3 votes
    Great resource here: https://docspace.io You can mobilize your NFPA 72 eform so the you can fill out the NFPA 72 form on your mobile phone or tablet. It even adds additional functionality to it. For exa...
    last modified by japagley
  • Dimensions of arc flash labels

    Hello,   The company I work for is looking to offer arc flash analyses and I've been the person selected to get everything started.  My question is regarding the labels themselves.  I've seen a lot of ...
    last modified by cmoe
  • Floor outlets on stages

    Hello Richard The type floor outlets I was speaking of were the thick Brass cover plate with the screw plugs that cover the outlet,when not in use, i was looking for a code that said that if not in use, it has to b...
    last modified by sowden
  • Amp reading access in a fire pump panel

    There is a local inspection company that has told several clients they need a new electrical fire pump panel because they would have to open it to get amp readings.  they are writing it up as a violation.  I...
    last modified by sgallagher4903
  • Electric outlets in the floor

    What are the rules for floor outlets on a stage in a elementary school?  Thanks John
    last modified by sowden
  • Relocatable Power Tap or Additional Outlet

    Hoping to hear some opinions about the dilemma.   Situation:  A home entertainment center, which now has an uninterruptible power supply.  The UPS is currently plugged into an outlet, definitely accept...
    last modified by sub3marathonman
  • Fountain that does not share pool water

    I have permanent decorative fountain in ground for aesthetic purpose that does not have water common to pool. I see that per Part V NEC 2014 Section 680.50, Part II which include equipotential bonding only applies if ...
    last modified by apurvadave
  • main lug sub-panel

    main lug subpanel  I was working on a 200 amp panel and I came across a sub-panel 8 space 8 circuit maxed out  that has an overcurrent protection 2 pole 30 amp with a 10/3wire  the 200 amp is maxed ou...
    last modified by homevisionin
  • Does a UPS (supporting computer and telemetry) in a patient care room but outside the patient care vicinity need UL 1363 approval?

    I am an electrician at a VA health care facility. I was recently tasked with doing a Relocatable Power Tap (RPT) audit of all of our patient care rooms. I understand that the area within 6 feet of where the patient re...
    last modified by thomas.crozier
  • Protective rubber glove protection

    Hello Gentlemen, I am an instructor here in Brazil, and in class, electricians always complain that they cannot use the insulating glove in conjunction with the leather glove to perform tasks that require greater &ldq...
    last modified by nelsoncanteri
  • What PPE is Required and used during a Zero Energy Verification

    As it pertains to NFPA 70E's requirement of placing a device, piece of equipment etc in a "Electrically Safe State", you turn off a breaker to a light switch or outlet. The next step is to verify via a meter that the ...
    last modified by carledge
  • NEC 2014 Section 250.64

    I have electrical service conductors going into trough.  From trough inside service cables their is connection tap three separate service  disco enclosures with fuses.   I have one grounding electrode ...
    last modified by apurvadave
  • Do I need to test exit signs which have a battery backup but are also on Emergency generator power?

    Healthcare facility
    last modified by michaeldepadova.chfm