• GFCI requirement for water closet

    With regards to GFCI requirements NEC 210.8. Requirements for water closets are not addressed specifically. (definition: a water closet is a small enclosed area with a door that contains only a toilet. No sinks, tubs,...
    last modified by johnsonb.0671
  • Questions about 120v breakers. 

    I am an electrical novice.   In and industrial setting, is it required by NFPA 70/70E to lockout a 120v standard breaker (like a household breaker), where the breaker has not been designed to take a lock? Is a ...
    last modified by shaney
  • Conduit sealing for increased Safety Enclosure

    in our project, increased Safety (exe) enclosure are installed in class I, zone 2 . As per NPPA 70,  Inarticle 505.16 (C):class II, Zone 2 locations, seals shall be located in accordance with 505.16(C)(1) and (C)...
    last modified by huab2000
  • NFPA 110 7.2.2

    In regard to NFPA 110 paragraph 7.2.2. I have a hospital facility that has an open roof equipment yard that contains the EPS as well as an air cooled chiller and chilled water pumps. The EPS is located in its own encl...
    last modified by stella
  •   EPS outdoor

    According to NFPA 110 2016 edition & NFPA 99 2018 edition. Level 1 building.   I have an electrical room, indoor, 2hr FR separation from the rest of building. Normal service entrance more than 1000 amperes an...
    created by jrojas
  • Determine available arc fault value

    I am currently supporting development of a contractor electrical safety program w/ implementation of NFPA 70e. My question is regard determination of  Fault Current (Available) in order to satisfy the use of...
    last modified by tdotts
  • LED lighting in powder paint room

    In a Class II, Division II area inside a powder paint spray room( not a booth), will I need to put in dust tight LED lighting. Some of the SDS's on the powder paint mentions combustible dust but we do have a dust coll...
    last modified by sammyc
  • 2017 NEC 700.3(F) and Fire Pumps

    Do the requirements of the 2017 NEC article 700.3(F) apply to fire pumps?  Fire pumps are mentioned in the code commentary but are not referenced in any other part of article 700.  They are often served from...
    last modified by rbush
  • Why have I been banned?

    Can't post in electrical or industrial hazards forum.
    last modified by chiefns830
  • power from multiple sources

    Two industrial control panels, 480/60/3 are installed on a machine system. Each has a disconnect switch. One panel houses variable frequency drives, and the low-volt signal wiring for the drives is derived from the ot...
    last modified by wanda.earll
  • Readily Accessible... in a cabinet?

    Would a GFCI outlet in a cabinet be considered readily accessible?  Our local AHJ is saying no because homeowners will more than likely place items under the sink in front of the outlet.  We do not understan...
    last modified by lloyd.abentroth
  • Luminaires Grid Clips or Screws

    Hello,   My name is Shane Templeman, I recently became a member of the NFPA again. I have been a member before and need this answered. Please let me know if my reading of this article is accurate.   This i...
    last modified by flaggdies
  • Transformer Secondary Conductors

    NEC 240.21 (C) states that conductors are permitted to be connected to a transformer secondary without overcurrent protection at the secondary. It further states that 240.4(B) is not permitted.  240.4(B) is for n...
    last modified by j_w_hines
  • Chemical Store Protection

    I am going to design a flame detector in a chemical store so any one give me NFPA raferance.
    last modified by abrar.b
  • GFCI Below Sinks - why not?

    Anyone know why GFCIs are not required for equipment located below sinks such as in-sink waste disposers and trash compactors? I don't see a requirement in 210.8 and other sections such as 422.16(B)(1) and (2). Was cu...
    last modified by carl.mister
  • Electrical Safety Program Assistance Needed

    I need assistance from someone who specializes in electrical safety programs in a test lab environment where both technicians and engineers are working on and testing medium voltage equipment at an electrica...
    last modified by billjones12345
  • 70E Train the Trainer

    I'm new in this forum and probably this question was answered previously. Can someone recommend a class/company to train the trainer for NFPA 70E? does that person requires a certification?
    last modified by jesus.murguia
  • Working Space Requirements 110.26(C)(2)

    Hello,    We are a California Electrical Contractor and we installed a new 1200 amp switch gear section for a retail center. This was a upgrade of a existing 1000 amp switch gear section.    We a...
    last modified by corykruip
  • Does 406.12 apply to restaurant?

    Is it saying ALL the A-occupancies described in 518.2, or just the ones that are listed???   (Handbook is no help) thanks in advance.         406.12 Tamper-Resistant Receptacles. All 15- and...
    last modified by chiefns830
  • Light pole

    Hi There , I got fiber glass pole, in a parking lot , I need chance the regular light for LED, but someone said , I cant chance the all filter , just because the pole, anyone knows ,about the code , I got the NEC 2017...
    last modified by abarrantes