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Forum: Hazardous (Classified) Locations

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    04-01-07 07:17 PM Go to last post
  1. Cemented and Un-cemented joints ISA60079.0

    Hello, I have been looking for a clear definition of a cemented joint for a while and I cannot seem to find a simple paragraph explaining what it is...

    Started by SherryF on 05-14-13
    • Replies: 4
    • Views: 381
    05-16-13 06:07 PM Go to last post
  2. HAC for Jetty

    Hi, I'm an electrical engineering student working on a project to prepare the hazardous area classification for a jetty over the ocean which is...

    Started by Namdam on 05-16-13
    • Replies: 2
    • Views: 134
    05-16-13 09:48 AM Go to last post
  3. Type of conductor in Class 1 Division 2 Hazardous location?

    Is there a particular type of conductor that must be used in a Class 1 Division 2 hazardous location? Can I use THHN or XHHW? I'm looking at 2011...

    Started by ElectricNewEngland on 05-14-13
    class 1 div 2, conductor type, hazardous, thhn, xhhw
    • Replies: 1
    • Views: 126
    05-14-13 10:22 AM Go to last post
  4. Art 514 Sealoff Question

    I have encountered one of these "we always do it that way" situations. E/C has wired many stations, but has a situation which I think is a...

    Started by augie47 on 05-14-13
    • Replies: 2
    • Views: 141
    05-14-13 09:42 AM Go to last post
  5. Area Electrical Classification Training

    Is there anything in the code(s) that state you are required to have a certificate or be certified to determine an areas electrical classification?...

    Started by jc3l on 05-06-13
    • Replies: 3
    • Views: 380
    05-06-13 11:41 PM Go to last post
  6. Class 1 Div 1 data port

    Does a Class 1 Div 1 explosion proof cover exist for CAT5E port? generally i would install an exposion proof GUA fitting, leave about 10' of wire...

    Started by sparks1985 on 05-06-13
    • Replies: 1
    • Views: 211
    05-06-13 08:29 AM Go to last post
  7. Class 1 Division 1 Purged / Pressurized Enclosures in Series

    I have multiple enclosures in series with one purge unit in a class 1 division 1 area. My question is this, can I connect the enclosures to each...

    Started by prosys on 05-03-13
    • Replies: 5
    • Views: 343
    05-03-13 05:00 PM Go to last post
  8. Article 517 - Major Repair Areas

    NFPA 517 classifies any area or groups of areas with an opening like a doorway at slab in the repair bay as hazardous. NFPA 30A does not seem to...

    Started by MIKE CLAYPOOLE on 04-28-13
    • Replies: 1
    • Views: 334
    04-28-13 05:40 PM Go to last post
  9. Touchscreen HMI in a Class II Division 1 Group EFG Hazardous Location

    Working on a new piece of equipment that will go into a Class II Division 1 Group EFG Hazardous Location. The previous non-HL unit that this new one...

    Started by rekjr_mgs on 04-01-13
    • Replies: 7
    • Views: 1,091
    04-17-13 08:19 AM Go to last post
  10. Terminal Block in Non-Hazardous Enclosure Located in Class 1, Div 2 Location

    I was recently asked to finalize an electrical design at a power generation facility. The client wishes to have remote/emergency control of a...

    Started by msimms on 04-10-13
    • Replies: 4
    • Views: 613
    04-16-13 08:25 AM Go to last post
  11. Class 1 Div 1 Cables and Seals

    Hi, I'm new to this forum, but looking at some of the posts folks seem very knowledgeable here. I am overseeing the installation of a coating...

    Started by jstauffe on 04-04-13
    • Replies: 7
    • Views: 884
    04-13-13 09:50 AM Go to last post
  12. Class 2 Div1 Tray Cable

    I have run across an installation at a wheat grain elevator where Tray cable TC has been used for the Watch Dog Monitoring System wiring method. I...

    Started by PapaGreg on 04-10-13
    • Replies: 5
    • Views: 565
    04-11-13 09:27 AM Go to last post
  13. wire type egc

    I was looking for something the other day that I was unable to find. I seem to recall there is a requirement that an EGC of the wire type be run...

    Started by petersonra on 04-10-13
    • Replies: 4
    • Views: 448
    04-10-13 12:53 PM Go to last post
  14. Blind plugs in Explosion proof equipment

    Are there special requirement for blind plugs used to fill unused cable entries of explosion proof equipment, vs. the blind plugs used in threaded...

    Started by fvbekkum on 04-09-13
    • Replies: 1
    • Views: 418
    04-09-13 02:09 AM Go to last post
  15. Low Voltage Wiring Above Class 1 area

    I have a question that relates to installing security/voice/data/video in the area above a class 1 area. I my case its a major repair garage. Art...

    Started by itjag on 04-04-13
    • Replies: 3
    • Views: 445
    04-08-13 02:40 PM Go to last post
  16. Class 1 Division 2 seal of requirments as related to explosion proof enclosures

    I have a 30amp explosion proof disconnect (enclosure) for my class1 division 2 HVAC equipment. The HVAC equipment has a sealed off explosion proof...

    Started by Vance G on 03-28-13
    2 Pages
    1 2
    • Replies: 10
    • Views: 1,068
    04-06-13 12:30 AM Go to last post
  17. Diesel and Article 514

    Hello from the New Guy I am looking for some info on your NEC Article 514 Part of my project involves running a supply pipe from a Diesel fuel...

    Started by Handling on 04-04-13
    • Replies: 1
    • Views: 350
    04-04-13 03:20 PM Go to last post
  18. Enclosure for a Class 1; Divison 2 Environment

    Hi, I am looking for a way to house/enclose a wireless router in an environment that needs a Class 1, Division 2 rating. Assuming heat is not an...

    Started by pjm511 on 04-03-13
    • Replies: 4
    • Views: 529
    04-03-13 03:07 PM Go to last post
  19. 75KVA transformer on floor of class i div 2 garage

    I have been convinced that you can install a transformer (dry type) in a class 1 div 2 location but if you are coming out of a 480v panel into and...

    Started by lfloyd on 03-29-13
    • Replies: 6
    • Views: 684
    04-03-13 09:25 AM Go to last post
  20. conduits in interior walls within a class 1 div2 loccation.

    What actually defines the limits of a classified location? Are self closing casketed doors required to separate classified form nonclassified?...

    Started by lfloyd on 04-01-13
    • Replies: 1
    • Views: 419
    04-02-13 02:09 PM Go to last post

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