Search:

Type: Posts; User: rbalex

Page 1 of 8 1 2 3 4

Search: Search took 0.05 seconds; generated 38 minute(s) ago.

  1. Replies
    23$$
    Views
    791

    Well at least they did a lot of your excavation...

    Well at least they did a lot of your excavation for you.;)
  2. Replies
    23$$
    Views
    791

    Unless and ​until the hazardous soil is broken...

    Unless and ​until the hazardous soil is broken into there is no EPA violation. I have one client who is so paranoid about this they will not put any thing underground unless the area is very tightly...
  3. Replies
    23$$
    Views
    791

    This is already an EPA violation. Where such soil...

    This is already an EPA violation. Where such soil is broken into and such conditions exist, the hazardous soil must be removed all the way until no such soil remains. The soil must be taken to a...
  4. Replies
    23$$
    Views
    791

    As I mentioned earlier in this thread, CMP 14 has...

    As I mentioned earlier in this thread, CMP 14 has very little influence on Articles 511 through 516. However, those are the only Articles where Electrical Area Classification can be determined from...
  5. Replies
    5$$
    Views
    341

    Actually, it isn't "debated intensely" by the...

    Actually, it isn't "debated intensely" by the technical committees for NFPA 497 or API RP 500. In fact, it's rarely even discussed. It does raise its head occasionally at the IEEE/PCIC conferences. ...
  6. Replies
    23$$
    Views
    791

    Normally, I would let Don continue on with this...

    Normally, I would let Don continue on with this discussion without further comment of my own. However, one of the common reasons given in general practice for leaving the underground unclassified is...
  7. Replies
    5$$
    Views
    341

    The truth is, I am rarely concerned about...

    The truth is, I am rarely concerned about Division 2/unclassified boundaries. Generally, where are sufficient gases and vapors coming from in Division 2 to worry about? CMP 14 isn't concerned too...
  8. Replies
    5$$
    Views
    341

    How are the boundaries documented? [Section...

    How are the boundaries documented? [Section 500.4(A)]
    How is below grade classified?
  9. Replies
    23$$
    Views
    791

    Three different Technical Committees (TCs) are...

    Three different Technical Committees (TCs) are involved with these two Articles: NEC CMP 14, the NFPA 30 TC (Art 515) and the NFPA 30A TC (Art 514). [See the Informational Notes after the titles of...
  10. Replies
    3$$
    Views
    373

    I'm only mildly concerned about the interlock...

    I'm only mildly concerned about the interlock switch. Check how it is specifically marked. Make sure it would comply with Section 501.115(B)

    Everything else indicates the luminaire itself complies...
  11. Replies
    3$$
    Views
    283

    Articles 514 and 515 do not apply to the...

    Articles 514 and 515 do not apply to the installation as you have described it. By the way, Article 515 is for bulk storage facilities, not spray applications.

    The FPN that you referred to...
  12. Thread: Article 501

    by rbalex
    Replies
    2$$
    Views
    239

    See Section 501.15(E)(1).

    See Section 501.15(E)(1).
  13. The "forms" are conduit bodies. See Section...

    The "forms" are conduit bodies. See Section 314.16(C)(2).
  14. The Form 5, 7 and 8s are fine in Division 2 for...

    The Form 5, 7 and 8s are fine in Division 2 for non-explosionproof applications. (I prefer 8s, but that is only design preference on my part)

    You have already established the enclosures aren't...
  15. Have you considered Section 501.10(B)(4) in light...

    Have you considered Section 501.10(B)(4) in light of 500.8(C)(6)(a)? Remember, equipment is very broadly defined in Article 100. BTW, identified​ is worth reviewing in Art 100 too.
  16. If you review Section 501.150(B)(1) carefully, it...

    If you review Section 501.150(B)(1) carefully, it doesn't say, "Are listed for Division 2". However, it cross references Section 501.105(B)(1) so it is effectively the same.

    I gather you're trying...
  17. Replies
    1$$
    Views
    185

    Article 504 does not relax the requirements for...

    Article 504 does not relax the requirements for grounding or bonding. See Sections 504.50 & 60.

    It's likely you are not permitted to "...just cut the green wire and cover with heat shrink" in the...
  18. No, but it would then need to comply with...

    No, but it would then need to comply with Sections 501.10(B)(1)&(2).

    Section 501.10(B)(3) is permissive, not required.
  19. Replies
    7$$
    Views
    413

    No. In fact, it's generally a bad idea to do...

    No. In fact, it's generally a bad idea to do anything more than required in section 500.8(E). While it isn't specifically prohibited, doping the threads with an acrylic can mess with both the...
  20. Thread: 250.122(F)

    by rbalex
    Replies
    30$$
    Views
    924

    I considered closing this thread since you have...

    I considered closing this thread since you have ignored the rules (you read them but didn't pay attention to them) for this particular forum. However, since at least four other moderators have...
  21. Replies
    3$$
    Views
    373

    I would be more concerned about recirculating air...

    I would be more concerned about recirculating air from the Division 1 location inside the booth.

    Since I'm not familiar with the booth's actual set up but assuming that the plenum is correctly...
  22. The Senior Engineer is correct. The NEC isn't the...

    The Senior Engineer is correct. The NEC isn't the best reference in this case. NFPA 497 details how to determine the volatility of fuels.
  23. Thread: OSHA rules

    by rbalex
    Replies
    4$$
    Views
    423

    See FedOSHA's policy on mult-employer worksites....

    See FedOSHA's policy on mult-employer worksites. It's been around a LONG time. State OSHA's have similar rules. Some are even more draconian.

    Edit Add: NFPA 70E also addresses the issue,...
  24. I'm surprised no one mentioned the fact that...

    I'm surprised no one mentioned the fact that utilities have a significantly different business/maintenance model than commercial or industrial facilities. Even for most small utilities, if the...
  25. Additional information: the "AEx" mark indicates...

    Additional information: the "AEx" mark indicates the luminaire is not IEC rated; it is a mark unique to the NEC.
Results 1 to 25 of 200
Page 1 of 8 1 2 3 4