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Type: Posts; User: rbalex

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  1. Replies
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    The conductors themselves are probably OK, but...

    The conductors themselves are probably OK, but you will need to use threaded raceways in the Division 1 location [501.10(A)(1)(a)] and to observe boundary seal requirements [501.15(A)(4)].
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    Welcome to the forum. In addition to...

    Welcome to the forum.

    In addition to Golddigger's comments, see Article 516. Note, even some water based paints can have explosive properties in mist form. Flammability should be noted on the...
  3. I've only done it once, but if you get the base's...

    I've only done it once, but if you get the base's copy of the latest NAVFACs, you will find who the under SECNAV who is the "honest-to-god" AHJ for the entire Navy. Get his/her opinion. Again, if you...
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    It will depend on what the basis for classifying...

    It will depend on what the basis for classifying the room was in the first place. What was the standard used to determine the classification?
  5. This thread has been moved because it is not in...

    This thread has been moved because it is not in compliance with the rules of this particular forum. Your local AHJ may not be enforcing rules it has no jurisdiction over, but I try to here.
  6. Without actually seeing the cable and the seal...

    Without actually seeing the cable and the seal fitting, I can't tell too much.

    I can say that if the sealing compound was damaged your "third journeyman" is incorrect. If the cable is legal at...
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    See Section 511.7 as cross referenced by 514.7....

    See Section 511.7 as cross referenced by 514.7. Not applicable in this case, but there are added cautions for lighter than air fuels. [See Section/Table 514.3(B)(2)]
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    Using a properly installed flameproof [Ex d]...

    Using a properly installed flameproof [Ex d] gland would not usually require additional sealing in IEC Zone 1.

    While the US NEC defines certain Zone classifications and "AEx"-type protection...
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    The OP is basically right -and Art 514 recognizes...

    The OP is basically right -and Art 514 recognizes it - just not very well. [Section/Table 514.3(B)(2)] CNG, being lighter than air, has significantly different properties and often creates a...
  10. You may have heard that, but it isn't in the NEC....

    You may have heard that, but it isn't in the NEC. While it is a commonly cited in several CENELEC Euronorms (EN) it isn't in the basic IEC standards either. You can. Read up a bit here.
  11. Not necessarily. Remember, ignitable gases/vapors...

    Not necessarily. Remember, ignitable gases/vapors are not commonly present in Division 2.
  12. Theoretically, portable/transportable equipment...

    Theoretically, portable/transportable equipment is not covered by Articles 500 to 516 because they are not part of an "installation". See the definition of Electrical and Electronic Equipment in...
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    You might review the various nonincendive ...

    You might review the various nonincendive related definitions, especially nonincendive circuit in Section 500.2 and the ANSI/ISA reference document mentioned in the FPN/INs.
  14. Listed is a defined term in Article 100.

    Listed is a defined term in Article 100.
  15. Running threads aren't too much of another story....

    Running threads aren't too much of another story. They're already prohibited at couplings in Section 344.42(B); it doesn't need to be repeated in Chapter 5. Any "special" threading requirements for...
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    It is difficult to determine from the OP...

    It is difficult to determine from the OP description whether this installation is actually within the scope of Article 514. Technically, Section 514 would require a stub-up for the seal. It has to be...
  17. RMC may not be specifically marked for Class I...

    RMC may not be specifically marked for Class I but it must be listed as required by Section 344.6 and, if properly listed, is permitted in classified locations under Section 344.10(A)(1).
    A...
  18. What and where to bond is basically covered by...

    What and where to bond is basically covered by Article 250, possibly Section 515.16, and reviewing the external standards referenced in Section 500.4(B) especially FPN/IN No.3.

    How to bond is...
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    I apologize for overreacting.

    I apologize for overreacting.
  20. Thread: Class 1 div 2

    by rbalex
    Replies
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    206

    Donno; the OP's the one that asked. They may have...

    Donno; the OP's the one that asked. They may have contacts[(B)(1)], they almost certainly have resistors.[(B)(2)]. (B)(3)&(4) are irrelevant to the question.
  21. Thread: Class 1 div 2

    by rbalex
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    1.) Unless one of the Exceptions apply, devices...

    1.) Unless one of the Exceptions apply, devices covered by 501.150(B)(1) probably are. Although not likely, devices covered by 501.150(B)(2) may be.
    2.) Not automatically. Nonincendive is a...
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    It should be. The real question is the Division 1...

    It should be. The real question is the Division 1 envelope's hazard radius. Depending on the standard used as the basis it could be as much as 10' where the process pressure involved is 100 PSI.
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    If they were in the Class I, Division 1 envelopes...

    If they were in the Class I, Division 1 envelopes of the gasoline despenser, the installation was with respect to Section and Table 515.3. Using diesel at one dispenser doesn't erase the envelopes...
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    With regard to classified locations, I've never...

    With regard to classified locations, I've never ultimately had an AHJ overrule me.
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    As I said, you can draw your won conclusion; but,...

    As I said, you can draw your won conclusion; but, unless you're installing with respect to Section 514.3 classifications, you're needlessly wasting your client's money.
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