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  1. Replies
    27$$
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    1,177

    To support a fixture or device. Not sure they...

    To support a fixture or device. Not sure they make devices to fit in conduit bodies any longer, but they did at one time.
  2. Replies
    27$$
    Views
    1,177

    Take a look at the scope of the article and the...

    Take a look at the scope of the article and the support section.



    It is my opinion that the code very clearly covers the support of conduit bodies in this section.
  3. Replies
    29$$
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    1,505

    The following is part of one of the authors...

    The following is part of one of the authors comments.
  4. Replies
    29$$
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    1,505

    There is "comment" box at the top right of the...

    There is "comment" box at the top right of the article to click on. You do have to be registered and log in.
  5. Replies
    15$$
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    311

    I missed that. But then I don't even really...

    I missed that. But then I don't even really know what MC cable is:), you install more of that in a day than I did in my 40 years.
  6. Replies
    15$$
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    311

    It said "standard MC cable". I do not see that...

    It said "standard MC cable". I do not see that as MCAP. Standard 12-2 MC has an EGC of the wire type.
  7. Replies
    15$$
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    311

    It is clear to me that the design wanted a cable...

    It is clear to me that the design wanted a cable with an EGC of the wire type.

    Maybe it was just based on old specs from before the MCAP cable was on the market, but maybe the designer wanted...
  8. Thread: Gfci

    by don_resqcapt19
    Replies
    38$$
    Views
    1,738

    Is there any possibility of a RF source in the...

    Is there any possibility of a RF source in the area? Strong RF signals can trip GFCIs, but the newer ones have much more resistance to this than the older ones.
  9. Thread: Gfci

    by don_resqcapt19
    Replies
    38$$
    Views
    1,738

    The standard that requires the GFCIs to be self...

    The standard that requires the GFCIs to be self testing permits the device to lockout on a failed test or to provide and audible and/or visual alarm.
  10. No rule of thumb for control cables. The number...

    No rule of thumb for control cables. The number of conductors needed is based on the control scheme being used or the device that the control cable is connected to.
  11. First we need to understand exactly what system...

    First we need to understand exactly what system you have. A corner grounded system does not have a high leg. I just has one of the phases connected to earth and is a 3 wire system. A delta high...
  12. You are correct....I am a bit surprised that...

    You are correct....I am a bit surprised that after they added the exception to the roof top temperature derating for XHHW that there was not a move to show an ampacity higher that 90°C for derating...
  13. 110.26(E) only applies to specific equipment. I...

    110.26(E) only applies to specific equipment. I have never seen the rules of this section applied to flush mounted equipment. It is most often applied to surface mounted or free standing equipment....
  14. In my opinion, the deletion just puts us back to...

    In my opinion, the deletion just puts us back to where we were before the table was in the code. That is we just use the general ambient based on the weather records.

    None of the...
  15. Wiring methods in return air have to meet strict...

    Wiring methods in return air have to meet strict rules....open cables are required to be "plenum rated". If fire and smoke were the real issues, you would not just require the removal of abandoned...
  16. The disconnect says that A phase is grounded. ...

    The disconnect says that A phase is grounded. This is a corner grounded system. The conductor connected to A phase is a grounded conductor and the rules in Article 200 apply.
    To be sure that you...
  17. Any conductors connected to A phase in that panel...

    Any conductors connected to A phase in that panel are required to be identified as grounded conductors....white or gray.
  18. Not this makes more sense. The system requires a...

    Not this makes more sense. The system requires a neutral, so your only choice in panel 2, the 208Y/120 panel.
  19. Replies
    1$$
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    192

    I am not aware of rules in the NEC, but expect it...

    I am not aware of rules in the NEC, but expect it may be a 110.3(B) issue.
  20. Replies
    3$$
    Views
    243

    Often the capacity of the transformer is too...

    Often the capacity of the transformer is too small to power other devices. If there is enough space in the starter enclosure, you can often install a larger control power transformer.
  21. Replies
    8$$
    Views
    441

    While is is often common to see the top of the...

    While is is often common to see the top of the pole bases very close to flush with the surface where they are on sidewalks or behind the curb in the landscaping, and on bases 2-3' above grade in...
  22. In both fire spread and smoke production, the...

    In both fire spread and smoke production, the amount of plastic materials used as wiring methods is extremely small when you compare it to the building finishes and furnishings. In my opinion, small...
  23. Is the disconnect ahead of the meter the service...

    Is the disconnect ahead of the meter the service disconnect, or is it just a meter disconnect required by the power company?
  24. You need to wire a 24 volt DC power supply in...

    You need to wire a 24 volt DC power supply in series with the input card and the transmitter.
  25. The whole point of the temperature adder table...

    The whole point of the temperature adder table was to make an adjustment to the ambient, but you are correct it is an undefined term.
    While there was lots of evidence that the temperatures above...
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