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  1. Thread: 555.3

    by Smart $
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    23$$
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    Rather obvious, I'd say... ;)

    Rather obvious, I'd say... ;)
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    E2+: As Rob said, and... 2008 says... ...

    E2+: As Rob said, and...

    2008 says...


    2011/2014 changes it a bit and says...


    So it appears you may have been installing to Code after and before its time... :D
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    Article 355 requires RTRC and associated fittings...

    Article 355 requires RTRC and associated fittings to be listed (i.e. listed for use with each other :p).

    Doesn't say anything specific for [securing and] supporting means. Traditionally, securing...
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    In many cases with multiple sources, it is...

    In many cases with multiple sources, it is impossible to reduce current going through the grounding system to zero. At this point, probably best to see a diagram of grounded and grounding conductors...
  5. Thread: 555.3

    by Smart $
    Replies
    23$$
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    354

    I can see how you both see it... but it doesn't...

    I can see how you both see it... but it doesn't say that. Here's my own re-write of that section to state what you guys are seeing:
  6. Thread: 555.3

    by Smart $
    Replies
    23$$
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    I believe your interpretation is the intent......

    I believe your interpretation is the intent... but the words do not [completely] support that intent.
  7. Thread: 555.3

    by Smart $
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    I believe Don is correct.

    I believe Don is correct.
  8. You are correct... Code sort of implies it. ...

    You are correct... Code sort of implies it. However, it becomes more apparent if you include 210.19(A)(1) and 215.2(A)(1)...
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    Not forgetting... just not aware of any part of...

    Not forgetting... just not aware of any part of 422 that amends 430/440 in any pertinent manner. You?
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    Yet... And that is a very good...

    Yet...






    And that is a very good point. :happyyes:

    The 'rules' for no HP on the nameplate say you go by the nameplate current rating. In the case of a motor-operated appliance, that...
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    PS: See note to Table 430.22(E)

    PS: See note to Table 430.22(E)
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    Motors are excluded from 125% continuous load...

    Motors are excluded from 125% continuous load factoring, even if they are operated for over three hours continuously. All the "padding" is part of the requirements for motor circuits.

    The...
  13. Refer to 501.15(D) for Division 1, (E) for...

    Refer to 501.15(D) for Division 1, (E) for Division 2.
  14. Thread: Table 220.55

    by Smart $
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    1$$
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    While the term may be archaic, its use has/had a...

    While the term may be archaic, its use has/had a purpose... namely denoting the subject is that which immediately precedes it and to reduce repetition of the same descriptive text, especially when...
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    Typically yes... but we also have to be concerned...

    Typically yes... but we also have to be concerned with the atypical... because we just don't know.

    Let's say you have a service that's established as 200A because you have a 200A solar farm in the...
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    Yep. Well here's an argument that'll perhaps...

    Yep.


    Well here's an argument that'll perhaps sway some believers that the PV System disconnect is not a service disconnecting means. If it is, 250.24(C) requires the grounded conductor to be...
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    I realize you are aware of that for your...

    I realize you are aware of that for your particular installation. What I'm saying is the Code is written from the perspective of not knowing. What if the main bonding jumper at the service...
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    :slaphead:

    :slaphead:
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    ...and renders the objectionable current issue...

    ...and renders the objectionable current issue moot. :happyyes:
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    Still cannot make the distinction from here,...

    Still cannot make the distinction from here, without assumption. Is it a legally-required emergency system? If it is, you are likely in violation of 700.10(B).
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    The neutral to ground bond is mostly for the load...

    The neutral to ground bond is mostly for the load side. But without this bond, a line to ground fault in the disco has no direct return path to the source. The other indirect paths may not be...
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    That's what I'd expect to happen if the primary...

    That's what I'd expect to happen if the primary don't open.

    And hopefully the weakest point isn't immediate to the house. An added benefit to POCO running smaller conductors. ;)
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    I understand all that. Taking the view that you...

    I understand all that. Taking the view that you only need to bond one end of the EMT is not the only view. Some adhere to the rationale that bonding must be double ended with in- between equipment....
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    I understand. No matter what, you end up using...

    I understand. No matter what, you end up using one table or the other. Stands to reason both are based on potential fault current amount so they should darn near identical. I often wonder why...
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    I see where you're going with this, but I don't...

    [/QUOTE]
    I see where you're going with this, but I don't believe there is any requirement that the bonding jumper be connected directly to the grounded conductor in that enclosure. You could just...
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