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Type: Posts; User: jaggedben

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  1. Replies
    37$$
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    517

    Sorry, reading too fast, missed the 'current...

    Sorry, reading too fast, missed the 'current carrying' part. Thought it was one MWBC with EGC.



    Oh, I could still see a debate. :D
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    37$$
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    517

    Sounds like it is fed with a single branch...

    Sounds like it is fed with a single branch circuit, and you are running an equipment grounding conductor with the circuit. In that case, no grounding electrode is required according to the Exception...
  3. On a first read I see nothing wrong with your...

    On a first read I see nothing wrong with your plan. Nothing I would do differently, in fact.



    Nope.



    It needs to be #10 since you are upsizing your other conductors for voltage drop.
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    2$$
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    165

    Raceways are only required if the conductors are...

    Raceways are only required if the conductors are readily accessible. See 690.31(A) and 690.31(C)(1).

    Another section that could be applied is Article 338, for USE-2, which points to a section of...
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    28$$
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    553

    Just that since the 2011 code, 705.12(A) is where...

    Just that since the 2011 code, 705.12(A) is where we have the rule that you can connect power sources adding up to the rating of the service. And also that if this were taken out and you had only...
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    7$$
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    358

    Actually you can incorporate shade into the...

    Actually you can incorporate shade into the derate factor.
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    28$$
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    553

    In principle I have no objection to that, but I...

    In principle I have no objection to that, but I think some people who install systems under 230.82(5) would not want to be forgotten.

    There's another issue, as well, which is defining the ampacity...
  8. Replies
    28$$
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    553

    Calling it a service disconnect changes nothing,...

    Calling it a service disconnect changes nothing, because it fits under 230.40 Exception 5, which (unlike Exception 2!) is one of those sets of service conductors that is 'each' given its own...
  9. Thread: 725.136(I) ?

    by jaggedben
    Replies
    5$$
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    233

    How about Knob and Tube? Or lighting and power...

    How about Knob and Tube?

    Or lighting and power conductors improperly installed by others?

    An AHJ might not hold you responsible for fixing those, but hold you responsible for keeping your new...
  10. Replies
    28$$
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    553

    Two words, really. "From" and "to". What I...

    Two words, really. "From" and "to".

    What I would have submitted:



    Not that yours doesn't say the same thing.
  11. I cringe when I hear this sort of thing. Does NV...

    I cringe when I hear this sort of thing. Does NV Energy legally own the conductors all the way to the service disconnect? Or do NEC rules not apply in Nevada? :slaphead: Where is the service...
  12. Replies
    28$$
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    553

    Actually the definition of a service isn't...

    Actually the definition of a service isn't written that way. I came very close to submitting a revision to it before the closing date, but decided not to because, frankly, I think it keeps our...
  13. Replies
    28$$
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    553

    I think your forgetting that "just adding another...

    I think your forgetting that "just adding another set of service entrance conductors" isn't allowed without 230.82(6). That's the purpose of it, to allow it. See 230.40 and how Exception 5 refers...
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    4$$
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    257

    For AC circuits? If #6 or #8 is bigger than...

    For AC circuits? If #6 or #8 is bigger than required for the ampacity of the circuit, then yes.
  15. Why would a cutoff switch for the solar cut power...

    Why would a cutoff switch for the solar cut power from the grid?

    The term 'grid-tie passive' is not common and you should probably explain what exactly you mean by it. The one sensible example I...
  16. Yes, there are panels available that allow for...

    Yes, there are panels available that allow for multiple service disconnecting means.
    In order to offer actual suggestions we'd need to know if this is 3-phase or single phase, and probably also...
  17. Because the rules in 705.12 require the solar...

    Because the rules in 705.12 require the solar breaker to be on the opposite end in many situations.

    BTW, slight typo, I should have said 'opposite end from the main breaker or feed.'
  18. Replies
    3$$
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    278

    Some inverters can be or must be connected single...

    Some inverters can be or must be connected single phase with the neutral as a current carrying conductor. But with Sunny Tripower I believe the only purpose of the neutral is to sense voltage and...
  19. If it's one of those panels where the stabs at...

    If it's one of those panels where the stabs at the top are solid and the ones at the bottom are notched then it makes sense to install AFCIs and 2-poles over 50A at the top, since those will not get...
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    7$$
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    391

    A good inverter varies its input impedance to...

    A good inverter varies its input impedance to find the voltage for the best power output. It's called Maximum Power Point Tracking (MPPT), and the top companies are quite secretive about exactly...
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    10$$
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    538

    The 2011 code makes no distinction between...

    The 2011 code makes no distinction between subpanels containing only sources and those with loads. 705.12(D) governs all. If your AHJ wants to make you change that sub to a 150A to meet the 120%...
  22. Replies
    7$$
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    358

    Plumb on the end of the sign, if facing south,...

    Plumb on the end of the sign, if facing south, may be better than angled facing west.
  23. Replies
    7$$
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    391

    To be blunt... I suspect your inverter is junk....

    To be blunt...
    I suspect your inverter is junk.

    85% efficiency for a grid-tie inverter is horrid by today's standards and no reputable brand produces such a product. Is it UL listed? Even if...
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    4$$
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    257

    690.45 does not apply to AC circuits. PV source...

    690.45 does not apply to AC circuits. PV source and output circuits are pretty clearly defined in 690.1
  25. Replies
    52$$
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    2,087

    Unless it's a power limited source such as a...

    Unless it's a power limited source such as a string of PV modules.
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